Fix regression: Unable to find explicit activity class

See https://github.com/TeamNewPipe/NewPipe/issues/3114#issuecomment-589940878 for info on this crash.
This reverts ef90493c27 partly.

README.md

@@ -13,7 +13,7 @@
 </p>
 <hr>
 <p align="center"><a href="#screenshots">Screenshots</a> &bull; <a href="#description">Description</a> &bull; <a href="#features">Features</a> &bull; <a href="#updates">Updates</a> &bull; <a href="#contribution">Contribution</a> &bull; <a href="#donate">Donate</a> &bull; <a href="#license">License</a></p>
-<p align="center"><a href="https://newpipe.schabi.org">Website</a> &bull; <a href="https://newpipe.schabi.org/blog/">Blog</a>  &bull; <a href="https://newpipe.schabi.org/press/">Press</a></p>
+<p align="center"><a href="https://newpipe.schabi.org">Website</a> &bull; <a href="https://newpipe.schabi.org/blog/">Blog</a> &bull; <a href="https://newpipe.schabi.org/FAQ/">FAQ</a> &bull; <a href="https://newpipe.schabi.org/press/">Press</a></p>
 <hr>
 
 <b>WARNING: THIS IS A BETA VERSION, THEREFORE YOU MAY ENCOUNTER BUGS. IF YOU DO, OPEN AN ISSUE VIA OUR GITHUB REPOSITORY.</b>

app/.gitignore

@@ -1,3 +1,3 @@
 .gitignore
 /build
-app.iml
+*.iml

app/build.gradle

@@ -11,8 +11,8 @@ android {
         applicationId "org.schabi.newpipe"
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 800
-        versionName "0.18.0"
+        versionCode 840
+        versionName "0.18.4"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -53,6 +53,7 @@ ext {
     okHttpLibVersion = '3.12.6'
     icepickLibVersion = '3.2.0'
     stethoLibVersion = '1.5.0'
+    markwonVersion = '4.2.1'
 }
 
 dependencies {
@@ -62,7 +63,7 @@ dependencies {
         exclude module: 'support-annotations'
     })
 
-    implementation 'com.github.TeamNewPipe:NewPipeExtractor:8e53fda'
+    implementation 'com.github.TeamNewPipe:NewPipeExtractor:v0.18.4'
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.mockito:mockito-core:2.23.0'
 
@@ -94,7 +95,7 @@ dependencies {
     implementation 'io.reactivex.rxjava2:rxjava:2.2.2'
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
     implementation 'com.jakewharton.rxbinding2:rxbinding:2.1.1'
-    implementation 'org.ocpsoft.prettytime:prettytime:4.0.1.Final'
+    implementation 'org.ocpsoft.prettytime:prettytime:4.0.3.Final'
 
     implementation "androidx.room:room-runtime:${roomDbLibVersion}"
     implementation "androidx.room:room-rxjava2:${roomDbLibVersion}"
@@ -108,4 +109,7 @@ dependencies {
 
     implementation "com.squareup.okhttp3:okhttp:${okHttpLibVersion}"
     debugImplementation "com.facebook.stetho:stetho-okhttp3:${stethoLibVersion}"
+
+    implementation "io.noties.markwon:core:${markwonVersion}"
+    implementation "io.noties.markwon:linkify:${markwonVersion}"
 }

app/src/main/AndroidManifest.xml

@@ -112,7 +112,7 @@
 
         <activity
             android:name=".ReCaptchaActivity"
-            android:label="@string/reCaptchaActivity"/>
+            android:label="@string/recaptcha"/>
 
         <provider
             android:name="androidx.core.content.FileProvider"
@@ -153,6 +153,7 @@
                 <!-- channel prefix -->
                 <data android:pathPrefix="/channel/"/>
                 <data android:pathPrefix="/user/"/>
+                <data android:pathPrefix="/c/"/>
                 <!-- playlist prefix -->
                 <data android:pathPrefix="/playlist"/>
             </intent-filter>

app/src/main/java/org/schabi/newpipe/App.java

@@ -99,7 +99,7 @@ public class App extends Application {
         NewPipe.init(getDownloader(),
                 Localization.getPreferredLocalization(this),
                 Localization.getPreferredContentCountry(this));
-        Localization.init();
+        Localization.init(getApplicationContext());
 
         StateSaver.init(this);
         initNotificationChannel();

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -31,7 +31,6 @@ import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
-import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.Window;
@@ -56,7 +55,6 @@ import androidx.fragment.app.FragmentManager;
 import com.google.android.material.navigation.NavigationView;
 
 import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.services.peertube.PeertubeInstance;
@@ -67,6 +65,7 @@ import org.schabi.newpipe.fragments.list.search.SearchFragment;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.KioskTranslator;
+import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PeertubeHelper;
 import org.schabi.newpipe.util.PermissionHelper;
@@ -78,6 +77,8 @@ import org.schabi.newpipe.util.ThemeHelper;
 import java.util.ArrayList;
 import java.util.List;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class MainActivity extends AppCompatActivity {
     private static final String TAG = "MainActivity";
     public static final boolean DEBUG = !BuildConfig.BUILD_TYPE.equals("release");
@@ -113,9 +114,9 @@ public class MainActivity extends AppCompatActivity {
         if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
             TLSSocketFactoryCompat.setAsDefault();
         }
-
         ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
 
+        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
@@ -419,6 +420,8 @@ public class MainActivity extends AppCompatActivity {
 
     @Override
     protected void onResume() {
+        assureCorrectAppLanguage(this);
+        Localization.init(getApplicationContext()); //change the date format to match the selected language on resume
         super.onResume();
 
         // close drawer on return, and don't show animation, so its looks like the drawer isn't open
@@ -449,6 +452,10 @@ public class MainActivity extends AppCompatActivity {
             sharedPreferences.edit().putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false).apply();
             NavigationHelper.openMainActivity(this);
         }
+
+        final boolean isHistoryEnabled = sharedPreferences.getBoolean(
+                getString(R.string.enable_watch_history_key), true);
+        drawerItems.getMenu().findItem(ITEM_ID_HISTORY).setVisible(isHistoryEnabled);
     }
 
     @Override
@@ -551,8 +558,6 @@ public class MainActivity extends AppCompatActivity {
         if (!(fragment instanceof SearchFragment)) {
             findViewById(R.id.toolbar).findViewById(R.id.toolbar_search_container).setVisibility(View.GONE);
 
-            MenuInflater inflater = getMenuInflater();
-            inflater.inflate(R.menu.main_menu, menu);
         }
 
         ActionBar actionBar = getSupportActionBar();
@@ -574,14 +579,6 @@ public class MainActivity extends AppCompatActivity {
             case android.R.id.home:
                 onHomeButtonPressed();
                 return true;
-            case R.id.action_show_downloads:
-                    return NavigationHelper.openDownloads(this);
-            case R.id.action_history:
-                    NavigationHelper.openStatisticFragment(getSupportFragmentManager());
-                    return true;
-            case R.id.action_settings:
-                    NavigationHelper.openSettings(this);
-                    return true;
             default:
                 return super.onOptionsItemSelected(item);
         }

app/src/main/java/org/schabi/newpipe/ReCaptchaActivity.java

@@ -1,20 +1,25 @@
 package org.schabi.newpipe;
 
-import android.app.Activity;
 import android.content.Intent;
-import android.graphics.Bitmap;
 import android.os.Build;
 import android.os.Bundle;
 import androidx.core.app.NavUtils;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
+
+import android.util.Log;
+import android.view.Menu;
 import android.view.MenuItem;
 import android.webkit.CookieManager;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
+import org.schabi.newpipe.util.ThemeHelper;
+
+import androidx.annotation.NonNull;
+
 /*
  * Created by beneth <bmauduit@beneth.fr> on 06.12.16.
  *
@@ -37,48 +42,46 @@ import android.webkit.WebViewClient;
 public class ReCaptchaActivity extends AppCompatActivity {
     public static final int RECAPTCHA_REQUEST = 10;
     public static final String RECAPTCHA_URL_EXTRA = "recaptcha_url_extra";
-
     public static final String TAG = ReCaptchaActivity.class.toString();
     public static final String YT_URL = "https://www.youtube.com";
 
-    private String url;
+    private WebView webView;
+    private String foundCookies = "";
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        ThemeHelper.setTheme(this);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_recaptcha);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
 
-        url = getIntent().getStringExtra(RECAPTCHA_URL_EXTRA);
+        String url = getIntent().getStringExtra(RECAPTCHA_URL_EXTRA);
         if (url == null || url.isEmpty()) {
             url = YT_URL;
         }
 
-
-        // Set return to Cancel by default
+        // set return to Cancel by default
         setResult(RESULT_CANCELED);
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
 
-        ActionBar actionBar = getSupportActionBar();
-        if (actionBar != null) {
-            actionBar.setDisplayHomeAsUpEnabled(true);
-            actionBar.setTitle(R.string.reCaptcha_title);
-            actionBar.setDisplayShowTitleEnabled(true);
-        }
+        webView = findViewById(R.id.reCaptchaWebView);
 
-        WebView myWebView = findViewById(R.id.reCaptchaWebView);
-
-        // Enable Javascript
-        WebSettings webSettings = myWebView.getSettings();
+        // enable Javascript
+        WebSettings webSettings = webView.getSettings();
         webSettings.setJavaScriptEnabled(true);
 
-        ReCaptchaWebViewClient webClient = new ReCaptchaWebViewClient(this);
-        myWebView.setWebViewClient(webClient);
+        webView.setWebViewClient(new WebViewClient() {
+            @Override
+            public void onPageFinished(WebView view, String url) {
+                super.onPageFinished(view, url);
+                handleCookies(url);
+            }
+        });
 
-        // Cleaning cache, history and cookies from webView
-        myWebView.clearCache(true);
-        myWebView.clearHistory();
+        // cleaning cache, history and cookies from webView
+        webView.clearCache(true);
+        webView.clearHistory();
         android.webkit.CookieManager cookieManager = CookieManager.getInstance();
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             cookieManager.removeAllCookies(aBoolean -> {});
@@ -86,77 +89,82 @@ public class ReCaptchaActivity extends AppCompatActivity {
             cookieManager.removeAllCookie();
         }
 
-        myWebView.loadUrl(url);
+        webView.loadUrl(url);
     }
 
-    private class ReCaptchaWebViewClient extends WebViewClient {
-        private final Activity context;
-        private String mCookies;
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_recaptcha, menu);
 
-        ReCaptchaWebViewClient(Activity ctx) {
-            context = ctx;
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(false);
+            actionBar.setTitle(R.string.title_activity_recaptcha);
+            actionBar.setSubtitle(R.string.subtitle_activity_recaptcha);
         }
 
-        @Override
-        public void onPageStarted(WebView view, String url, Bitmap favicon) {
-            // TODO: Start Loader
-            super.onPageStarted(view, url, favicon);
-        }
+        return true;
+    }
 
-        @Override
-        public void onPageFinished(WebView view, String url) {
-            String cookies = CookieManager.getInstance().getCookie(url);
-
-            // TODO: Stop Loader
-
-            // find cookies : s_gl & goojf and Add cookies to Downloader
-            if (find_access_cookies(cookies)) {
-                // Give cookies to Downloader class
-                DownloaderImpl.getInstance().setCookies(mCookies);
-
-                // Closing activity and return to parent
-                setResult(RESULT_OK);
-                finish();
-            }
-        }
-
-        private boolean find_access_cookies(String cookies) {
-            boolean ret = false;
-            String c_s_gl = "";
-            String c_goojf = "";
-
-            String[] parts = cookies.split("; ");
-            for (String part : parts) {
-                if (part.trim().startsWith("s_gl")) {
-                    c_s_gl = part.trim();
-                }
-                if (part.trim().startsWith("goojf")) {
-                    c_goojf = part.trim();
-                }
-            }
-            if (c_s_gl.length() > 0 && c_goojf.length() > 0) {
-                ret = true;
-                //mCookies = c_s_gl + "; " + c_goojf;
-                // Youtube seems to also need the other cookies:
-                mCookies = cookies;
-            }
-
-            return ret;
-        }
+    @Override
+    public void onBackPressed() {
+        saveCookiesAndFinish();
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
         switch (id) {
-            case android.R.id.home: {
-                Intent intent = new Intent(this, org.schabi.newpipe.MainActivity.class);
-                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-                NavUtils.navigateUpTo(this, intent);
+            case R.id.menu_item_done:
+                saveCookiesAndFinish();
                 return true;
-            }
             default:
                 return false;
         }
     }
+
+    private void saveCookiesAndFinish() {
+        handleCookies(webView.getUrl()); // try to get cookies of unclosed page
+        if (!foundCookies.isEmpty()) {
+            // give cookies to Downloader class
+            DownloaderImpl.getInstance().setCookies(foundCookies);
+            setResult(RESULT_OK);
+        }
+
+        Intent intent = new Intent(this, org.schabi.newpipe.MainActivity.class);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        NavUtils.navigateUpTo(this, intent);
+    }
+
+
+
+    private void handleCookies(String url) {
+        String cookies = CookieManager.getInstance().getCookie(url);
+        if (MainActivity.DEBUG) Log.d(TAG, "handleCookies: url=" + url + "; cookies=" + (cookies == null ? "null" : cookies));
+        if (cookies == null) return;
+
+        addYoutubeCookies(cookies);
+        // add other methods to extract cookies here
+    }
+
+    private void addYoutubeCookies(@NonNull String cookies) {
+        if (cookies.contains("s_gl=") || cookies.contains("goojf=") || cookies.contains("VISITOR_INFO1_LIVE=")) {
+            // youtube seems to also need the other cookies:
+            addCookie(cookies);
+        }
+    }
+
+    private void addCookie(String cookie) {
+        if (foundCookies.contains(cookie)) {
+            return;
+        }
+
+        if (foundCookies.isEmpty() || foundCookies.endsWith("; ")) {
+            foundCookies += cookie;
+        } else if (foundCookies.endsWith(";")) {
+            foundCookies += " " + cookie;
+        } else {
+            foundCookies += "; " + cookie;
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/about/AboutActivity.java

@@ -22,27 +22,30 @@ import android.widget.TextView;
 
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class AboutActivity extends AppCompatActivity {
 
     /**
      * List of all software components
      */
     private static final SoftwareComponent[] SOFTWARE_COMPONENTS = new SoftwareComponent[]{
-            new SoftwareComponent("Giga Get", "2014", "Peter Cai", "https://github.com/PaperAirplane-Dev-Team/GigaGet", StandardLicenses.GPL2),
-            new SoftwareComponent("NewPipe Extractor", "2017", "Christian Schabesberger", "https://github.com/TeamNewPipe/NewPipeExtractor", StandardLicenses.GPL3),
+            new SoftwareComponent("Giga Get", "2014 - 2015", "Peter Cai", "https://github.com/PaperAirplane-Dev-Team/GigaGet", StandardLicenses.GPL2),
+            new SoftwareComponent("NewPipe Extractor", "2017 - 2020", "Christian Schabesberger", "https://github.com/TeamNewPipe/NewPipeExtractor", StandardLicenses.GPL3),
             new SoftwareComponent("Jsoup", "2017", "Jonathan Hedley", "https://github.com/jhy/jsoup", StandardLicenses.MIT),
             new SoftwareComponent("Rhino", "2015", "Mozilla", "https://www.mozilla.org/rhino/", StandardLicenses.MPL2),
             new SoftwareComponent("ACRA", "2013", "Kevin Gaudin", "http://www.acra.ch", StandardLicenses.APACHE2),
             new SoftwareComponent("Universal Image Loader", "2011 - 2015", "Sergey Tarasevich", "https://github.com/nostra13/Android-Universal-Image-Loader", StandardLicenses.APACHE2),
-            new SoftwareComponent("CircleImageView", "2014 - 2017", "Henning Dodenhof", "https://github.com/hdodenhof/CircleImageView", StandardLicenses.APACHE2),
+            new SoftwareComponent("CircleImageView", "2014 - 2020", "Henning Dodenhof", "https://github.com/hdodenhof/CircleImageView", StandardLicenses.APACHE2),
             new SoftwareComponent("NoNonsense-FilePicker", "2016", "Jonas Kalderstam", "https://github.com/spacecowboy/NoNonsense-FilePicker", StandardLicenses.MPL2),
-            new SoftwareComponent("ExoPlayer", "2014-2017", "Google Inc", "https://github.com/google/ExoPlayer", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxAndroid", "2015", "The RxAndroid authors", "https://github.com/ReactiveX/RxAndroid", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxJava", "2016-present", "RxJava Contributors", "https://github.com/ReactiveX/RxJava", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxBinding", "2015", "Jake Wharton", "https://github.com/JakeWharton/RxBinding", StandardLicenses.APACHE2)
+            new SoftwareComponent("ExoPlayer", "2014 - 2020", "Google Inc", "https://github.com/google/ExoPlayer", StandardLicenses.APACHE2),
+            new SoftwareComponent("RxAndroid", "2015 - 2018", "The RxAndroid authors", "https://github.com/ReactiveX/RxAndroid", StandardLicenses.APACHE2),
+            new SoftwareComponent("RxJava", "2016 - 2020", "RxJava Contributors", "https://github.com/ReactiveX/RxJava", StandardLicenses.APACHE2),
+            new SoftwareComponent("RxBinding", "2015 - 2018", "Jake Wharton", "https://github.com/JakeWharton/RxBinding", StandardLicenses.APACHE2),
+            new SoftwareComponent("PrettyTime", "2012 - 2020", "Lincoln Baxter, III", "https://github.com/ocpsoft/prettytime", StandardLicenses.APACHE2),
+            new SoftwareComponent("Markwon", "2017 - 2020", "Noties", "https://github.com/noties/Markwon", StandardLicenses.APACHE2)
     };
 
     /**
@@ -62,8 +65,10 @@ public class AboutActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         ThemeHelper.setTheme(this);
+        this.setTitle(getString(R.string.title_activity_about));
 
         setContentView(R.layout.activity_about);
 
@@ -83,13 +88,6 @@ public class AboutActivity extends AppCompatActivity {
     }
 
 
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        // Inflate the menu; this adds items to the action bar if it is present.
-        getMenuInflater().inflate(R.menu.menu_about, menu);
-        return true;
-    }
-
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
 
@@ -99,11 +97,6 @@ public class AboutActivity extends AppCompatActivity {
             case android.R.id.home:
                 finish();
                 return true;
-            case R.id.action_settings:
-                NavigationHelper.openSettings(this);
-                return true;
-            case R.id.action_show_downloads:
-                return NavigationHelper.openDownloads(this);
         }
 
         return super.onOptionsItemSelected(item);

app/src/main/java/org/schabi/newpipe/about/LicenseFragmentHelper.java

@@ -3,6 +3,7 @@ package org.schabi.newpipe.about;
 import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
+import android.content.res.Resources;
 import android.os.AsyncTask;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
@@ -14,6 +15,8 @@ import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.lang.ref.WeakReference;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
 
     final WeakReference<Activity> weakReference;
@@ -55,15 +58,15 @@ public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
         wv.loadData(webViewData, "text/html; charset=UTF-8", null);
 
         alert.setView(wv);
-        alert.setNegativeButton(android.R.string.ok, new DialogInterface.OnClickListener() {
-            @Override
-            public void onClick(DialogInterface dialog, int which) {
-                dialog.dismiss();
-            }
-        });
+        assureCorrectAppLanguage(activity.getApplicationContext());
+        alert.setNegativeButton(getFinishString(activity), (dialog, which) -> dialog.dismiss());
         alert.show();
     }
 
+    private static String getFinishString(Activity activity) {
+        return activity.getApplicationContext().getResources().getString(R.string.finish);
+    }
+
     /**
      * @param context the context to use
      * @param license the license

app/src/main/java/org/schabi/newpipe/download/DownloadActivity.java

@@ -12,12 +12,14 @@ import android.view.MenuItem;
 import android.view.ViewTreeObserver;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.settings.SettingsActivity;
+import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.ui.fragment.MissionsFragment;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class DownloadActivity extends AppCompatActivity {
 
     private static final String MISSIONS_FRAGMENT_TAG = "fragment_tag";
@@ -29,6 +31,7 @@ public class DownloadActivity extends AppCompatActivity {
         i.setClass(this, DownloadManagerService.class);
         startService(i);
 
+        assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_downloader);
@@ -74,15 +77,9 @@ public class DownloadActivity extends AppCompatActivity {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
-            case android.R.id.home: {
+            case android.R.id.home:
                 onBackPressed();
                 return true;
-            }
-            case R.id.action_settings: {
-                Intent intent = new Intent(this, SettingsActivity.class);
-                startActivity(intent);
-                return true;
-            }
             default:
                 return super.onOptionsItemSelected(item);
         }

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -11,15 +11,6 @@ import android.os.Bundle;
 import android.os.Environment;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
-import androidx.annotation.IdRes;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.StringRes;
-import androidx.fragment.app.DialogFragment;
-import androidx.documentfile.provider.DocumentFile;
-import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.view.menu.ActionMenuItemView;
-import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.util.SparseArray;
 import android.view.LayoutInflater;
@@ -34,10 +25,21 @@ import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.annotation.IdRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.view.menu.ActionMenuItemView;
+import androidx.appcompat.widget.Toolbar;
+import androidx.documentfile.provider.DocumentFile;
+import androidx.fragment.app.DialogFragment;
+
 import com.nononsenseapps.filepicker.Utils;
 
 import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.RouterActivity;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.localization.Localization;
@@ -77,6 +79,8 @@ import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.service.DownloadManagerService.DownloadManagerBinder;
 import us.shandian.giga.service.MissionState;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheckedChangeListener, AdapterView.OnItemSelectedListener {
     private static final String TAG = "DialogFragment";
     private static final boolean DEBUG = MainActivity.DEBUG;
@@ -368,6 +372,9 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
         toolbar.setOnMenuItemClickListener(item -> {
             if (item.getItemId() == R.id.okay) {
                 prepareSelectedDownload();
+                if (getActivity() instanceof RouterActivity) {
+                    getActivity().finish();
+                }
                 return true;
             }
             return false;
@@ -523,10 +530,11 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
     }
 
     private void showFailedDialog(@StringRes int msg) {
+        assureCorrectAppLanguage(getContext());
         new AlertDialog.Builder(context)
                 .setTitle(R.string.general_error)
                 .setMessage(msg)
-                .setNegativeButton(android.R.string.ok, null)
+                .setNegativeButton(getString(R.string.finish), null)
                 .create()
                 .show();
     }
@@ -555,8 +563,16 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
             case R.id.audio_button:
                 mainStorage = mainStorageAudio;
                 format = audioStreamsAdapter.getItem(selectedAudioIndex).getFormat();
-                mime = format.mimeType;
-                filename += format.suffix;
+                switch(format) {
+                    case WEBMA_OPUS:
+                        mime = "audio/ogg";
+                        filename += "opus";
+                        break;
+                    default:
+                        mime = format.mimeType;
+                        filename += format.suffix;
+                        break;
+                }
                 break;
             case R.id.video_button:
                 mainStorage = mainStorageVideo;
@@ -820,7 +836,6 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
                     psArgs = new String[]{
                             selectedStream.getFormat().getSuffix(),
                             "false",// ignore empty frames
-                            "false",// detect youtube duplicate lines
                     };
                 }
                 break;

app/src/main/java/org/schabi/newpipe/fragments/MainFragment.java

@@ -30,6 +30,7 @@ import org.schabi.newpipe.settings.tabs.Tab;
 import org.schabi.newpipe.settings.tabs.TabsManager;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ServiceHelper;
+import org.schabi.newpipe.views.ScrollableTabLayout;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -37,7 +38,7 @@ import java.util.List;
 public class MainFragment extends BaseFragment implements TabLayout.OnTabSelectedListener {
     private ViewPager viewPager;
     private SelectedTabsPagerAdapter pagerAdapter;
-    private TabLayout tabLayout;
+    private ScrollableTabLayout tabLayout;
 
     private List<Tab> tabsList = new ArrayList<>();
     private TabsManager tabsManager;

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.fragments.detail;
 
 import android.app.Activity;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.net.Uri;
@@ -18,7 +17,6 @@ import androidx.fragment.app.Fragment;
 import androidx.core.content.ContextCompat;
 import androidx.viewpager.widget.ViewPager;
 import androidx.appcompat.app.ActionBar;
-import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import android.text.Html;
 import android.text.Spanned;
@@ -58,6 +56,7 @@ import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.services.youtube.extractors.YoutubeStreamExtractor;
 import org.schabi.newpipe.extractor.stream.AudioStream;
+import org.schabi.newpipe.extractor.stream.Description;
 import org.schabi.newpipe.extractor.stream.Stream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.StreamType;
@@ -79,6 +78,7 @@ import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.ImageDisplayConstants;
 import org.schabi.newpipe.util.InfoCache;
+import org.schabi.newpipe.util.KoreUtil;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
@@ -95,6 +95,8 @@ import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 import icepick.State;
+import io.noties.markwon.Markwon;
+import io.noties.markwon.linkify.LinkifyPlugin;
 import io.reactivex.Single;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
@@ -482,7 +484,6 @@ public class VideoDetailFragment
         videoUploadDateView = rootView.findViewById(R.id.detail_upload_date_view);
         videoDescriptionView = rootView.findViewById(R.id.detail_description_view);
         videoDescriptionView.setMovementMethod(LinkMovementMethod.getInstance());
-        videoDescriptionView.setAutoLinkMask(Linkify.WEB_URLS);
 
         thumbsUpTextView = rootView.findViewById(R.id.detail_thumbs_up_count_view);
         thumbsUpImageView = rootView.findViewById(R.id.detail_thumbs_up_img_view);
@@ -599,22 +600,27 @@ public class VideoDetailFragment
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        if (isLoading.get()) {
-            // if is still loading block menu
+        int id = item.getItemId();
+        if (id == R.id.action_settings) {
+            NavigationHelper.openSettings(requireContext());
+            return true;
+        }
+
+        if (isLoading.get()) {
+            // if still loading, block menu buttons related to video info
             return true;
         }
 
-        int id = item.getItemId();
         switch (id) {
             case R.id.menu_item_share: {
                 if (currentInfo != null) {
-                    ShareUtils.shareUrl(this.getContext(), currentInfo.getName(), currentInfo.getOriginalUrl());
+                    ShareUtils.shareUrl(requireContext(), currentInfo.getName(), currentInfo.getOriginalUrl());
                 }
                 return true;
             }
             case R.id.menu_item_openInBrowser: {
                 if (currentInfo != null) {
-                    ShareUtils.openUrlInBrowser(this.getContext(), currentInfo.getOriginalUrl());
+                    ShareUtils.openUrlInBrowser(requireContext(), currentInfo.getOriginalUrl());
                 }
                 return true;
             }
@@ -624,7 +630,7 @@ public class VideoDetailFragment
                             url.replace("https", "http")));
                 } catch (Exception e) {
                     if (DEBUG) Log.i(TAG, "Failed to start kore", e);
-                    showInstallKoreDialog(activity);
+                    KoreUtil.showInstallKoreDialog(activity);
                 }
                 return true;
             default:
@@ -632,16 +638,6 @@ public class VideoDetailFragment
         }
     }
 
-    private static void showInstallKoreDialog(final Context context) {
-        final AlertDialog.Builder builder = new AlertDialog.Builder(context);
-        builder.setMessage(R.string.kore_not_found)
-                .setPositiveButton(R.string.install, (DialogInterface dialog, int which) ->
-                        NavigationHelper.installKore(context))
-                .setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
-                });
-        builder.create().show();
-    }
-
     private void setupActionBarOnError(final String url) {
         if (DEBUG) Log.d(TAG, "setupActionBarHandlerOnError() called with: url = [" + url + "]");
         Log.e("-----", "missing code");
@@ -928,28 +924,41 @@ public class VideoDetailFragment
         return sortedVideoStreams != null ? sortedVideoStreams.get(selectedVideoStreamIndex) : null;
     }
 
-    private void prepareDescription(final String descriptionHtml) {
-        if (TextUtils.isEmpty(descriptionHtml)) {
+    private void prepareDescription(Description description) {
+        if (TextUtils.isEmpty(description.getContent()) || description == Description.emptyDescription) {
             return;
         }
 
-        disposables.add(Single.just(descriptionHtml)
-                .map((@io.reactivex.annotations.NonNull String description) -> {
-                    Spanned parsedDescription;
-                    if (Build.VERSION.SDK_INT >= 24) {
-                        parsedDescription = Html.fromHtml(description, 0);
-                    } else {
-                        //noinspection deprecation
-                        parsedDescription = Html.fromHtml(description);
-                    }
-                    return parsedDescription;
-                })
-                .subscribeOn(Schedulers.computation())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe((@io.reactivex.annotations.NonNull Spanned spanned) -> {
-                    videoDescriptionView.setText(spanned);
-                    videoDescriptionView.setVisibility(View.VISIBLE);
-                }));
+        if (description.getType() == Description.HTML) {
+            disposables.add(Single.just(description.getContent())
+                    .map((@io.reactivex.annotations.NonNull String descriptionText) -> {
+                        Spanned parsedDescription;
+                        if (Build.VERSION.SDK_INT >= 24) {
+                            parsedDescription = Html.fromHtml(descriptionText, 0);
+                        } else {
+                            //noinspection deprecation
+                            parsedDescription = Html.fromHtml(descriptionText);
+                        }
+                        return parsedDescription;
+                    })
+                    .subscribeOn(Schedulers.computation())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe((@io.reactivex.annotations.NonNull Spanned spanned) -> {
+                        videoDescriptionView.setText(spanned);
+                        videoDescriptionView.setVisibility(View.VISIBLE);
+                    }));
+        } else if (description.getType() == Description.MARKDOWN) {
+            final Markwon markwon = Markwon.builder(getContext())
+                    .usePlugin(LinkifyPlugin.create())
+                    .build();
+            markwon.setMarkdown(videoDescriptionView, description.getContent());
+            videoDescriptionView.setVisibility(View.VISIBLE);
+        } else {
+            //== Description.PLAIN_TEXT
+            videoDescriptionView.setAutoLinkMask(Linkify.WEB_URLS);
+            videoDescriptionView.setText(description.getContent(), TextView.BufferType.SPANNABLE);
+            videoDescriptionView.setVisibility(View.VISIBLE);
+        }
     }
 
     private void setHeightThumbnail() {
@@ -1070,7 +1079,7 @@ public class VideoDetailFragment
             if (info.getStreamType().equals(StreamType.AUDIO_LIVE_STREAM)) {
                 videoCountView.setText(Localization.listeningCount(activity, info.getViewCount()));
             } else if (info.getStreamType().equals(StreamType.LIVE_STREAM)) {
-                videoCountView.setText(Localization.watchingCount(activity, info.getViewCount()));
+                videoCountView.setText(Localization.localizeWatchingCount(activity, info.getViewCount()));
             } else {
                 videoCountView.setText(Localization.localizeViewCount(activity, info.getViewCount()));
             }

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -175,17 +175,20 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+            case R.id.action_settings:
+                NavigationHelper.openSettings(requireContext());
+                break;
             case R.id.menu_item_rss:
                 openRssFeed();
                 break;
             case R.id.menu_item_openInBrowser:
                 if (currentInfo != null) {
-                    ShareUtils.openUrlInBrowser(this.getContext(), currentInfo.getOriginalUrl());
+                    ShareUtils.openUrlInBrowser(requireContext(), currentInfo.getOriginalUrl());
                 }
                 break;
             case R.id.menu_item_share:
                 if (currentInfo != null) {
-                    ShareUtils.shareUrl(this.getContext(), name, currentInfo.getOriginalUrl());
+                    ShareUtils.shareUrl(requireContext(), name, currentInfo.getOriginalUrl());
                 }
                 break;
             default:
@@ -370,7 +373,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
 
         headerSubscribersTextView.setVisibility(View.VISIBLE);
         if (result.getSubscriberCount() >= 0) {
-            headerSubscribersTextView.setText(Localization.localizeSubscribersCount(activity, result.getSubscriberCount()));
+            headerSubscribersTextView.setText(Localization.shortSubscriberCount(activity, result.getSubscriberCount()));
         } else {
             headerSubscribersTextView.setText(R.string.subscribers_count_not_available);
         }

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -222,11 +222,14 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+            case R.id.action_settings:
+                NavigationHelper.openSettings(requireContext());
+                break;
             case R.id.menu_item_openInBrowser:
-                ShareUtils.openUrlInBrowser(this.getContext(), url);
+                ShareUtils.openUrlInBrowser(requireContext(), url);
                 break;
             case R.id.menu_item_share:
-                ShareUtils.shareUrl(this.getContext(), name, url);
+                ShareUtils.shareUrl(requireContext(), name, url);
                 break;
             case R.id.menu_item_bookmark:
                 onBookmarkClicked();

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -190,7 +190,7 @@ public class SearchFragment
 
         SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
         isSuggestionsEnabled = preferences.getBoolean(getString(R.string.show_search_suggestions_key), true);
-        contentCountry = preferences.getString(getString(R.string.content_country_key), getString(R.string.default_country_value));
+        contentCountry = preferences.getString(getString(R.string.content_country_key), getString(R.string.default_localization_key));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentsMiniInfoItemHolder.java

@@ -1,9 +1,15 @@
 package org.schabi.newpipe.info_list.holder;
 
-import androidx.appcompat.app.AppCompatActivity;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Context;
 import android.text.util.Linkify;
+import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
 
 import org.jsoup.helper.StringUtil;
 import org.schabi.newpipe.R;
@@ -120,6 +126,21 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
                 itemBuilder.getOnCommentsSelectedListener().selected(item);
             }
         });
+
+
+        itemView.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View view) {
+
+                ClipboardManager clipboardManager = (ClipboardManager) itemBuilder.getContext()
+                                                    .getSystemService(Context.CLIPBOARD_SERVICE);
+                clipboardManager.setPrimaryClip(ClipData.newPlainText(null,commentText));
+                Toast.makeText(itemBuilder.getContext(), R.string.msg_copied, Toast.LENGTH_SHORT).show();
+                return true;
+
+            }
+        });
+
     }
 
     private void ellipsize() {

app/src/main/java/org/schabi/newpipe/info_list/holder/StreamInfoItemHolder.java

@@ -60,7 +60,7 @@ public class StreamInfoItemHolder extends StreamMiniInfoItemHolder {
             if (infoItem.getStreamType().equals(StreamType.AUDIO_LIVE_STREAM)) {
                 viewsAndDate = Localization.listeningCount(itemBuilder.getContext(), infoItem.getViewCount());
             } else if (infoItem.getStreamType().equals(StreamType.LIVE_STREAM)) {
-                viewsAndDate = Localization.watchingCount(itemBuilder.getContext(), infoItem.getViewCount());
+                viewsAndDate = Localization.shortWatchingCount(itemBuilder.getContext(), infoItem.getViewCount());
             } else {
                 viewsAndDate = Localization.shortViewCount(itemBuilder.getContext(), infoItem.getViewCount());
             }

app/src/main/java/org/schabi/newpipe/local/bookmark/BookmarkFragment.java

@@ -1,8 +1,11 @@
 package org.schabi.newpipe.local.bookmark;
 
 import android.app.AlertDialog;
+import android.app.AlertDialog.Builder;
 import android.os.Bundle;
 import android.os.Parcelable;
+import android.util.Log;
+import android.widget.EditText;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.FragmentManager;
@@ -10,6 +13,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import io.reactivex.disposables.Disposable;
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 import org.schabi.newpipe.NewPipeDatabase;
@@ -118,8 +122,7 @@ public final class BookmarkFragment
             @Override
             public void held(LocalItem selectedItem) {
                 if (selectedItem instanceof PlaylistMetadataEntry) {
-                    showLocalDeleteDialog((PlaylistMetadataEntry) selectedItem);
-
+                    showLocalDialog((PlaylistMetadataEntry) selectedItem);
                 } else if (selectedItem instanceof PlaylistRemoteEntity) {
                     showRemoteDeleteDialog((PlaylistRemoteEntity) selectedItem);
                 }
@@ -247,14 +250,30 @@ public final class BookmarkFragment
     // Utils
     ///////////////////////////////////////////////////////////////////////////
 
-    private void showLocalDeleteDialog(final PlaylistMetadataEntry item) {
-        showDeleteDialog(item.name, localPlaylistManager.deletePlaylist(item.uid));
-    }
-
     private void showRemoteDeleteDialog(final PlaylistRemoteEntity item) {
         showDeleteDialog(item.getName(), remotePlaylistManager.deletePlaylist(item.getUid()));
     }
 
+    private void showLocalDialog(PlaylistMetadataEntry selectedItem) {
+        View dialogView = View.inflate(getContext(), R.layout.dialog_bookmark, null);
+        EditText editText = dialogView.findViewById(R.id.playlist_name_edit_text);
+        editText.setText(selectedItem.name);
+
+        Builder builder = new AlertDialog.Builder(activity);
+        builder.setView(dialogView)
+            .setPositiveButton(R.string.rename_playlist, (dialog, which) -> {
+                changeLocalPlaylistName(selectedItem.uid, editText.getText().toString());
+            })
+            .setNegativeButton(R.string.cancel, null)
+            .setNeutralButton(R.string.delete, (dialog, which) -> {
+                showDeleteDialog(selectedItem.name,
+                    localPlaylistManager.deletePlaylist(selectedItem.uid));
+                dialog.dismiss();
+            })
+            .create()
+            .show();
+    }
+
     private void showDeleteDialog(final String name, final Single<Integer> deleteReactor) {
         if (activity == null || disposables == null) return;
 
@@ -271,6 +290,23 @@ public final class BookmarkFragment
                 .show();
     }
 
+    private void changeLocalPlaylistName(long id, String name) {
+        if (localPlaylistManager == null) {
+            return;
+        }
+
+        if (DEBUG) {
+            Log.d(TAG, "Updating playlist id=[" + id +
+                "] with new name=[" + name + "] items");
+        }
+
+        localPlaylistManager.renamePlaylist(id, name);
+        final Disposable disposable = localPlaylistManager.renamePlaylist(id, name)
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(longs -> {/*Do nothing on success*/}, this::onError);
+        disposables.add(disposable);
+    }
+
     private static List<PlaylistLocalItem> merge(final List<PlaylistMetadataEntry> localPlaylists,
                                                  final List<PlaylistRemoteEntity> remotePlaylists) {
         List<PlaylistLocalItem> items = new ArrayList<>(

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistAppendDialog.java

@@ -1,15 +1,16 @@
 package org.schabi.newpipe.local.dialog;
 
 import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 import org.schabi.newpipe.NewPipeDatabase;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.LocalItem;
@@ -152,6 +153,12 @@ public final class PlaylistAppendDialog extends PlaylistDialog {
         final Toast successToast = Toast.makeText(getContext(),
                 R.string.playlist_add_stream_success, Toast.LENGTH_SHORT);
 
+        if (playlist.thumbnailUrl.equals("drawable://" + R.drawable.dummy_thumbnail_playlist)) {
+            playlistDisposables.add(manager.changePlaylistThumbnail(playlist.uid, streams.get(0).getThumbnailUrl())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(ignored -> successToast.show()));
+        }
+
         playlistDisposables.add(manager.appendToPlaylist(playlist.uid, streams)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(ignored -> successToast.show()));

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistFragment.java

@@ -4,11 +4,6 @@ import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
 import android.os.Parcelable;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AlertDialog;
-import androidx.recyclerview.widget.RecyclerView;
-import androidx.recyclerview.widget.ItemTouchHelper;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -18,6 +13,12 @@ import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.recyclerview.widget.ItemTouchHelper;
+import androidx.recyclerview.widget.RecyclerView;
+
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 import org.schabi.newpipe.NewPipeDatabase;
@@ -325,6 +326,16 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         headerBackgroundButton.setOnClickListener(view ->
                 NavigationHelper.playOnBackgroundPlayer(activity, getPlayQueue(), false));
 
+        headerPopupButton.setOnLongClickListener(view -> {
+            NavigationHelper.enqueueOnPopupPlayer(activity, getPlayQueue(), true);
+            return true;
+        });
+
+        headerBackgroundButton.setOnLongClickListener(view -> {
+            NavigationHelper.enqueueOnBackgroundPlayer(activity, getPlayQueue(), true);
+            return true;
+        });
+
         hideLoading();
     }
 
@@ -377,8 +388,10 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         this.name = name;
         setTitle(name);
 
-        Log.d(TAG, "Updating playlist id=[" + playlistId +
+        if (DEBUG) {
+            Log.d(TAG, "Updating playlist id=[" + playlistId +
                 "] with new name=[" + name + "] items");
+        }
 
         final Disposable disposable = playlistManager.renamePlaylist(playlistId, name)
                 .observeOn(AndroidSchedulers.mainThread())
@@ -393,8 +406,10 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
                 R.string.playlist_thumbnail_change_success,
                 Toast.LENGTH_SHORT);
 
-        Log.d(TAG, "Updating playlist id=[" + playlistId +
+        if (DEBUG) {
+            Log.d(TAG, "Updating playlist id=[" + playlistId +
                 "] with new thumbnail url=[" + thumbnailUrl + "]");
+        }
 
         final Disposable disposable = playlistManager
                 .changePlaylistThumbnail(playlistId, thumbnailUrl)
@@ -403,10 +418,25 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         disposables.add(disposable);
     }
 
+    private void updateThumbnailUrl() {
+        String newThumbnailUrl;
+
+        if (!itemListAdapter.getItemsList().isEmpty()) {
+            newThumbnailUrl = ((PlaylistStreamEntry) itemListAdapter.getItemsList().get(0)).thumbnailUrl;
+        } else {
+            newThumbnailUrl = "drawable://" + R.drawable.dummy_thumbnail_playlist;
+        }
+
+        changeThumbnailUrl(newThumbnailUrl);
+    }
+
     private void deleteItem(final PlaylistStreamEntry item) {
         if (itemListAdapter == null) return;
 
         itemListAdapter.removeItem(item);
+        if (playlistManager.getPlaylistThumbnail(playlistId).equals(item.thumbnailUrl))
+            updateThumbnailUrl();
+
         setVideoCount(itemListAdapter.getItemsList().size());
         saveChanges();
     }
@@ -446,8 +476,10 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
             }
         }
 
-        Log.d(TAG, "Updating playlist id=[" + playlistId +
+        if (DEBUG) {
+            Log.d(TAG, "Updating playlist id=[" + playlistId +
                 "] with [" + streamIds.size() + "] items");
+        }
 
         final Disposable disposable = playlistManager.updateJoin(playlistId, streamIds)
                 .observeOn(AndroidSchedulers.mainThread())

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistManager.java

@@ -103,6 +103,10 @@ public class LocalPlaylistManager {
         return modifyPlaylist(playlistId, null, thumbnailUrl);
     }
 
+    public String getPlaylistThumbnail(final long playlistId) {
+        return playlistTable.getPlaylist(playlistId).blockingFirst().get(0).getThumbnailUrl();
+    }
+
     private Maybe<Integer> modifyPlaylist(final long playlistId,
                                           @Nullable final String name,
                                           @Nullable final String thumbnailUrl) {

app/src/main/java/org/schabi/newpipe/local/subscription/ImportConfirmationDialog.java

@@ -15,6 +15,8 @@ import org.schabi.newpipe.util.ThemeHelper;
 import icepick.Icepick;
 import icepick.State;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 public class ImportConfirmationDialog extends DialogFragment {
     @State
     protected Intent resultServiceIntent;
@@ -34,11 +36,12 @@ public class ImportConfirmationDialog extends DialogFragment {
     @NonNull
     @Override
     public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        assureCorrectAppLanguage(getContext());
         return new AlertDialog.Builder(getContext(), ThemeHelper.getDialogTheme(getContext()))
                 .setMessage(R.string.import_network_expensive_warning)
                 .setCancelable(true)
                 .setNegativeButton(R.string.cancel, null)
-                .setPositiveButton(android.R.string.ok, (dialogInterface, i) -> {
+                .setPositiveButton(R.string.finish, (dialogInterface, i) -> {
                     if (resultServiceIntent != null && getContext() != null) {
                         getContext().startService(resultServiceIntent);
                     }

app/src/main/java/org/schabi/newpipe/player/BackgroundPlayer.java

@@ -25,12 +25,17 @@ import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.os.Build;
 import android.os.IBinder;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationCompat;
+
+import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.View;
 import android.widget.RemoteViews;
@@ -48,11 +53,12 @@ import org.schabi.newpipe.player.helper.LockManager;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 import org.schabi.newpipe.player.resolver.AudioPlaybackResolver;
 import org.schabi.newpipe.player.resolver.MediaSourceTag;
+import org.schabi.newpipe.util.BitmapUtils;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import static org.schabi.newpipe.player.helper.PlayerHelper.getTimeString;
-
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 /**
  * Base players joining the common properties
@@ -75,6 +81,7 @@ public final class BackgroundPlayer extends Service {
 
     private BasePlayerImpl basePlayerImpl;
     private LockManager lockManager;
+    private SharedPreferences sharedPreferences;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Service-Activity Binder
@@ -95,6 +102,9 @@ public final class BackgroundPlayer extends Service {
 
     private boolean shouldUpdateOnProgress;
 
+    private static final int NOTIFICATION_UPDATES_BEFORE_RESET = 60;
+    private int timesNotificationUpdated;
+
     /*//////////////////////////////////////////////////////////////////////////
     // Service's LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
@@ -104,7 +114,8 @@ public final class BackgroundPlayer extends Service {
         if (DEBUG) Log.d(TAG, "onCreate() called");
         notificationManager = ((NotificationManager) getSystemService(NOTIFICATION_SERVICE));
         lockManager = new LockManager(this);
-
+        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+        assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
         basePlayerImpl = new BasePlayerImpl(this);
         basePlayerImpl.setup();
@@ -180,6 +191,7 @@ public final class BackgroundPlayer extends Service {
 
     private void resetNotification() {
         notBuilder = createNotification();
+        timesNotificationUpdated = 0;
     }
 
     private NotificationCompat.Builder createNotification() {
@@ -195,12 +207,45 @@ public final class BackgroundPlayer extends Service {
                 .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                 .setCustomContentView(notRemoteView)
                 .setCustomBigContentView(bigNotRemoteView);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            setLockScreenThumbnail(builder);
+        }
+
         if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
             builder.setPriority(NotificationCompat.PRIORITY_MAX);
         }
         return builder;
     }
 
+    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    private void setLockScreenThumbnail(NotificationCompat.Builder builder) {
+        boolean isLockScreenThumbnailEnabled = sharedPreferences.getBoolean(
+                getString(R.string.enable_lock_screen_video_thumbnail_key),
+                true
+        );
+
+        if (isLockScreenThumbnailEnabled) {
+            basePlayerImpl.mediaSessionManager.setLockScreenArt(
+                    builder,
+                    getCenteredThumbnailBitmap()
+            );
+        } else {
+            basePlayerImpl.mediaSessionManager.clearLockScreenArt(builder);
+        }
+    }
+
+    @Nullable
+    private Bitmap getCenteredThumbnailBitmap() {
+        int screenWidth = Resources.getSystem().getDisplayMetrics().widthPixels;
+        int screenHeight = Resources.getSystem().getDisplayMetrics().heightPixels;
+
+        return BitmapUtils.centerCrop(
+                basePlayerImpl.getThumbnail(),
+                screenWidth,
+                screenHeight);
+    }
+
     private void setupNotification(RemoteViews remoteViews) {
         if (basePlayerImpl == null) return;
 
@@ -248,10 +293,13 @@ public final class BackgroundPlayer extends Service {
         //if (DEBUG) Log.d(TAG, "updateNotification() called with: drawableId = [" + drawableId + "]");
         if (notBuilder == null) return;
         if (drawableId != -1) {
-            if (notRemoteView != null) notRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
-            if (bigNotRemoteView != null) bigNotRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
+            if (notRemoteView != null)
+                notRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
+            if (bigNotRemoteView != null)
+                bigNotRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
         }
         notificationManager.notify(NOTIFICATION_ID, notBuilder.build());
+        timesNotificationUpdated++;
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -275,7 +323,8 @@ public final class BackgroundPlayer extends Service {
 
     protected class BasePlayerImpl extends BasePlayer {
 
-        @NonNull final private AudioPlaybackResolver resolver;
+        @NonNull
+        final private AudioPlaybackResolver resolver;
         private int cachedDuration;
         private String cachedDurationString;
 
@@ -294,8 +343,10 @@ public final class BackgroundPlayer extends Service {
             super.handleIntent(intent);
 
             resetNotification();
-            if (bigNotRemoteView != null) bigNotRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
-            if (notRemoteView != null) notRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
+            if (bigNotRemoteView != null)
+                bigNotRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
+            if (notRemoteView != null)
+                notRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
             startForeground(NOTIFICATION_ID, notBuilder.build());
         }
 
@@ -330,6 +381,7 @@ public final class BackgroundPlayer extends Service {
             updateNotificationThumbnail();
             updateNotification(-1);
         }
+
         /*//////////////////////////////////////////////////////////////////////////
         // States Implementation
         //////////////////////////////////////////////////////////////////////////*/
@@ -351,10 +403,15 @@ public final class BackgroundPlayer extends Service {
             updateProgress(currentProgress, duration, bufferPercent);
 
             if (!shouldUpdateOnProgress) return;
-            resetNotification();
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O /*Oreo*/) updateNotificationThumbnail();
+            if (timesNotificationUpdated > NOTIFICATION_UPDATES_BEFORE_RESET) {
+                resetNotification();
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O /*Oreo*/) {
+                    updateNotificationThumbnail();
+                }
+            }
             if (bigNotRemoteView != null) {
-                if(cachedDuration != duration) {
+                if (cachedDuration != duration) {
                     cachedDuration = duration;
                     cachedDurationString = getTimeString(duration);
                 }
@@ -382,8 +439,10 @@ public final class BackgroundPlayer extends Service {
         @Override
         public void destroy() {
             super.destroy();
-            if (notRemoteView != null) notRemoteView.setImageViewBitmap(R.id.notificationCover, null);
-            if (bigNotRemoteView != null) bigNotRemoteView.setImageViewBitmap(R.id.notificationCover, null);
+            if (notRemoteView != null)
+                notRemoteView.setImageViewBitmap(R.id.notificationCover, null);
+            if (bigNotRemoteView != null)
+                bigNotRemoteView.setImageViewBitmap(R.id.notificationCover, null);
         }
 
         /*//////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/player/BackgroundPlayerActivity.java

@@ -57,7 +57,10 @@ public final class BackgroundPlayerActivity extends ServicePlayerActivity {
 
             this.player.setRecovery();
             getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
-            getApplicationContext().startService(getSwitchIntent(PopupVideoPlayer.class));
+            getApplicationContext().startService(
+                getSwitchIntent(PopupVideoPlayer.class)
+                    .putExtra(BasePlayer.START_PAUSED, !this.player.isPlaying())
+            );
             return true;
         }
         return false;

app/src/main/java/org/schabi/newpipe/player/BasePlayer.java

@@ -150,6 +150,8 @@ public abstract class BasePlayer implements
     @NonNull
     public static final String RESUME_PLAYBACK = "resume_playback";
     @NonNull
+    public static final String START_PAUSED = "start_paused";
+    @NonNull
     public static final String SELECT_ON_APPEND = "select_on_append";
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -304,7 +306,7 @@ public abstract class BasePlayer implements
         }
         // Good to go...
         initPlayback(queue, repeatMode, playbackSpeed, playbackPitch, playbackSkipSilence,
-                /*playOnInit=*/true);
+                /*playOnInit=*/!intent.getBooleanExtra(START_PAUSED, false));
     }
 
     protected void initPlayback(@NonNull final PlayQueue queue,
@@ -944,10 +946,10 @@ public abstract class BasePlayer implements
     public void onPlayPause() {
         if (DEBUG) Log.d(TAG, "onPlayPause() called");
 
-        if (!isPlaying()) {
-            onPlay();
-        } else {
+        if (isPlaying()) {
             onPause();
+        } else {
+            onPlay();
         }
     }
 

app/src/main/java/org/schabi/newpipe/player/MainVideoPlayer.java

@@ -28,6 +28,7 @@ import android.database.ContentObserver;
 import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
 import android.media.AudioManager;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
@@ -75,6 +76,7 @@ import org.schabi.newpipe.player.playqueue.PlayQueueItemTouchCallback;
 import org.schabi.newpipe.player.resolver.MediaSourceTag;
 import org.schabi.newpipe.player.resolver.VideoPlaybackResolver;
 import org.schabi.newpipe.util.AnimationUtils;
+import org.schabi.newpipe.util.KoreUtil;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
@@ -93,6 +95,7 @@ import static org.schabi.newpipe.util.AnimationUtils.Type.SCALE_AND_ALPHA;
 import static org.schabi.newpipe.util.AnimationUtils.Type.SLIDE_AND_ALPHA;
 import static org.schabi.newpipe.util.AnimationUtils.animateRotation;
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 import static org.schabi.newpipe.util.StateSaver.KEY_SAVED_STATE;
 
 /**
@@ -123,6 +126,7 @@ public final class MainVideoPlayer extends AppCompatActivity
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
+        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         if (DEBUG) Log.d(TAG, "onCreate() called with: savedInstanceState = [" + savedInstanceState + "]");
         defaultPreferences = PreferenceManager.getDefaultSharedPreferences(this);
@@ -190,6 +194,7 @@ public final class MainVideoPlayer extends AppCompatActivity
     @Override
     protected void onResume() {
         if (DEBUG) Log.d(TAG, "onResume() called");
+        assureCorrectAppLanguage(this);
         super.onResume();
 
         if (globalScreenOrientationLocked()) {
@@ -220,6 +225,7 @@ public final class MainVideoPlayer extends AppCompatActivity
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
+        assureCorrectAppLanguage(this);
 
         if (playerImpl.isSomePopupMenuVisible()) {
             playerImpl.getQualityPopupMenu().dismiss();
@@ -364,8 +370,8 @@ public final class MainVideoPlayer extends AppCompatActivity
     }
 
     private boolean globalScreenOrientationLocked() {
-        // 1: Screen orientation changes using acelerometer
-        // 0: Screen orientatino is locked
+        // 1: Screen orientation changes using accelerometer
+        // 0: Screen orientation is locked
         return !(android.provider.Settings.System.getInt(getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0) == 1);
     }
 
@@ -435,6 +441,7 @@ public final class MainVideoPlayer extends AppCompatActivity
         private boolean queueVisible;
 
         private ImageButton moreOptionsButton;
+        private ImageButton kodiButton;
         private ImageButton shareButton;
         private ImageButton toggleOrientationButton;
         private ImageButton switchPopupButton;
@@ -471,6 +478,7 @@ public final class MainVideoPlayer extends AppCompatActivity
 
             this.moreOptionsButton = rootView.findViewById(R.id.moreOptionsButton);
             this.secondaryControls = rootView.findViewById(R.id.secondaryControls);
+            this.kodiButton = rootView.findViewById(R.id.kodi);
             this.shareButton = rootView.findViewById(R.id.share);
             this.toggleOrientationButton = rootView.findViewById(R.id.toggleOrientation);
             this.switchBackgroundButton = rootView.findViewById(R.id.switchBackground);
@@ -482,6 +490,9 @@ public final class MainVideoPlayer extends AppCompatActivity
 
             titleTextView.setSelected(true);
             channelTextView.setSelected(true);
+            boolean showKodiButton = PreferenceManager.getDefaultSharedPreferences(this.context).getBoolean(
+					this.context.getString(R.string.show_play_with_kodi_key), false);
+            kodiButton.setVisibility(showKodiButton ? View.VISIBLE : View.GONE);
 
             getRootView().setKeepScreenOn(true);
         }
@@ -518,6 +529,7 @@ public final class MainVideoPlayer extends AppCompatActivity
             closeButton.setOnClickListener(this);
 
             moreOptionsButton.setOnClickListener(this);
+            kodiButton.setOnClickListener(this);
             shareButton.setOnClickListener(this);
             toggleOrientationButton.setOnClickListener(this);
             switchBackgroundButton.setOnClickListener(this);
@@ -588,6 +600,17 @@ public final class MainVideoPlayer extends AppCompatActivity
             finish();
         }
 
+        public void onKodiShare() {
+            onPause();
+            try {
+                NavigationHelper.playWithKore(this.context, Uri.parse(
+                        playerImpl.getVideoUrl().replace("https", "http")));
+            } catch (Exception e) {
+                if (DEBUG) Log.i(TAG, "Failed to start kore", e);
+                KoreUtil.showInstallKoreDialog(this.context);
+            }
+        }
+
         /*//////////////////////////////////////////////////////////////////////////
         // Player Overrides
         //////////////////////////////////////////////////////////////////////////*/
@@ -614,7 +637,8 @@ public final class MainVideoPlayer extends AppCompatActivity
                     this.getPlaybackPitch(),
                     this.getPlaybackSkipSilence(),
                     this.getPlaybackQuality(),
-                    false
+                    false,
+                    !isPlaying()
             );
             context.startService(intent);
 
@@ -637,7 +661,8 @@ public final class MainVideoPlayer extends AppCompatActivity
                     this.getPlaybackPitch(),
                     this.getPlaybackSkipSilence(),
                     this.getPlaybackQuality(),
-                    false
+                    false,
+                    !isPlaying()
             );
             context.startService(intent);
 
@@ -686,6 +711,8 @@ public final class MainVideoPlayer extends AppCompatActivity
             } else if (v.getId() == closeButton.getId()) {
                 onPlaybackShutdown();
                 return;
+            } else if (v.getId() == kodiButton.getId()) {
+            	onKodiShare();
             }
 
             if (getCurrentState() != STATE_COMPLETED) {
@@ -882,6 +909,18 @@ public final class MainVideoPlayer extends AppCompatActivity
                 final float currentVolumeNormalized = (float) getAudioReactor().getVolume() / getAudioReactor().getMaxVolume();
                 volumeProgressBar.setProgress((int) (volumeProgressBar.getMax() * currentVolumeNormalized));
             }
+
+            float screenBrightness = getWindow().getAttributes().screenBrightness;
+            if (screenBrightness < 0)
+                screenBrightness = Settings.System.getInt(getContentResolver(),
+                        Settings.System.SCREEN_BRIGHTNESS, 0) / 255.0f;
+
+            brightnessProgressBar.setProgress((int) (brightnessProgressBar.getMax() * screenBrightness));
+
+            if (DEBUG) Log.d(TAG, "setInitialGestureValues: volumeProgressBar.getProgress() ["
+                    + volumeProgressBar.getProgress() + "] "
+                    + "brightnessProgressBar.getProgress() ["
+                    + brightnessProgressBar.getProgress() + "]");
         }
 
         @Override

app/src/main/java/org/schabi/newpipe/player/PopupVideoPlayer.java

@@ -80,6 +80,7 @@ import static org.schabi.newpipe.player.BasePlayer.STATE_PLAYING;
 import static org.schabi.newpipe.player.VideoPlayer.DEFAULT_CONTROLS_DURATION;
 import static org.schabi.newpipe.player.VideoPlayer.DEFAULT_CONTROLS_HIDE_TIME;
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 /**
  * Service Popup Player implementing VideoPlayer
@@ -142,6 +143,7 @@ public final class PopupVideoPlayer extends Service {
 
     @Override
     public void onCreate() {
+        assureCorrectAppLanguage(this);
         windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
         notificationManager = ((NotificationManager) getSystemService(NOTIFICATION_SERVICE));
 
@@ -169,6 +171,7 @@ public final class PopupVideoPlayer extends Service {
 
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
+        assureCorrectAppLanguage(this);
         if (DEBUG) Log.d(TAG, "onConfigurationChanged() called with: newConfig = [" + newConfig + "]");
         updateScreenSize();
         updatePopupSize(popupLayoutParams.width, -1);
@@ -567,7 +570,8 @@ public final class PopupVideoPlayer extends Service {
                     this.getPlaybackPitch(),
                     this.getPlaybackSkipSilence(),
                     this.getPlaybackQuality(),
-                    false
+                    false,
+                    !isPlaying()
             );
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent);
@@ -1123,4 +1127,4 @@ public final class PopupVideoPlayer extends Service {
             return distanceFromCloseButton(popupMotionEvent) <= getClosingRadius();
         }
     }
-}
+}

app/src/main/java/org/schabi/newpipe/player/PopupVideoPlayerActivity.java

@@ -50,7 +50,10 @@ public final class PopupVideoPlayerActivity extends ServicePlayerActivity {
         if (item.getItemId() == R.id.action_switch_background) {
             this.player.setRecovery();
             getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
-            getApplicationContext().startService(getSwitchIntent(BackgroundPlayer.class));
+            getApplicationContext().startService(
+                getSwitchIntent(BackgroundPlayer.class)
+                    .putExtra(BasePlayer.START_PAUSED, !this.player.isPlaying())
+            );
             return true;
         }
         return false;

app/src/main/java/org/schabi/newpipe/player/ServicePlayerActivity.java

@@ -46,6 +46,7 @@ import java.util.List;
 
 import static org.schabi.newpipe.player.helper.PlayerHelper.formatPitch;
 import static org.schabi.newpipe.player.helper.PlayerHelper.formatSpeed;
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 public abstract class ServicePlayerActivity extends AppCompatActivity
         implements PlayerEventListener, SeekBar.OnSeekBarChangeListener,
@@ -116,6 +117,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         ThemeHelper.setTheme(this);
         setContentView(R.layout.activity_player_queue_control);
@@ -154,12 +156,11 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             case android.R.id.home:
                 finish();
                 return true;
-            case R.id.action_append_playlist:
-                appendAllToPlaylist();
-                return true;
             case R.id.action_settings:
                 NavigationHelper.openSettings(this);
-                redraw = true;
+                return true;
+            case R.id.action_append_playlist:
+                appendAllToPlaylist();
                 return true;
             case R.id.action_system_audio:
                 startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
@@ -167,7 +168,10 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             case R.id.action_switch_main:
                 this.player.setRecovery();
                 getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
-                getApplicationContext().startActivity(getSwitchIntent(MainVideoPlayer.class));
+                getApplicationContext().startActivity(
+                    getSwitchIntent(MainVideoPlayer.class)
+                        .putExtra(BasePlayer.START_PAUSED, !this.player.isPlaying())
+                );
                 return true;
         }
         return onPlayerOptionSelected(item) || super.onOptionsItemSelected(item);
@@ -189,8 +193,10 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
                 this.player.getPlaybackPitch(),
                 this.player.getPlaybackSkipSilence(),
                 null,
+                false,
                 false
-        ).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        ).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                .putExtra(BasePlayer.START_PAUSED, !this.player.isPlaying());
     }
 
     ////////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/player/helper/MediaSessionManager.java

@@ -2,12 +2,19 @@ package org.schabi.newpipe.player.helper;
 
 import android.content.Context;
 import android.content.Intent;
+import android.graphics.Bitmap;
+import android.media.MediaMetadata;
+import android.os.Build;
+import android.support.v4.media.MediaMetadataCompat;
 import android.support.v4.media.session.MediaSessionCompat;
 import android.view.KeyEvent;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.core.app.NotificationCompat;
 import androidx.media.session.MediaButtonReceiver;
+import androidx.media.app.NotificationCompat.MediaStyle;
 
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector;
@@ -19,8 +26,10 @@ import org.schabi.newpipe.player.mediasession.PlayQueuePlaybackController;
 public class MediaSessionManager {
     private static final String TAG = "MediaSessionManager";
 
-    @NonNull private final MediaSessionCompat mediaSession;
-    @NonNull private final MediaSessionConnector sessionConnector;
+    @NonNull
+    private final MediaSessionCompat mediaSession;
+    @NonNull
+    private final MediaSessionConnector sessionConnector;
 
     public MediaSessionManager(@NonNull final Context context,
                                @NonNull final Player player,
@@ -40,13 +49,45 @@ public class MediaSessionManager {
         return MediaButtonReceiver.handleIntent(mediaSession, intent);
     }
 
+    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    public void setLockScreenArt(NotificationCompat.Builder builder, @Nullable Bitmap thumbnailBitmap) {
+        if (thumbnailBitmap == null || !mediaSession.isActive()) {
+            return;
+        }
+
+        mediaSession.setMetadata(
+                new MediaMetadataCompat.Builder()
+                        .putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, thumbnailBitmap)
+                        .build()
+        );
+
+        MediaStyle mediaStyle = new MediaStyle()
+                .setMediaSession(mediaSession.getSessionToken());
+
+        builder.setStyle(mediaStyle);
+    }
+
+    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    public void clearLockScreenArt(NotificationCompat.Builder builder) {
+        mediaSession.setMetadata(
+                new MediaMetadataCompat.Builder()
+                        .putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, null)
+                        .build()
+        );
+
+        MediaStyle mediaStyle = new MediaStyle()
+                .setMediaSession(mediaSession.getSessionToken());
+
+        builder.setStyle(mediaStyle);
+    }
+
     /**
      * Should be called on player destruction to prevent leakage.
-     * */
+     */
     public void dispose() {
         this.sessionConnector.setPlayer(null);
         this.sessionConnector.setQueueNavigator(null);
         this.mediaSession.setActive(false);
         this.mediaSession.release();
-	}
+    }
 }

app/src/main/java/org/schabi/newpipe/player/helper/PlaybackParameterDialog.java

@@ -17,6 +17,7 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.util.SliderStrategy;
 
 import static org.schabi.newpipe.player.BasePlayer.DEBUG;
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 public class PlaybackParameterDialog extends DialogFragment {
     @NonNull private static final String TAG = "PlaybackParameterDialog";
@@ -108,6 +109,7 @@ public class PlaybackParameterDialog extends DialogFragment {
 
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
+        assureCorrectAppLanguage(getContext());
         super.onCreate(savedInstanceState);
         if (savedInstanceState != null) {
             initialTempo = savedInstanceState.getDouble(INITIAL_TEMPO_KEY, DEFAULT_TEMPO);
@@ -137,6 +139,7 @@ public class PlaybackParameterDialog extends DialogFragment {
     @NonNull
     @Override
     public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        assureCorrectAppLanguage(getContext());
         final View view = View.inflate(getContext(), R.layout.dialog_playback_parameter, null);
         setupControlViews(view);