Add UnreachableActivity for when the server cannot be reached.

app/src/main/AndroidManifest.xml

@@ -66,7 +66,7 @@
             android:name="org.adrianvictor.geleia.views.shortcuts.AppShortcutLauncherActivity"
             android:launchMode="singleInstance"
             android:theme="@android:style/Theme.Translucent.NoTitleBar" />
-
+        <activity android:name="org.adrianvictor.geleia.activities.UnreachableActivity" />
         <service android:name="org.adrianvictor.geleia.service.DownloadService" />
         <service android:name="org.adrianvictor.geleia.service.LoginService" />
         <service android:name="org.adrianvictor.geleia.service.MusicService" />

app/src/main/java/org/adrianvictor/geleia/App.java

@@ -40,7 +40,7 @@ public class App extends Application {
         database = createDatabase(this);
         apiClient = createApiClient(this);
 
-        if (database.userDao().getUsers().size() == 0) {
+        if (database.userDao().getUsers().isEmpty()) {
             PreferenceUtil.getInstance(this).setServer(null);
             PreferenceUtil.getInstance(this).setUser(null);
         }
@@ -76,6 +76,7 @@ public class App extends Application {
         IDevice device = new AndroidDevice(deviceId, deviceName);
         EventListener eventListener = new EventListener();
 
+
         return new ApiClient(httpClient, logger, server, appName, appVersion, device, eventListener);
     }
 

app/src/main/java/org/adrianvictor/geleia/activities/MainActivity.java

@@ -1,9 +1,12 @@
 package org.adrianvictor.geleia.activities;
 
+import static org.adrianvictor.geleia.adapter.CustomFragmentStatePagerAdapter.TAG;
+
 import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -13,10 +16,12 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 import androidx.drawerlayout.widget.DrawerLayout;
+import androidx.lifecycle.Lifecycle;
 
 import com.afollestad.materialcab.attached.AttachedCab;
 import com.afollestad.materialcab.attached.AttachedCabKt;
 import org.adrianvictor.geleia.activities.base.AbsMusicContentActivity;
+import org.adrianvictor.geleia.fragments.OfflineFragment;
 import org.adrianvictor.geleia.interfaces.CabHolder;
 import org.adrianvictor.geleia.util.PreferenceUtil;
 import org.adrianvictor.geleia.util.ThemeUtil;
@@ -42,6 +47,7 @@ public class MainActivity extends AbsMusicContentActivity implements CabHolder {
     private ActivityMainContentBinding contentBinding;
     private NavigationDrawerHeaderBinding navigationBinding;
     private boolean onLogout;
+    private boolean pendingShowOffline = false;
 
     @Nullable
     private AttachedCab cab;
@@ -97,6 +103,24 @@ public class MainActivity extends AbsMusicContentActivity implements CabHolder {
         });
     }
 
+    @Override
+    public void onStateOffline() {
+        Log.d(TAG, "onStateOffline() foi chamado.");
+        Menu menu = binding.navigationView.getMenu();
+        menu.clear();
+
+        menu.add(R.id.navigation_drawer_menu_category_other, R.id.nav_settings, menu.size(), R.string.action_settings);
+        menu.getItem(menu.size() - 1).setIcon(R.drawable.ic_settings_white_24dp);
+        menu.add(R.id.navigation_drawer_menu_category_other, R.id.nav_about, menu.size(), R.string.action_about);
+        menu.getItem(menu.size() - 1).setIcon(R.drawable.ic_info_outline_white_24dp);
+        menu.add(R.id.navigation_drawer_menu_category_other, R.id.nav_logout, menu.size(), R.string.logout);
+        menu.getItem(menu.size() - 1).setIcon(R.drawable.ic_exit_to_app_white_48dp);
+
+        setUpDrawerLayout();
+
+        pendingShowOffline = true;
+    }
+
     @Override
     public void onPause() {
         super.onPause();
@@ -108,6 +132,16 @@ public class MainActivity extends AbsMusicContentActivity implements CabHolder {
         }
     }
 
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        if (pendingShowOffline) {
+            setCurrentFragment(OfflineFragment.newInstance());
+            pendingShowOffline = false;
+        }
+    }
+
     private void setCurrentFragment(Fragment fragment) {
         getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, fragment, null).commit();
     }

app/src/main/java/org/adrianvictor/geleia/activities/SearchActivity.java

@@ -93,6 +93,9 @@ public class SearchActivity extends AbsMusicContentActivity implements SearchVie
     public void onStateOnline() {
     }
 
+    @Override
+    public void onStateOffline() {}
+
     private void setUpToolBar() {
         binding.toolbar.setBackgroundColor(PreferenceUtil.getInstance(this).getPrimaryColor());
         setSupportActionBar(binding.toolbar);

app/src/main/java/org/adrianvictor/geleia/activities/SplashActivity.java

@@ -1,8 +1,13 @@
 package org.adrianvictor.geleia.activities;
 
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Build;
 import android.os.Bundle;
-import android.os.Handler;
+
+import androidx.annotation.NonNull;
 
 import org.adrianvictor.geleia.App;
 import org.adrianvictor.geleia.R;
@@ -15,6 +20,27 @@ import org.adrianvictor.geleia.util.PreferenceUtil;
 import java.util.List;
 
 public class SplashActivity extends AbsBaseActivity {
+
+    private final BroadcastReceiver receiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, @NonNull Intent intent) {
+            if (intent.getAction() == null) {
+                return;
+            }
+
+            switch (intent.getAction()) {
+                case LoginService.STATE_ONLINE:
+                    NavigationUtil.startMain(context);
+                    finish();
+                    break;
+                case LoginService.STATE_OFFLINE:
+                    NavigationUtil.startUnreachable(context);
+                    finish();
+                    break;
+            }
+        }
+    };
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -25,6 +51,7 @@ public class SplashActivity extends AbsBaseActivity {
     @Override
     public void onPause() {
         super.onPause();
+        unregisterReceiver(receiver);
         overridePendingTransition(0, R.anim.fade_delay);
     }
 
@@ -32,16 +59,27 @@ public class SplashActivity extends AbsBaseActivity {
     protected void onResume() {
         super.onResume();
 
+        final IntentFilter filter = new IntentFilter();
+        filter.addAction(LoginService.STATE_ONLINE);
+        filter.addAction(LoginService.STATE_OFFLINE);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            registerReceiver(receiver, filter, Context.RECEIVER_NOT_EXPORTED);
+        } else {
+            registerReceiver(receiver, filter);
+        }
+
         User user = App.getDatabase().userDao().getUser(PreferenceUtil.getInstance(this).getUser());
         List<User> available = App.getDatabase().userDao().getUsers();
 
-        if (user == null && available.size() != 0) {
+        if (user == null && !available.isEmpty()) {
             NavigationUtil.startSelect(this);
+            finish();
         } else if (user == null) {
             NavigationUtil.startLogin(this);
+            finish();
         } else {
             startService(new Intent(this, LoginService.class));
-            new Handler().postDelayed(() -> NavigationUtil.startMain(this), 1000);
         }
     }
 }

app/src/main/java/org/adrianvictor/geleia/activities/UnreachableActivity.java

@@ -0,0 +1,21 @@
+package org.adrianvictor.geleia.activities;
+
+import android.os.Bundle;
+import android.view.View;
+
+import org.adrianvictor.geleia.R;
+import org.adrianvictor.geleia.activities.base.AbsThemeActivity;
+import org.adrianvictor.geleia.util.NavigationUtil;
+
+public class UnreachableActivity extends AbsThemeActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_unreachable);
+    }
+
+    public void onSelectClick(View view) {
+        NavigationUtil.startSelect(this);
+    }
+}

app/src/main/java/org/adrianvictor/geleia/activities/base/AbsBaseActivity.java

@@ -59,7 +59,7 @@ public abstract class AbsBaseActivity extends AbsThemeActivity {
                 .setPositiveButton(R.string.disable, (dialog, id) -> requestBatteryOptimization());
 
             new Handler().postDelayed(builder::show, 2000);
-        } else if (permissions.size() != 0 && ActivityCompat.shouldShowRequestPermissionRationale(this, permissions.get(0))) {
+        } else if (!permissions.isEmpty() && ActivityCompat.shouldShowRequestPermissionRationale(this, permissions.get(0))) {
             builder.setMessage(getPermissionMessage())
                 .setTitle(R.string.permissions_denied)
                 .setPositiveButton(R.string.action_grant, (dialog, id) -> requestPermissions());

app/src/main/java/org/adrianvictor/geleia/activities/base/AbsMusicContentActivity.java

@@ -1,14 +1,19 @@
 package org.adrianvictor.geleia.activities.base;
 
+import static org.adrianvictor.geleia.adapter.CustomFragmentStatePagerAdapter.TAG;
+
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.os.Build;
 import android.os.Bundle;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 
 import org.adrianvictor.geleia.App;
+import org.adrianvictor.geleia.fragments.OfflineFragment;
 import org.adrianvictor.geleia.interfaces.StateListener;
 import org.adrianvictor.geleia.service.LoginService;
 import org.adrianvictor.geleia.util.NavigationUtil;
@@ -24,7 +29,7 @@ public abstract class AbsMusicContentActivity extends AbsMusicPanelActivity impl
                     onStateOnline();
                     break;
                 case LoginService.STATE_OFFLINE:
-                    NavigationUtil.startLogin(context);
+                    NavigationUtil.startSelect(context);
                     break;
             }
         }
@@ -39,7 +44,11 @@ public abstract class AbsMusicContentActivity extends AbsMusicPanelActivity impl
         filter.addAction(LoginService.STATE_ONLINE);
         filter.addAction(LoginService.STATE_OFFLINE);
 
-        registerReceiver(receiver, filter);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            registerReceiver(receiver, filter, Context.RECEIVER_NOT_EXPORTED);
+        } else {
+            registerReceiver(receiver, filter);
+        }
 
         if (App.getApiClient() == null) {
             startService(new Intent(this, LoginService.class));
@@ -51,24 +60,14 @@ public abstract class AbsMusicContentActivity extends AbsMusicPanelActivity impl
     @Override
     protected void onResume() {
         super.onResume();
-
-        if (App.getApiClient() == null) {
-            startService(new Intent(this, LoginService.class));
-        }
     }
 
     @Override
     protected void onDestroy() {
         unregisterReceiver(receiver);
-
         super.onDestroy();
     }
 
     @Override
-    public void onStatePolling() {
+    public void onStatePolling() {}
-    }
-
-    @Override
-    public void onStateOffline() {
-    }
 }

app/src/main/java/org/adrianvictor/geleia/activities/details/AlbumDetailActivity.java

@@ -74,6 +74,11 @@ public class AlbumDetailActivity extends AbsMusicContentActivity implements Pale
         });
     }
 
+    @Override
+    public void onStateOffline() {
+
+    }
+
     @Override
     public void onOffsetChanged (AppBarLayout appBarLayout, int verticalOffset) {
         float headerAlpha = Math.max(0, Math.min(1, 1 + (2 * (float) verticalOffset / headerViewHeight)));
@@ -231,6 +236,6 @@ public class AlbumDetailActivity extends AbsMusicContentActivity implements Pale
         binding.durationText.setText(MusicUtil.getReadableDurationString(MusicUtil.getTotalDuration(this, album.songs)));
         binding.albumYearText.setText(MusicUtil.getYearString(album.year));
 
-        if (album.songs.size() != 0) adapter.swapDataSet(album.songs);
+        if (!album.songs.isEmpty()) adapter.swapDataSet(album.songs);
     }
 }

app/src/main/java/org/adrianvictor/geleia/activities/details/ArtistDetailActivity.java

@@ -87,6 +87,11 @@ public class ArtistDetailActivity extends AbsMusicContentActivity implements Pal
         });
     }
 
+    @Override
+    public void onStateOffline() {
+
+    }
+
     @Override
     public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
         float headerAlpha = Math.max(0, Math.min(1, 1 + (2 * (float) verticalOffset / headerViewHeight)));
@@ -258,7 +263,7 @@ public class ArtistDetailActivity extends AbsMusicContentActivity implements Pal
         binding.albumCountText.setText(MusicUtil.getAlbumCountString(this, artist.albums.size()));
         binding.durationText.setText(MusicUtil.getReadableDurationString(MusicUtil.getTotalDuration(this, artist.songs)));
 
-        if (artist.songs.size() != 0) songAdapter.swapDataSet(artist.songs);
+        if (!artist.songs.isEmpty()) songAdapter.swapDataSet(artist.songs);
-        if (artist.albums.size() != 0) albumAdapter.swapDataSet(artist.albums);
+        if (!artist.albums.isEmpty()) albumAdapter.swapDataSet(artist.albums);
     }
 }

app/src/main/java/org/adrianvictor/geleia/activities/details/GenreDetailActivity.java

@@ -59,6 +59,11 @@ public class GenreDetailActivity extends AbsMusicContentActivity implements CabH
         });
     }
 
+    @Override
+    public void onStateOffline() {
+
+    }
+
     @Override
     protected View createContentView() {
         binding = ActivityGenreDetailBinding.inflate(getLayoutInflater());

app/src/main/java/org/adrianvictor/geleia/activities/details/PlaylistDetailActivity.java

@@ -71,6 +71,11 @@ public class PlaylistDetailActivity extends AbsMusicContentActivity implements C
         });
     }
 
+    @Override
+    public void onStateOffline() {
+
+    }
+
     @Override
     protected View createContentView() {
         binding = ActivityPlaylistDetailBinding.inflate(getLayoutInflater());

app/src/main/java/org/adrianvictor/geleia/adapter/CustomFragmentStatePagerAdapter.java

@@ -180,7 +180,7 @@ public abstract class CustomFragmentStatePagerAdapter extends PagerAdapter {
     @Override
     public Parcelable saveState() {
         Bundle state = null;
-        if (mSavedState.size() > 0) {
+        if (!mSavedState.isEmpty()) {
             state = new Bundle();
             Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()];
             mSavedState.toArray(fss);

app/src/main/java/org/adrianvictor/geleia/dialogs/SongShareDialog.java

@@ -31,7 +31,7 @@ public class SongShareDialog extends DialogFragment {
         final String currentlyListening = getString(R.string.currently_listening_to_x_by_x, song.title, song.artistName);
         return new MaterialDialog.Builder(requireActivity())
                 .title(R.string.what_do_you_want_to_share)
-                .items(getString(R.string.the_audio_file), "\u201C" + currentlyListening + "\u201D")
+                .items(getString(R.string.the_audio_file), "“" + currentlyListening + "”")
                 .itemsCallback((materialDialog, view, i, charSequence) -> {
                     switch (i) {
                         case 0:

app/src/main/java/org/adrianvictor/geleia/fragments/OfflineFragment.java

@@ -0,0 +1,25 @@
+package org.adrianvictor.geleia.fragments;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+import org.adrianvictor.geleia.R;
+
+public class OfflineFragment extends Fragment {
+    public static OfflineFragment newInstance() {
+        return new OfflineFragment();
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_offline, container, false);
+    }
+}

app/src/main/java/org/adrianvictor/geleia/helper/MusicPlayerRemote.java

@@ -273,7 +273,7 @@ public class MusicPlayerRemote {
 
     public static boolean playNext(Song song) {
         if (musicService != null && musicService.queueManager != null) {
-            if (getPlayingQueue().size() > 0) {
+            if (!getPlayingQueue().isEmpty()) {
                 musicService.queueManager.addSong(getPosition() + 1, song);
             } else {
                 List<Song> queue = new ArrayList<>();
@@ -290,7 +290,7 @@ public class MusicPlayerRemote {
 
     public static boolean playNext(@NonNull List<Song> songs) {
         if (musicService != null && musicService.queueManager != null) {
-            if (getPlayingQueue().size() > 0) {
+            if (!getPlayingQueue().isEmpty()) {
                 musicService.queueManager.addSongs(getPosition() + 1, songs);
             } else {
                 openQueue(songs, 0, false);
@@ -306,7 +306,7 @@ public class MusicPlayerRemote {
 
     public static boolean enqueue(Song song) {
         if (musicService != null && musicService.queueManager != null) {
-            if (getPlayingQueue().size() > 0) {
+            if (!getPlayingQueue().isEmpty()) {
                 musicService.queueManager.addSong(song);
             } else {
                 List<Song> queue = new ArrayList<>();
@@ -323,7 +323,7 @@ public class MusicPlayerRemote {
 
     public static boolean enqueue(@NonNull List<Song> songs) {
         if (musicService != null && musicService.queueManager != null) {
-            if (getPlayingQueue().size() > 0) {
+            if (!getPlayingQueue().isEmpty()) {
                 musicService.queueManager.addSongs(songs);
             } else {
                 openQueue(songs, 0, false);

app/src/main/java/org/adrianvictor/geleia/model/Album.java

@@ -29,10 +29,10 @@ public class Album implements Parcelable {
         this.title = itemDto.getName();
         this.year = itemDto.getProductionYear() != null ? itemDto.getProductionYear() : 0;
 
-        if (itemDto.getAlbumArtists().size() != 0) {
+        if (!itemDto.getAlbumArtists().isEmpty()) {
             this.artistId = itemDto.getAlbumArtists().get(0).getId();
             this.artistName = itemDto.getAlbumArtists().get(0).getName();
-        } else if (itemDto.getArtistItems().size() != 0) {
+        } else if (!itemDto.getArtistItems().isEmpty()) {
             this.artistId = itemDto.getArtistItems().get(0).getId();
             this.artistName = itemDto.getArtistItems().get(0).getName();
         }

app/src/main/java/org/adrianvictor/geleia/model/Song.java

@@ -67,10 +67,10 @@ public class Song implements Parcelable {
         this.albumId = itemDto.getAlbumId();
         this.albumName = itemDto.getAlbum();
 
-        if (itemDto.getArtistItems().size() != 0) {
+        if (!itemDto.getArtistItems().isEmpty()) {
             this.artistId = itemDto.getArtistItems().get(0).getId();
             this.artistName = itemDto.getArtistItems().get(0).getName();
-        } else if (itemDto.getAlbumArtists().size() != 0) {
+        } else if (!itemDto.getAlbumArtists().isEmpty()) {
             this.artistId = itemDto.getAlbumArtists().get(0).getId();
             this.artistName = itemDto.getAlbumArtists().get(0).getName();
         }
@@ -93,7 +93,7 @@ public class Song implements Parcelable {
 
             this.supportsTranscoding = source.getSupportsTranscoding();
 
-            if (source.getMediaStreams() != null && source.getMediaStreams().size() != 0) {
+            if (source.getMediaStreams() != null && !source.getMediaStreams().isEmpty()) {
                 MediaStream stream = source.getMediaStreams().get(0);
 
                 this.codec = stream.getCodec();

app/src/main/java/org/adrianvictor/geleia/service/LoginService.java

@@ -46,6 +46,21 @@ public class LoginService extends Service {
 
         if (user == null) {
             Toast.makeText(this, context.getResources().getString(R.string.error_unexpected), Toast.LENGTH_SHORT).show();
+            sendBroadcast(new Intent(STATE_OFFLINE));
+            return;
+        }
+
+        if (App.getApiClient() == null) {
+            try {
+                App.createApiClient(context);
+            } catch (Exception e) {
+                sendBroadcast(new Intent(STATE_OFFLINE));
+                return;
+            }
+        }
+
+        if (App.getApiClient() == null) {
+            sendBroadcast(new Intent(STATE_OFFLINE));
             return;
         }
 

app/src/main/java/org/adrianvictor/geleia/service/notifications/DownloadNotification.java

@@ -83,7 +83,7 @@ public class DownloadNotification {
             songs.clear();
         }
 
-        if (songs.size() != 0) {
+        if (!songs.isEmpty()) {
             return;
         }
 

app/src/main/java/org/adrianvictor/geleia/util/MusicUtil.java

@@ -50,7 +50,7 @@ public class MusicUtil {
         List<Codec> codecs = preferenceUtil.getDirectPlayCodecs();
         Stream<String> values = codecs.stream().map(codec -> codec.value);
 
-        if (codecs.size() != 0) {
+        if (!codecs.isEmpty()) {
             builder.append("&Container=").append(values.collect(Collectors.joining(",")));
         }
 
@@ -111,7 +111,7 @@ public class MusicUtil {
 
     @NonNull
     public static String getArtistInfoString(@NonNull final Context context, @NonNull final Artist artist) {
-        return artist.genres.size() != 0 ? artist.genres.get(0).name : "";
+        return !artist.genres.isEmpty() ? artist.genres.get(0).name : "";
     }
 
     @NonNull

app/src/main/java/org/adrianvictor/geleia/util/NavigationUtil.java

@@ -12,6 +12,7 @@ import androidx.core.util.Pair;
 import org.adrianvictor.geleia.activities.LoginActivity;
 import org.adrianvictor.geleia.activities.MainActivity;
 import org.adrianvictor.geleia.activities.SelectActivity;
+import org.adrianvictor.geleia.activities.UnreachableActivity;
 import org.adrianvictor.geleia.model.Album;
 import org.adrianvictor.geleia.model.Artist;
 import org.adrianvictor.geleia.model.Genre;
@@ -61,6 +62,13 @@ public class NavigationUtil {
         context.startActivity(intent);
     }
 
+    public static void startUnreachable(Context context) {
+        final Intent intent = new Intent(context, UnreachableActivity.class);
+
+        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
+        context.startActivity(intent);
+    }
+
     public static void startSelect(Context context) {
         final Intent intent = new Intent(context, SelectActivity.class);
 

app/src/main/java/org/adrianvictor/geleia/util/PlaylistUtil.java

@@ -48,7 +48,7 @@ public class PlaylistUtil {
         PlaylistCreationRequest request = new PlaylistCreationRequest();
         request.setUserId(App.getApiClient().getCurrentUserId());
         request.setName(name);
-        if (ids.size() != 0) request.setItemIdList(ids);
+        if (!ids.isEmpty()) request.setItemIdList(ids);
         App.getApiClient().CreatePlaylist(request, new Response<>());
     }
 

app/src/main/java/org/adrianvictor/geleia/util/PreferenceUtil.java

@@ -448,7 +448,6 @@ public final class PreferenceUtil {
         }).collect(Collectors.toList());
     }
 
-    @SuppressWarnings("SimplifyStreamApiCallChains")
     public void setCategories(List<Category> categories) {
         List<String> values = categories.stream().map(category -> {
             return category.select ? category.toString() : category.toString().toLowerCase();

app/src/main/java/org/adrianvictor/geleia/views/shortcuts/DynamicShortcutManager.java

@@ -36,7 +36,7 @@ public class DynamicShortcutManager {
     }
 
     public void initDynamicShortcuts() {
-        if (shortcutManager.getDynamicShortcuts().size() == 0) {
+        if (shortcutManager.getDynamicShortcuts().isEmpty()) {
             shortcutManager.setDynamicShortcuts(getDefaultShortcuts());
         }
     }

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

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="org.adrianvictor.geleia.activities.UnreachableActivity">
+
+    <include layout="@layout/status_bar" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_margin="16dp"
+        android:clipToPadding="false"
+        android:isScrollContainer="true">
+
+        <include layout="@layout/fragment_offline" />
+
+    </ScrollView>
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="30dp"
+        android:layout_marginEnd="30dp"
+        android:layout_marginBottom="16dp"
+        android:onClick="onSelectClick"
+        android:text="@string/change_server" />
+</LinearLayout>

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

@@ -0,0 +1,40 @@
+<RelativeLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center"
+    android:layout_margin="32dp"
+    tools:context=".fragments.OfflineFragment">
+
+    <TextView
+        android:id="@+id/offline_icon"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_marginTop="16dp"
+        android:text="@string/sad_face"
+        android:textAppearance="@style/TextAppearance.AppCompat.Display3" />
+
+    <TextView
+        android:id="@+id/error_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/offline_icon"
+        android:layout_centerHorizontal="true"
+        android:layout_marginTop="16dp"
+        android:text="@string/oops"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large" />
+
+    <TextView
+        android:id="@+id/error_messsage"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/error_title"
+        android:layout_centerHorizontal="true"
+        android:layout_marginTop="16dp"
+        android:text="@string/server_is_unreachable"
+        android:textAlignment="center"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
+
+</RelativeLayout>

app/src/main/res/values/strings.xml

@@ -236,5 +236,10 @@
     <string name="dkanada_summary">Forking Phonograph and making Gelli</string>
     <string name="adrianvictor">Adrian Victor</string>
     <string name="error_notification_title">An error occurred in Jamfish.</string>
+    <string name="offline">You are offline.</string>
+    <string name="change_server">Change server</string>
+    <string name="oops">Oops! I did it again...</string>
+    <string name="sad_face">;(</string>
+    <string name="server_is_unreachable">Sorry, but we couldn\'t reach this server right now.</string>
 
 </resources>