Fix compatibility with Android 4.4.

The app was pretty broken on API 19, fixes:
- Remove SelectActivity card background because API 19 does not support XML SVG as bg
- Add simple folder browser for APIs without SAF
- Add simplified version of download notification
- Downgrade and replace incompatible libraries to enable SSL 1.2 on older Android versions

app/build.gradle

@@ -13,7 +13,9 @@ android {
         versionCode 2
         versionName '1.4.1'
 
+        // for SDK < 19
         multiDexEnabled true
+
         vectorDrawables {
             useSupportLibrary true
         }
@@ -105,8 +107,9 @@ dependencies {
     implementation 'com.android.support:multidex:1.0.3'
     implementation 'com.mlegy.redscreenofdeath:red-screen-of-death:0.1.3'
 
-    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    // old version of retrofit to work with api < 21
-    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.6.4'
+    implementation 'com.squareup.retrofit2:converter-gson:2.6.0'
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'
 
@@ -117,4 +120,10 @@ dependencies {
     implementation 'com.github.bumptech.glide:annotations:4.12.0'
     implementation 'com.github.bumptech.glide:glide:4.12.0'
     implementation 'com.github.bumptech.glide:okhttp3-integration:4.12.0'
+
+    // for supporting legacy android versions:
+    implementation('com.squareup.okhttp3:okhttp:3.12.13')
+
+    implementation "androidx.multidex:multidex:2.0.1"
+    implementation 'org.conscrypt:conscrypt-android:2.5.2'
 }

app/src/main/AndroidManifest.xml

@@ -51,6 +51,7 @@
         <activity
             android:name="org.adrianvictor.geleia.activities.SettingsActivity"
             android:label="@string/action_settings" />
+        <activity android:name="org.adrianvictor.geleia.activities.DirectoryPickerActivity"/>
         <activity
             android:name="org.adrianvictor.geleia.activities.AboutActivity"
             android:label="@string/action_about" />
@@ -138,6 +139,12 @@
                 android:resource="@xml/provider_paths" />
         </provider>
 
+        <provider
+            android:name="androidx.startup.InitializationProvider"
+            android:authorities="${applicationId}.androidx-startup"
+            android:exported="false"
+            tools:node="remove" />
+
     </application>
 
 </manifest>

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

@@ -6,6 +6,9 @@ import android.content.Context;
 import android.os.Build;
 import android.provider.Settings;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.multidex.MultiDexApplication;
 import androidx.room.Room;
 
 import org.adrianvictor.geleia.database.JellyDatabase;
@@ -14,6 +17,7 @@ import org.adrianvictor.geleia.util.PreferenceUtil;
 import org.adrianvictor.geleia.views.shortcuts.DynamicShortcutManager;
 import com.melegy.redscreenofdeath.RedScreenOfDeath;
 
+import org.conscrypt.Conscrypt;
 import org.jellyfin.apiclient.interaction.AndroidDevice;
 import org.jellyfin.apiclient.interaction.ApiClient;
 import org.jellyfin.apiclient.interaction.VolleyHttpClient;
@@ -22,7 +26,16 @@ import org.jellyfin.apiclient.interaction.http.IAsyncHttpClient;
 import org.jellyfin.apiclient.logging.AndroidLogger;
 import org.jellyfin.apiclient.logging.ILogger;
 
-public class App extends Application {
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.Registry;
+import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader;
+import com.bumptech.glide.load.model.GlideUrl;
+import java.io.InputStream;
+import okhttp3.OkHttpClient;
+
+import java.security.Security;
+
+public class App extends MultiDexApplication {
     private static App app;
 
     private static JellyDatabase database;
@@ -30,8 +43,14 @@ public class App extends Application {
 
     @Override
     public void onCreate() {
+        // Initializing stuff for older Android APIs compatibility
+        Security.insertProviderAt(Conscrypt.newProvider(), 1); // To have SSL 1.2 on API < 19
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true); // To load vectors on API < 19
+
         super.onCreate();
 
+        initializeGlide(this);
+
         if (BuildConfig.DEBUG) {
             RedScreenOfDeath.init(this);
         }
@@ -91,4 +110,15 @@ public class App extends Application {
     public static App getInstance() {
         return app;
     }
+
+    private void initializeGlide(@NonNull Context context) {
+        // This OkHttpClient is now created with Conscrypt as the SSL provider.
+        OkHttpClient client = new OkHttpClient.Builder().build();
+
+        // Manually create and register Glide's OkHttp component.
+        OkHttpUrlLoader.Factory factory = new OkHttpUrlLoader.Factory(client);
+
+        // Ensure Glide is initialized and then register the component.
+        Glide.get(context).getRegistry().replace(GlideUrl.class, InputStream.class, factory);
+    }
 }

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

@@ -0,0 +1,127 @@
+package org.adrianvictor.geleia.activities;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Environment;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class DirectoryPickerActivity extends AppCompatActivity {
+
+    public static final String EXTRA_RESULT_PATH = "result_path";
+
+    private File rootDir;
+    private File currentDir;
+
+    private ArrayAdapter<File> adapter;
+    private TextView pathView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        rootDir = Environment.getExternalStorageDirectory();
+        currentDir = rootDir;
+
+        LinearLayout layout = new LinearLayout(this);
+        layout.setOrientation(LinearLayout.VERTICAL);
+
+        pathView = new TextView(this);
+        pathView.setPadding(24, 24, 24, 24);
+
+        ListView listView = new ListView(this);
+
+        Button selectButton = new Button(this);
+        selectButton.setText("Select this folder");
+
+        layout.addView(pathView);
+        layout.addView(listView, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT, 0, 1f));
+        layout.addView(selectButton);
+
+        setContentView(layout);
+
+        adapter = new ArrayAdapter<File>(this,
+                android.R.layout.simple_list_item_1, new ArrayList<>()) {
+            @Override
+            public View getView(int position, View convertView, ViewGroup parent) {
+                TextView tv = (TextView) super.getView(position, convertView, parent);
+                File f = getItem(position);
+
+                File parentFile = currentDir.getParentFile();
+
+                if (parentFile != null && parentFile.equals(f)) {
+                    tv.setText("..");
+                } else {
+                    tv.setText(f.getName());
+                }
+
+                return tv;
+            }
+        };
+
+        listView.setAdapter(adapter);
+
+        listView.setOnItemClickListener((p, v, pos, id) -> {
+            File dir = adapter.getItem(pos);
+            if (dir != null) openDir(dir);
+        });
+
+        selectButton.setOnClickListener(v -> {
+            Intent result = new Intent();
+            result.putExtra(EXTRA_RESULT_PATH, currentDir.getAbsolutePath());
+            setResult(RESULT_OK, result);
+            finish();
+        });
+
+        openDir(rootDir);
+    }
+
+    private void openDir(File dir) {
+        if (!dir.exists() || !dir.canRead()) return;
+
+        File[] dirs = dir.listFiles(f ->
+                f.isDirectory() && f.canRead()
+        );
+
+        if (dirs == null) return;
+
+        adapter.clear();
+
+        File parent = dir.getParentFile();
+        if (parent != null && parent.getAbsolutePath().startsWith(rootDir.getAbsolutePath())) {
+            adapter.add(parent);
+        }
+
+        Arrays.sort(dirs);
+
+        for (File f : dirs) {
+            adapter.add(f);
+        }
+
+        currentDir = dir;
+        pathView.setText(dir.getAbsolutePath());
+    }
+
+    @Override
+    public void onBackPressed() {
+        File parent = currentDir.getParentFile();
+        if (parent != null &&
+                parent.getAbsolutePath().startsWith(rootDir.getAbsolutePath())) {
+            openDir(parent);
+        } else {
+            super.onBackPressed();
+        }
+    }
+}

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

@@ -51,6 +51,7 @@ public class SettingsActivity extends AbsBaseActivity {
     public static class SettingsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {
 
         private ActivityResultLauncher<Intent> dirPickerLauncher;
+        private ActivityResultLauncher<Intent> legacyDirPickerLauncher;
 
         @Override
         public void onCreate(@Nullable Bundle savedInstanceState) {
@@ -71,6 +72,25 @@ public class SettingsActivity extends AbsBaseActivity {
                             }
                         }
                     });
+
+            legacyDirPickerLauncher = registerForActivityResult(
+                    new ActivityResultContracts.StartActivityForResult(),
+                    result -> {
+                        if (result.getResultCode() == RESULT_OK && result.getData() != null) {
+                            String path = result.getData().getStringExtra(
+                                    DirectoryPickerActivity.EXTRA_RESULT_PATH
+                            );
+
+                            if (path != null) {
+                                SharedPreferences.Editor editor =
+                                        PreferenceManager.getDefaultSharedPreferences(requireContext()).edit();
+                                editor.putString(PreferenceUtil.LOCATION_DOWNLOAD, path);
+                                editor.apply();
+                                invalidateSettings();
+                            }
+                        }
+                    }
+            );
         }
 
         @Override
@@ -161,8 +181,13 @@ public class SettingsActivity extends AbsBaseActivity {
         }
 
         private void openDirectoryPicker() {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                 Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
                 dirPickerLauncher.launch(intent);
+            } else {
+                Intent intent = new Intent(requireContext(), DirectoryPickerActivity.class);
+                legacyDirPickerLauncher.launch(intent);
+            }
         }
 
         @Override

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

@@ -127,8 +127,11 @@ public abstract class AbsBaseActivity extends AbsThemeActivity {
     private boolean checkBatteryOptimization() {
         String packageName = getPackageName();
         PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
-
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
             return pm.isIgnoringBatteryOptimizations(packageName);
+        } else {
+            return true;
+        }
     }
 
     @RequiresApi(api = Build.VERSION_CODES.M)
@@ -138,11 +141,13 @@ public abstract class AbsBaseActivity extends AbsThemeActivity {
 
     @RequiresApi(api = Build.VERSION_CODES.M)
     private boolean checkPermissions() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
             for (String permission : permissions) {
                 if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
                     return false;
                 }
             }
+        }
 
         return true;
     }

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

@@ -4,6 +4,8 @@ import android.app.Service;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.IBinder;
+import android.util.Log;
+
 import androidx.documentfile.provider.DocumentFile;
 
 import org.adrianvictor.geleia.App;
@@ -25,6 +27,7 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 public class DownloadService extends Service {
+    public static final String TAG = DownloadService.class.getSimpleName();
     public static final String PACKAGE_NAME = BuildConfig.APPLICATION_ID;
     public static final String ACTION_START = PACKAGE_NAME + ".action.start";
     public static final String ACTION_CANCEL = PACKAGE_NAME + ".action.cancel";
@@ -79,10 +82,10 @@ public class DownloadService extends Service {
 
                 String location = PreferenceUtil.getInstance(App.getInstance()).getLocationDownload();
                 DocumentFile root;
-                if (location.equals(getApplicationContext().getCacheDir().toString())) {
+                if (location.startsWith("content://")) {
-                    root = DocumentFile.fromFile(new File(location));
-                } else {
                     root = DocumentFile.fromTreeUri(this, Uri.parse(location));
+                } else {
+                    root = DocumentFile.fromFile(new File(location));
                 }
 
                 DocumentFile artist = root.findFile(MusicUtil.ascii(song.artistName));
@@ -117,6 +120,7 @@ public class DownloadService extends Service {
                 App.getDatabase().cacheDao().insertCache(new Cache(song));
                 notification.stop(song);
             } catch (Exception e) {
+                Log.e(TAG, "Failed to download song: " + song.title, e);
                 ErrorNotification.show(this, e.getMessage());
             }
         });

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

@@ -1,114 +1,134 @@
 package org.adrianvictor.geleia.service.notifications;
 
+import android.app.Notification;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
+import android.widget.RemoteViews;
 
-import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationCompat;
 
 import org.adrianvictor.geleia.R;
-import org.adrianvictor.geleia.activities.MainActivity;
 import org.adrianvictor.geleia.model.Song;
 import org.adrianvictor.geleia.service.DownloadService;
 
-import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedList;
 import java.util.List;
-import java.util.stream.Collectors;
-
-import static android.content.Context.NOTIFICATION_SERVICE;
 
 public class DownloadNotification {
-    private static final String CHANNEL_ID = DownloadNotification.class.getSimpleName();
+    private static final String CHANNEL_ID = "download_channel";
-    private static final int NOTIFICATION_ID = 2;
+    private final int ID = 2;
-
     private final Context context;
     private final NotificationManager notificationManager;
+    private final List<Song> queue = Collections.synchronizedList(new LinkedList<>());
 
-    private final List<Song> songs;
+    private long totalSize;
-
+    private long downloadedSize;
-    private int current;
+    private int lastPercentage = -1;
-    private int maximum;
 
     public DownloadNotification(Context context) {
-        this.notificationManager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
         this.context = context;
-
+        this.notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
-        this.songs = new ArrayList<>();
-    }
-
-    public synchronized void start(Song song) {
-        this.songs.add(song);
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
         createNotificationChannel();
     }
+
+    private void createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            NotificationChannel channel = new NotificationChannel(
+                    CHANNEL_ID,
+                    context.getString(R.string.download_channel_name),
+                    NotificationManager.IMPORTANCE_LOW
+            );
+            notificationManager.createNotificationChannel(channel);
+        }
     }
 
-    public synchronized void update(int current, int maximum) {
+    public void start(Song song) {
-        this.current += current;
+        queue.add(song);
-        this.maximum += maximum;
+        if (queue.size() == 1) { // This is the first song of a new batch
-
+            totalSize = 0;
-        Intent action = new Intent(context, MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            downloadedSize = 0;
-        PendingIntent clickIntent = PendingIntent.getActivity(context, 0, action, PendingIntent.FLAG_IMMUTABLE);
+            lastPercentage = -1;
-
+            notificationManager.notify(ID, getNotification());
-        Intent cancel = new Intent(context, DownloadService.class).setAction(DownloadService.ACTION_CANCEL);
+        } else if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
-        PendingIntent pendingCancel = PendingIntent.getService(context, 0, cancel, PendingIntent.FLAG_IMMUTABLE);
+            // For KitKat, update for every new song to show correct count.
-
+            notificationManager.notify(ID, getNotification());
-        NotificationCompat.InboxStyle style = new NotificationCompat.InboxStyle();
-        for (Song item : songs.stream().limit(5).collect(Collectors.toList())) {
-            style.addLine(item.title);
         }
+    }
+
+    public void update(long downloaded, long total) {
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
+            return; // No progress updates for KitKat
+        }
+
+        synchronized (this) {
+            totalSize += total;
+            downloadedSize += downloaded;
+
+            int percentage = 0;
+            if (totalSize > 0) {
+                percentage = (int) ((downloadedSize * 100) / totalSize);
+            }
+
+            if (percentage > lastPercentage) {
+                lastPercentage = percentage;
+                notificationManager.notify(ID, getNotification());
+            }
+        }
+    }
+
+    public void stop(Song song) {
+        queue.remove(song);
+        if (queue.isEmpty()) {
+            notificationManager.cancel(ID);
+        } else {
+            // Update notification to show new queue size.
+            // On KitKat, this is the only update after a download finishes.
+            notificationManager.notify(ID, getNotification());
+        }
+    }
+
+    public void cancelAll() {
+        queue.clear();
+        notificationManager.cancel(ID);
+    }
+
+    private Notification getNotification() {
+        Intent intent = new Intent(context, DownloadService.class);
+        intent.setAction(DownloadService.ACTION_CANCEL);
+
+        int flags = 0;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            flags |= PendingIntent.FLAG_IMMUTABLE;
+        }
+        PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, flags);
 
         NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL_ID)
                 .setSmallIcon(R.drawable.ic_notification)
-            .setContentIntent(clickIntent)
+                .setContentTitle(context.getString(R.string.downloading_songs))
-            .setContentTitle(String.format(context.getString(R.string.downloading_x_songs), songs.size()))
+                .setOngoing(true)
-            .setProgress(this.maximum, this.current, false)
+                .addAction(android.R.drawable.ic_menu_close_clear_cancel, context.getString(android.R.string.cancel), pendingIntent);
-            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-            .addAction(R.drawable.ic_close_white_24dp, context.getString(R.string.action_cancel), pendingCancel)
-            .setStyle(style)
-            .setShowWhen(false);
 
-        notificationManager.notify(NOTIFICATION_ID, builder.build());
+        String contentText = context.getResources().getQuantityString(R.plurals.downloading_s_songs, queue.size(), queue.size());
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.notification_download);
+            remoteViews.setTextViewText(R.id.notification_download_title, contentText);
+            int progress = lastPercentage > 0 ? lastPercentage : 0;
+            remoteViews.setProgressBar(R.id.notification_download_progress, 100, progress, totalSize == 0 && downloadedSize == 0);
+            builder.setCustomContentView(remoteViews);
+        } else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
+            int progress = lastPercentage > 0 ? lastPercentage : 0;
+            builder.setProgress(100, progress, totalSize == 0 && downloadedSize == 0);
+            builder.setContentText(contentText);
+        } else { // KitKat
+            builder.setContentText(contentText);
         }
 
-    public synchronized void stop(Song song) {
+        return builder.build();
-        if (song != null) {
-            songs.remove(song);
-        } else {
-            songs.clear();
-        }
-
-        if (!songs.isEmpty()) {
-            return;
-        }
-
-        current = 0;
-        maximum = 0;
-
-        notificationManager.cancel(NOTIFICATION_ID);
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            notificationManager.deleteNotificationChannel(CHANNEL_ID);
-        }
-    }
-
-    @RequiresApi(Build.VERSION_CODES.O)
-    private void createNotificationChannel() {
-        NotificationChannel notificationChannel = notificationManager.getNotificationChannel(CHANNEL_ID);
-
-        if (notificationChannel == null) {
-            notificationChannel = new NotificationChannel(CHANNEL_ID, context.getString(R.string.action_download), NotificationManager.IMPORTANCE_LOW);
-
-            notificationChannel.setDescription(context.getString(R.string.playing_notification_description));
-            notificationChannel.enableLights(false);
-            notificationChannel.enableVibration(false);
-
-            notificationManager.createNotificationChannel(notificationChannel);
-        }
     }
 }

app/src/main/java/org/adrianvictor/geleia/service/playback/LocalPlayer.java

@@ -2,6 +2,7 @@ package org.adrianvictor.geleia.service.playback;
 
 import android.content.Context;
 import android.net.Uri;
+import android.os.Build;
 import android.util.Log;
 import android.widget.Toast;
 
@@ -141,12 +142,18 @@ public class LocalPlayer implements Playback {
 
     private List<MediaItem> createMediaItems(List<Song> queue) {
         return queue.stream().map(song -> {
-            File audio = new File(MusicUtil.getFileUri(song));
+            String fileUri = MusicUtil.getFileUri(song);
-            Uri uri = Uri.fromFile(audio);
+            Uri uri;
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && fileUri.startsWith("content://")) {
+                uri = Uri.parse(fileUri);
+            } else {
+                File audio = new File(fileUri);
+                uri = Uri.fromFile(audio);
 
                 if (!audio.exists()) {
                     uri = Uri.parse(MusicUtil.getTranscodeUri(song));
                 }
+            }
 
             List<String> containers = PreferenceUtil.getInstance(context).getDirectPlayCodecs().stream()
                     .map(codec -> codec.container.toLowerCase(Locale.ROOT))

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

@@ -14,6 +14,7 @@ import androidx.annotation.ColorInt;
 import androidx.annotation.DrawableRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.content.res.AppCompatResources;
 import androidx.core.graphics.drawable.DrawableCompat;
 import androidx.core.content.res.ResourcesCompat;
 
@@ -91,18 +92,22 @@ public class ImageUtil {
     }
 
     public static Drawable getTintedVectorDrawable(@NonNull Context context, @DrawableRes int resId, @ColorInt int color) {
-        Drawable drawable = getVectorDrawable(context.getResources(), resId, context.getTheme());
+        final Drawable drawable = AppCompatResources.getDrawable(context, resId);
 
-        DrawableCompat.setTintMode(drawable, PorterDuff.Mode.SRC_IN);
+        if (drawable != null) {
-        DrawableCompat.setTint(drawable, color);
+            Drawable wrappedDrawable = DrawableCompat.wrap(drawable).mutate();
 
-        return drawable;
+            DrawableCompat.setTintMode(wrappedDrawable, PorterDuff.Mode.SRC_IN);
+            DrawableCompat.setTint(wrappedDrawable, color);
+            return wrappedDrawable;
         }
+        return null;
+    }
+
 
     public static Drawable getVectorDrawable(@NonNull Context context, @DrawableRes int resId) {
-        return getVectorDrawable(context.getResources(), resId, context.getTheme());
+        return AppCompatResources.getDrawable(context, resId);
     }
-
     public static Drawable resolveDrawable(@NonNull Context context, @AttrRes int drawableAttr) {
         TypedArray a = context.obtainStyledAttributes(new int[]{drawableAttr});
         Drawable drawable = a.getDrawable(0);

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

@@ -3,6 +3,7 @@ package org.adrianvictor.geleia.util;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
 import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;
@@ -82,7 +83,8 @@ public class MusicUtil {
     public static String getFileUri(Song song) {
         String location = PreferenceUtil.getInstance(App.getInstance()).getLocationDownload();
         File root = new File(location, "music");
-        if (!location.equals(App.getInstance().getCacheDir().toString())) {
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !location.equals(App.getInstance().getCacheDir().toString())) {
             Uri uri = Uri.parse(location);
             return new File(uri.getPath()).getAbsolutePath();
         }

app/src/main/java/org/adrianvictor/geleia/views/IconImageView.java

@@ -10,23 +10,27 @@ import org.adrianvictor.geleia.util.ThemeUtil;
 import org.adrianvictor.geleia.R;
 
 public class IconImageView extends AppCompatImageView {
+
     public IconImageView(Context context) {
         super(context);
-        init(context);
     }
 
     public IconImageView(Context context, AttributeSet attrs) {
         super(context, attrs);
-        init(context);
     }
 
     public IconImageView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        init(context);
     }
 
-    private void init(Context context) {
+    @Override
-        if (context == null) return;
+    protected void onAttachedToWindow() {
-        setColorFilter(ThemeUtil.getColorResource(context, R.attr.iconColor), PorterDuff.Mode.SRC_IN);
+        super.onAttachedToWindow();
+        init();
+    }
+
+    private void init() {
+        if (getContext() == null) return;
+        setColorFilter(ThemeUtil.getColorResource(getContext(), R.attr.iconColor), PorterDuff.Mode.SRC_IN);
     }
 }

app/src/main/res/drawable/ic_launcher_nodpi.xml

@@ -1,14 +1,4 @@
-<vector android:height="192dp" android:viewportHeight="24"
+<?xml version="1.0" encoding="utf-8"?>
-    android:viewportWidth="24" android:width="192dp"
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    xmlns:aapt="http://schemas.android.com/aapt" xmlns:android="http://schemas.android.com/apk/res/android">
+
-    <path
+</selector>
-        android:pathData="m12,9.8425c-1.1866,0 -2.1575,0.9709 -2.1575,2.1575s0.9709,2.1575 2.1575,2.1575 2.1575,-0.9709 2.1575,-2.1575 -0.9709,-2.1575 -2.1575,-2.1575zM12,1c-6.072,0 -11,4.928 -11,11s4.928,11 11,11 11,-4.928 11,-11 -4.928,-11 -11,-11zM12,7.05c2.739,0 4.95,2.211 4.95,4.95s-2.211,4.95 -4.95,4.95 -4.95,-2.211 -4.95,-4.95 2.211,-4.95 4.95,-4.95z" android:strokeWidth="2.1575">
-        <aapt:attr name="android:fillColor">
-            <gradient android:endX="25.2" android:endY="25.1996"
-                android:startX="1" android:startY="0.99960005" android:type="linear">
-                <item android:color="#FFAA5CC3" android:offset="0"/>
-                <item android:color="#FF00A4DC" android:offset="1"/>
-            </gradient>
-        </aapt:attr>
-    </path>
-</vector>

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

@@ -19,21 +19,22 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent" />
 
-    <ImageView
+    <ScrollView
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:layout_marginTop="40dp"
-        android:layout_marginBottom="40dp"
-        app:srcCompat="@drawable/ic_launcher_nodpi"
-        tools:ignore="ContentDescription"
         app:layout_constraintTop_toBottomOf="@id/toolbar"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
-        app:layout_constraintBottom_toTopOf="@id/username_layout" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical" >
 
             <com.google.android.material.textfield.TextInputLayout
-        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:id="@+id/username_layout"
+                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="32dp"
@@ -43,27 +44,24 @@
                 app:boxCornerRadiusBottomStart="24dp"
                 app:boxCornerRadiusTopEnd="24dp"
                 app:boxCornerRadiusTopStart="24dp"
-        app:errorEnabled="true"
+                app:boxStrokeColor="?android:textColorSecondary"
                 app:endIconMode="clear_text"
                 app:endIconTint="?android:textColorSecondary"
-        app:boxStrokeColor="?android:textColorSecondary"
+                app:errorEnabled="true"
-        app:hintTextColor="?android:textColorSecondary"
+                app:hintTextColor="?android:textColorSecondary">
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/password_layout">
 
                 <com.google.android.material.textfield.TextInputEditText
                     android:id="@+id/username"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-            android:inputType="textNoSuggestions"
+                    android:hint="@string/username"
-            android:hint="@string/username" />
+                    android:inputType="textNoSuggestions" />
 
             </com.google.android.material.textfield.TextInputLayout>
 
             <com.google.android.material.textfield.TextInputLayout
-        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:id="@+id/password_layout"
+                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="32dp"
@@ -73,27 +71,24 @@
                 app:boxCornerRadiusBottomStart="24dp"
                 app:boxCornerRadiusTopEnd="24dp"
                 app:boxCornerRadiusTopStart="24dp"
-        app:errorEnabled="true"
+                app:boxStrokeColor="?android:textColorSecondary"
                 app:endIconMode="password_toggle"
                 app:endIconTint="?android:textColorSecondary"
-        app:boxStrokeColor="?android:textColorSecondary"
+                app:errorEnabled="true"
-        app:hintTextColor="?android:textColorSecondary"
+                app:hintTextColor="?android:textColorSecondary">
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/server_layout">
 
                 <com.google.android.material.textfield.TextInputEditText
                     android:id="@+id/password"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-            android:inputType="textPassword"
+                    android:hint="@string/password"
-            android:hint="@string/password" />
+                    android:inputType="textPassword" />
 
             </com.google.android.material.textfield.TextInputLayout>
 
             <com.google.android.material.textfield.TextInputLayout
-        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:id="@+id/server_layout"
+                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="32dp"
@@ -103,21 +98,18 @@
                 app:boxCornerRadiusBottomStart="24dp"
                 app:boxCornerRadiusTopEnd="24dp"
                 app:boxCornerRadiusTopStart="24dp"
-        app:errorEnabled="true"
+                app:boxStrokeColor="?android:textColorSecondary"
                 app:endIconMode="clear_text"
                 app:endIconTint="?android:textColorSecondary"
-        app:boxStrokeColor="?android:textColorSecondary"
+                app:errorEnabled="true"
-        app:hintTextColor="?android:textColorSecondary"
+                app:hintTextColor="?android:textColorSecondary">
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/login">
 
                 <com.google.android.material.textfield.TextInputEditText
                     android:id="@+id/server"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-            android:inputType="textUri"
+                    android:hint="@string/server"
-            android:hint="@string/server" />
+                    android:inputType="textUri" />
 
             </com.google.android.material.textfield.TextInputLayout>
 
@@ -129,10 +121,7 @@
                 android:layout_marginTop="32dp"
                 android:layout_marginBottom="16dp"
                 android:text="@string/login"
-        app:cornerRadius="24dp"
+                app:cornerRadius="24dp" />
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/select" />
 
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/select"
@@ -141,12 +130,11 @@
                 android:layout_marginHorizontal="32dp"
                 android:layout_marginTop="0dp"
                 android:layout_marginBottom="32dp"
-        android:text="@string/select"
                 android:backgroundTint="?cardBackgroundColor"
+                android:text="@string/select"
                 app:cornerRadius="24dp"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toBottomOf="parent"
                 tools:ignore="UnusedAttribute" />
+        </LinearLayout>
+    </ScrollView>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -5,7 +5,6 @@
     android:layout_width="match_parent"
     android:layout_height="100dp"
     android:layout_margin="20dp"
-    android:background="@drawable/card_server"
     android:elevation="4dp"
     tools:ignore="UnusedAttribute">
 

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

@@ -0,0 +1,23 @@
+<?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="wrap_content"
+    android:orientation="vertical"
+    android:padding="8dp">
+
+    <TextView
+        android:id="@+id/notification_download_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="@style/TextAppearance.Compat.Notification.Title"
+        tools:text="Downloading 2 songs" />
+
+    <ProgressBar
+        android:id="@+id/notification_download_progress"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp" />
+
+</LinearLayout>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>

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

@@ -245,4 +245,11 @@
     <string name="app_license">GNU General Public License v3.0</string>
     <string name="application_license">GNU General Public License v3.0</string>
 
+    <string name="download_channel_name">Downloads</string>
+    <string name="downloading_songs">Downloading songs</string>
+    <plurals name="downloading_s_songs">
+        <item quantity="one">Downloading %d song</item>
+        <item quantity="other">Downloading %d songs</item>
+    </plurals>
+
 </resources>