LoginActivity now fragmented

app/src/main/java/com/m2049r/xmrwallet/LoginActivity.java

@@ -18,6 +18,7 @@ package com.m2049r.xmrwallet;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.app.Fragment;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -33,9 +34,6 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.WindowManager;
 import android.view.inputmethod.EditorInfo;
-import android.view.inputmethod.InputMethodManager;
-import android.widget.AdapterView;
-import android.widget.ArrayAdapter;
 import android.widget.BaseAdapter;
 import android.widget.EditText;
 import android.widget.ListView;
@@ -54,110 +52,28 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
-public class LoginActivity extends Activity {
+public class LoginActivity extends Activity implements LoginFragment.LoginFragmentListener {
     static final String TAG = "LoginActivity";
 
-    static final int MIN_DAEMON_VERSION = 65544;
     static final int DAEMON_TIMEOUT = 500; // deamon must respond in 500ms
 
-    ListView listView;
-    List<String> walletList = new ArrayList<>();
-    List<String> displayedList = new ArrayList<>();
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_login);
+        setContentView(R.layout.login_activity);
-
+        if (savedInstanceState != null) {
-        final EditText etDaemonAddress = (EditText) findViewById(R.id.etDaemonAddress);
-        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
-
-        etDaemonAddress.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
-                imm.showSoftInput(etDaemonAddress, InputMethodManager.SHOW_IMPLICIT);
-            }
-        });
-        etDaemonAddress.setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) {
-                    getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
-                    return false;
-                }
-                return false;
-            }
-        });
-
-        ToggleButton tbMainNet = (ToggleButton) findViewById(R.id.tbMainNet);
-        tbMainNet.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                boolean mainnet = ((ToggleButton) v).isChecked();  // current state
-                savePrefs(true); // use previous state as we just clicked it
-                if (mainnet) {
-                    setDaemon(daemonMainNet);
-                } else {
-                    setDaemon(daemonTestNet);
-                }
-                filterList();
-                ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
-            }
-        });
-
-        loadPrefs();
-
-        filterList();
-
-        listView = (ListView) findViewById(R.id.list);
-        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
-                android.R.layout.simple_list_item_1, android.R.id.text1, this.displayedList);
-
-        listView.setAdapter(adapter);
-
-        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-                EditText tvDaemonAddress = (EditText) findViewById(R.id.etDaemonAddress);
-                if (tvDaemonAddress.getText().toString().length() == 0) {
-                    Toast.makeText(LoginActivity.this, getString(R.string.prompt_daemon_missing), Toast.LENGTH_LONG).show();
             return;
         }
-
-                String itemValue = (String) listView.getItemAtPosition(position);
-                if ((isMainNet() && itemValue.charAt(1) != '4')
-                        || (!isMainNet() && itemValue.charAt(1) != '9')) {
-                    Toast.makeText(LoginActivity.this, getString(R.string.prompt_wrong_net), Toast.LENGTH_LONG).show();
-                    return;
-                }
-
-                final int preambleLength = "[123456] ".length();
-                if (itemValue.length() <= (preambleLength)) {
-                    Toast.makeText(LoginActivity.this, getString(R.string.panic), Toast.LENGTH_LONG).show();
-                    return;
-                }
-                setWalletDaemon();
-                if (!checkWalletDaemon()) {
-                    Toast.makeText(LoginActivity.this, getString(R.string.warn_daemon_unavailable), Toast.LENGTH_LONG).show();
-                    return;
-                }
-
-                // looking good
-                savePrefs(false);
-
-                String wallet = itemValue.substring(preambleLength);
-                promptPassword(wallet);
-            }
-        });
         if (Helper.getWritePermission(this)) {
-            new LoadListTask().execute();
+            startLoginFragment();
         } else {
             Log.i(TAG, "Waiting for permissions");
         }
     }
 
     // adapted from http://www.mkyong.com/android/android-prompt-user-input-dialog-example/
-    void promptPassword(final String wallet) {
+    @Override
+    public void promptPassword(final String wallet) {
         Context context = LoginActivity.this;
         LayoutInflater li = LayoutInflater.from(context);
         View promptsView = li.inflate(R.layout.prompt_password, null);
@@ -209,6 +125,13 @@ public class LoginActivity extends Activity {
         alertDialog.show();
     }
 
+    private boolean checkWalletPassword(String walletName, String password) {
+        String walletPath = new File(Helper.getStorageRoot(getApplicationContext()),
+                walletName + ".keys").getAbsolutePath();
+        // only test view key
+        return WalletManager.getInstance().verifyWalletPassword(walletPath, password, true);
+    }
+
     private void processPasswordEntry(String walletName, String pass) {
         if (checkWalletPassword(walletName, pass)) {
             startWallet(walletName, pass);
@@ -217,43 +140,25 @@ public class LoginActivity extends Activity {
         }
     }
 
-    private boolean checkWalletDaemon() {
+    ////////////////////////////////////////
-//        if (android.os.Build.VERSION.SDK_INT > 9) {
+    // LoginFragment.LoginFragmentListener
-        StrictMode.ThreadPolicy prevPolicy = StrictMode.getThreadPolicy();
+    ////////////////////////////////////////
-        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder(prevPolicy).permitNetwork().build();
+    @Override
-        StrictMode.setThreadPolicy(policy);
+    public SharedPreferences getPrefs() {
-        String d[] = WalletManager.getInstance().getDaemonAddress().split(":");
+        return getPreferences(Context.MODE_PRIVATE);
-        String host = d[0];
-        int port = Integer.parseInt(d[1]);
-        Socket socket = new Socket();
-        long a = new Date().getTime();
-        try {
-            socket.connect(new InetSocketAddress(host, port), DAEMON_TIMEOUT);
-            socket.close();
-        } catch (IOException ex) {
-            Log.d(TAG, "Cannot reach daemon " + host + ":" + port + " because " + ex.getLocalizedMessage());
-            return false;
-        } finally {
-            StrictMode.setThreadPolicy(prevPolicy);
-        }
-        long b = new Date().getTime();
-        Log.d(TAG, "Daemon is " + (b - a) + "ms away.");
-        int version = WalletManager.getInstance().getDaemonVersion();
-        Log.d(TAG, "Daemon is v" + version);
-        return (version >= MIN_DAEMON_VERSION);
     }
 
-    private boolean checkWalletPassword(String walletName, String password) {
+    @Override
-        String walletPath = new File(Helper.getStorageRoot(getApplicationContext()),
+    public File getStorageRoot() {
-                walletName + ".keys").getAbsolutePath();
+        return Helper.getStorageRoot(getApplicationContext());
-        // only test view key
-        return WalletManager.getInstance().verifyWalletPassword(walletPath, password, true);
     }
 
+    ////////////////////////////////////////
+    ////////////////////////////////////////
+
     @Override
     protected void onPause() {
         Log.d(TAG, "onPause()");
-        savePrefs(false);
         super.onPause();
     }
 
@@ -263,76 +168,6 @@ public class LoginActivity extends Activity {
         Log.d(TAG, "onResume()");
     }
 
-    boolean isMainNet() {
-        ToggleButton tbMainNet = (ToggleButton) findViewById(R.id.tbMainNet);
-        return tbMainNet.isChecked();
-    }
-
-    void setMainNet(boolean mainnet) {
-        ToggleButton tbMainNet = (ToggleButton) findViewById(R.id.tbMainNet);
-        tbMainNet.setChecked(mainnet);
-    }
-
-    String getDaemon() {
-        EditText tvDaemonAddress = (EditText) findViewById(R.id.etDaemonAddress);
-        return tvDaemonAddress.getText().toString();
-    }
-
-    void setDaemon(String address) {
-        EditText tvDaemonAddress = (EditText) findViewById(R.id.etDaemonAddress);
-        tvDaemonAddress.setText(address);
-    }
-
-    private static final String PREF_DAEMON_TESTNET = "daemon_testnet";
-    private static final String PREF_DAEMON_MAINNET = "daemon_mainnet";
-    private static final String PREF_MAINNET = "mainnet";
-
-    private String daemonTestNet;
-    private String daemonMainNet;
-
-    void loadPrefs() {
-        SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
-
-        boolean mainnet = sharedPref.getBoolean(PREF_MAINNET, false);
-        daemonMainNet = sharedPref.getString(PREF_DAEMON_MAINNET, "localhost:18081");
-        daemonTestNet = sharedPref.getString(PREF_DAEMON_TESTNET, "localhost:28081");
-
-        setMainNet(mainnet);
-        if (mainnet) {
-            setDaemon(daemonMainNet);
-        } else {
-            setDaemon(daemonTestNet);
-        }
-    }
-
-    void savePrefs(boolean usePreviousState) {
-        // save the daemon address for the net
-        boolean mainnet = isMainNet() ^ usePreviousState;
-        String daemon = getDaemon();
-        if (mainnet) {
-            daemonMainNet = daemon;
-        } else {
-            daemonTestNet = daemon;
-        }
-
-        SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = sharedPref.edit();
-        editor.putBoolean(PREF_MAINNET, mainnet);
-        editor.putString(PREF_DAEMON_MAINNET, daemonMainNet);
-        editor.putString(PREF_DAEMON_TESTNET, daemonTestNet);
-        editor.apply();
-    }
-
-    private void setWalletDaemon() {
-        boolean testnet = !isMainNet();
-        String daemon = getDaemon();
-
-        if (!daemon.contains(":")) {
-            daemon = daemon + (testnet ? ":28081" : ":18081");
-        }
-
-        WalletManager.getInstance().setDaemon(daemon, testnet);
-    }
 
     void startWallet(String walletName, String walletPassword) {
         Log.d(TAG, "startWallet()");
@@ -342,44 +177,6 @@ public class LoginActivity extends Activity {
         startActivity(intent);
     }
 
-    private void filterList() {
-        displayedList.clear();
-        char x = isMainNet() ? '4' : '9';
-        for (String s : walletList) {
-            if (s.charAt(1) == x) displayedList.add(s);
-        }
-    }
-
-    private class LoadListTask extends AsyncTask<String, Void, Integer> {
-        protected void onPreExecute() {
-            //Toast.makeText(LoginActivity.this, getString(R.string.status_walletlist_loading), Toast.LENGTH_LONG).show();
-        }
-
-        protected Integer doInBackground(String... params) {
-            WalletManager mgr = WalletManager.getInstance();
-            List<WalletManager.WalletInfo> walletInfos =
-                    mgr.findWallets(Helper.getStorageRoot(getApplicationContext()));
-
-            walletList.clear();
-            for (WalletManager.WalletInfo walletInfo : walletInfos) {
-                Log.d(TAG, walletInfo.address);
-                String displayAddress = walletInfo.address;
-                if (displayAddress.length() == 95) {
-                    displayAddress = walletInfo.address.substring(0, 6);
-                }
-                walletList.add("[" + displayAddress + "] " + walletInfo.name);
-            }
-            return 0;
-        }
-
-        protected void onPostExecute(Integer result) {
-            if (result == 0) {
-                filterList();
-                ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
-            }
-        }
-    }
-
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
         Log.d(TAG, "onRequestPermissionsResult()");
@@ -388,7 +185,7 @@ public class LoginActivity extends Activity {
                 // If request is cancelled, the result arrays are empty.
                 if (grantResults.length > 0
                         && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-                    new LoadListTask().execute();
+                    startLoginFragment();
                 } else {
                     String msg = getString(R.string.message_strorage_not_permitted);
                     Log.e(TAG, msg);
@@ -398,5 +195,18 @@ public class LoginActivity extends Activity {
             default:
         }
     }
-}
 
+    void startLoginFragment() {
+        // Create a new Fragment to be placed in the activity layout
+        Fragment fragment = new LoginFragment();
+
+        // In case this activity was started with special instructions from an
+        // Intent, pass the Intent's extras to the fragment as arguments
+        //firstFragment.setArguments(getIntent().getExtras());
+
+        // Add the fragment to the 'fragment_container' FrameLayout
+        getFragmentManager().beginTransaction()
+                .add(R.id.fragment_container, fragment).commit();
+        Log.d(TAG, "fragment added");
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/LoginFragment.java

@@ -0,0 +1,303 @@
+/*
+ * Copyright (c) 2017 m2049r
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.m2049r.xmrwallet;
+
+import android.app.Fragment;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.StrictMode;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.BaseAdapter;
+import android.widget.EditText;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.widget.ToggleButton;
+
+import com.m2049r.xmrwallet.model.WalletManager;
+import com.m2049r.xmrwallet.util.Helper;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class LoginFragment extends Fragment {
+    private static final String TAG = "LoginFragment";
+
+    ListView listView;
+    List<String> walletList = new ArrayList<>();
+    List<String> displayedList = new ArrayList<>();
+
+    ToggleButton tbMainNet;
+    EditText etDaemonAddress;
+
+    LoginFragment.LoginFragmentListener activityCallback;
+
+    // Container Activity must implement this interface
+    public interface LoginFragmentListener {
+        SharedPreferences getPrefs();
+
+        File getStorageRoot();
+
+        void promptPassword(final String wallet);
+    }
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        if (context instanceof LoginFragment.LoginFragmentListener) {
+            this.activityCallback = (LoginFragment.LoginFragmentListener) context;
+        } else {
+            throw new ClassCastException(context.toString()
+                    + " must implement WalletFragmentListener");
+        }
+    }
+
+    @Override
+    public void onPause() {
+        Log.d(TAG, "onPause()");
+        savePrefs(false);
+        super.onPause();
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View view = inflater.inflate(R.layout.login_fragment, container, false);
+
+        tbMainNet = (ToggleButton) view.findViewById(R.id.tbMainNet);
+        etDaemonAddress = (EditText) view.findViewById(R.id.etDaemonAddress);
+
+        getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
+
+        etDaemonAddress.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
+                imm.showSoftInput(etDaemonAddress, InputMethodManager.SHOW_IMPLICIT);
+            }
+        });
+        etDaemonAddress.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) {
+                    getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
+                    return false;
+                }
+                return false;
+            }
+        });
+
+        tbMainNet.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                boolean mainnet = ((ToggleButton) v).isChecked();  // current state
+                savePrefs(true); // use previous state as we just clicked it
+                if (mainnet) {
+                    setDaemon(daemonMainNet);
+                } else {
+                    setDaemon(daemonTestNet);
+                }
+                filterList();
+                ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
+            }
+        });
+
+        loadPrefs();
+
+        listView = (ListView) view.findViewById(R.id.list);
+        ArrayAdapter<String> adapter = new ArrayAdapter<>(getActivity(),
+                android.R.layout.simple_list_item_1, android.R.id.text1, this.displayedList);
+
+        listView.setAdapter(adapter);
+
+        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                EditText tvDaemonAddress = (EditText) getView().findViewById(R.id.etDaemonAddress);
+                if (tvDaemonAddress.getText().toString().length() == 0) {
+                    Toast.makeText(getActivity(), getString(R.string.prompt_daemon_missing), Toast.LENGTH_LONG).show();
+                    return;
+                }
+
+                String itemValue = (String) listView.getItemAtPosition(position);
+                if ((isMainNet() && itemValue.charAt(1) != '4')
+                        || (!isMainNet() && itemValue.charAt(1) != '9')) {
+                    Toast.makeText(getActivity(), getString(R.string.prompt_wrong_net), Toast.LENGTH_LONG).show();
+                    return;
+                }
+
+                final int preambleLength = "[123456] ".length();
+                if (itemValue.length() <= (preambleLength)) {
+                    Toast.makeText(getActivity(), getString(R.string.panic), Toast.LENGTH_LONG).show();
+                    return;
+                }
+                if (!checkAndSetWalletDaemon(getDaemon(), !isMainNet())) {
+                    Toast.makeText(getActivity(), getString(R.string.warn_daemon_unavailable), Toast.LENGTH_LONG).show();
+                    return;
+                }
+
+                // looking good
+                savePrefs(false);
+
+                String wallet = itemValue.substring(preambleLength);
+                activityCallback.promptPassword(wallet);
+            }
+        });
+        loadList();
+        return view;
+    }
+
+    private void filterList() {
+        displayedList.clear();
+        char x = isMainNet() ? '4' : '9';
+        for (String s : walletList) {
+            if (s.charAt(1) == x) displayedList.add(s);
+        }
+    }
+
+    private void loadList() {
+        WalletManager mgr = WalletManager.getInstance();
+        List<WalletManager.WalletInfo> walletInfos =
+                mgr.findWallets(activityCallback.getStorageRoot());
+
+        walletList.clear();
+        for (WalletManager.WalletInfo walletInfo : walletInfos) {
+            Log.d(TAG, walletInfo.address);
+            String displayAddress = walletInfo.address;
+            if (displayAddress.length() == 95) {
+                displayAddress = walletInfo.address.substring(0, 6);
+            }
+            walletList.add("[" + displayAddress + "] " + walletInfo.name);
+        }
+        filterList();
+        ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
+
+    }
+
+
+    boolean isMainNet() {
+        return tbMainNet.isChecked();
+    }
+
+    void setMainNet(boolean mainnet) {
+        tbMainNet.setChecked(mainnet);
+    }
+
+    String getDaemon() {
+        return etDaemonAddress.getText().toString();
+    }
+
+    void setDaemon(String address) {
+        etDaemonAddress.setText(address);
+    }
+
+    private static final String PREF_DAEMON_TESTNET = "daemon_testnet";
+    private static final String PREF_DAEMON_MAINNET = "daemon_mainnet";
+    private static final String PREF_MAINNET = "mainnet";
+
+    private String daemonTestNet;
+    private String daemonMainNet;
+
+    void loadPrefs() {
+        SharedPreferences sharedPref = activityCallback.getPrefs();
+
+        boolean mainnet = sharedPref.getBoolean(PREF_MAINNET, false);
+        daemonMainNet = sharedPref.getString(PREF_DAEMON_MAINNET, "localhost:18081");
+        daemonTestNet = sharedPref.getString(PREF_DAEMON_TESTNET, "localhost:28081");
+
+        setMainNet(mainnet);
+        if (mainnet) {
+            setDaemon(daemonMainNet);
+        } else {
+            setDaemon(daemonTestNet);
+        }
+    }
+
+    void savePrefs(boolean usePreviousState) {
+        // save the daemon address for the net
+        boolean mainnet = isMainNet() ^ usePreviousState;
+        String daemon = getDaemon();
+        if (mainnet) {
+            daemonMainNet = daemon;
+        } else {
+            daemonTestNet = daemon;
+        }
+
+        SharedPreferences sharedPref = activityCallback.getPrefs();
+        SharedPreferences.Editor editor = sharedPref.edit();
+        editor.putBoolean(PREF_MAINNET, mainnet);
+        editor.putString(PREF_DAEMON_MAINNET, daemonMainNet);
+        editor.putString(PREF_DAEMON_TESTNET, daemonTestNet);
+        editor.apply();
+    }
+
+    private boolean checkAndSetWalletDaemon(String daemonAddress, boolean testnet) {
+        String d[] = daemonAddress.split(":");
+        if (d.length > 2) return false;
+        if (d.length < 1) return false;
+        String host = d[0];
+        int port;
+        if (d.length == 2) {
+            try {
+                port = Integer.parseInt(d[1]);
+            } catch (NumberFormatException ex) {
+                return false;
+            }
+        } else {
+            port = (testnet ? 28081 : 18081);
+        }
+//        if (android.os.Build.VERSION.SDK_INT > 9) {
+        StrictMode.ThreadPolicy prevPolicy = StrictMode.getThreadPolicy();
+        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder(prevPolicy).permitNetwork().build();
+        StrictMode.setThreadPolicy(policy);
+        Socket socket = new Socket();
+        long a = new Date().getTime();
+        try {
+            socket.connect(new InetSocketAddress(host, port), LoginActivity.DAEMON_TIMEOUT);
+            socket.close();
+        } catch (IOException ex) {
+            Log.d(TAG, "Cannot reach daemon " + host + ":" + port + " because " + ex.getLocalizedMessage());
+            return false;
+        } finally {
+            StrictMode.setThreadPolicy(prevPolicy);
+        }
+        long b = new Date().getTime();
+        Log.d(TAG, "Daemon is " + (b - a) + "ms away.");
+
+        WalletManager mgr = WalletManager.getInstance();
+        mgr.setDaemon(daemonAddress, testnet);
+        int version = mgr.getDaemonVersion();
+        Log.d(TAG, "Daemon is v" + version);
+        return (version >= WalletActivity.MIN_DAEMON_VERSION);
+    }
+}

app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java

@@ -35,6 +35,8 @@ public class WalletActivity extends Activity implements WalletFragment.WalletFra
         WalletService.Observer {
     private static final String TAG = "WalletActivity";
 
+    static final int MIN_DAEMON_VERSION = 65544;
+
     public static final String REQUEST_ID = "id";
     public static final String REQUEST_PW = "pw";
 
@@ -283,7 +285,7 @@ public class WalletActivity extends Activity implements WalletFragment.WalletFra
 
     @Override
     public void onProgress(final String text) {
-        Log.d(TAG, "PROGRESS: " + text);
+        //Log.d(TAG, "PROGRESS: " + text);
         // TODO check which fragment is loaded
         final WalletFragment walletFragment = (WalletFragment)
                 getFragmentManager().findFragmentById(R.id.fragment_container);

app/src/main/res/layout/login_activity.xml

@@ -0,0 +1,4 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/fragment_container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" />