Ich verwende Glide für alle Bilder, die vom Server geladen werden, aber ich habe Fehlerbehebung beim Versuch, sie korrekt auf Benachrichtigungen und RemoteControlClientCompat (das coole Ding mit Sperrbildschirmen) einzustellen. Ich entwickle einen Musik-Player, sodass sich jedes Mal, wenn ein Song geändert wird, das Song-Cover von Benachrichtigungen ändern muss. Ich habe diesen Code und er funktioniert zum ersten Mal (obwohl das Bild von der URL oder von Drawable geladen wird), aber nicht, wenn es zum zweiten Mal aufgerufen wird. Das Bild ändert sich nicht! CustomNotification wird aufgerufen, wenn ein Song geändert wird. Und RegisterRemoteClient wird beim Starten der Aktivität aufgerufen.

Wenn dies nicht der richtige Weg ist, sagen Sie bitte, wie.

public void CustomNotification() {
    Log.d(TAG, "Set custom notification");

    simpleRemoteView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.notification_custom);
    expandedRemoteView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.notification_big);

    mNotification = new NotificationCompat.Builder(getApplicationContext())
            .setSmallIcon(R.mipmap.ic_main_logo)
            .setTicker(mSongTitle + " - " + mSongAuthors)
            .setContentTitle(mSongTitle).build();

    setRemoteListeners(simpleRemoteView);
    setRemoteListeners(expandedRemoteView);

    try {
        //Check if playingSong has a cover url, if not set one from drawable
        if(!playingSong.has("cover")){
            mDummyAlbumArt = BitmapFactory.decodeResource(getResources(),R.drawable.image_song_album);
            mDummyAlbumArt2 = BitmapFactory.decodeResource(getResources(),R.drawable.image_song_album);
            mDummyAlbumArt3 = BitmapFactory.decodeResource(getResources(),R.drawable.image_song_album);
        }else {
            Glide.with(MainActivity.context)
                    .load(API.imgUrl(playingSong.getString("cover_img")))
                    .asBitmap()
                    .into(new SimpleTarget<Bitmap>(100, 100) {
                        @Override
                        public void onResourceReady(Bitmap bitmap, GlideAnimation anim) {
                            mDummyAlbumArt = bitmap;
                            mDummyAlbumArt2 = bitmap;
                            mDummyAlbumArt3 = bitmap;
                        }
                    });
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

    mNotification.contentView = simpleRemoteView;
    mNotification.contentView.setTextViewText(R.id.textSongName, mSongTitle);
    mNotification.contentView.setTextViewText(R.id.textAlbumName, mSongAuthors);
    mNotification.contentView.setImageViewBitmap(R.id.imageViewAlbumArt, mDummyAlbumArt);

    if (currentVersionSupportBigNotification) {
        mNotification.bigContentView = expandedRemoteView;
        mNotification.bigContentView.setTextViewText(R.id.textSongName, mSongTitle);
        mNotification.bigContentView.setTextViewText(R.id.textAlbumName, mSongAuthors);
        mNotification.bigContentView.setImageViewBitmap(R.id.imageViewAlbumArt, mDummyAlbumArt2);
    }

    if (mPlayer != null) {
        if (!mPlayer.isPlaying()) {
            mNotification.contentView.setImageViewResource(R.id.btnPlayPause, R.mipmap.play);
            if (currentVersionSupportBigNotification) {
                mNotification.bigContentView.setImageViewResource(R.id.btnPlayPause, R.mipmap.play);
            }
        } else {
            mNotification.contentView.setImageViewResource(R.id.btnPlayPause, R.mipmap.pause);
            if (currentVersionSupportBigNotification) {
                mNotification.bigContentView.setImageViewResource(R.id.btnPlayPause, R.mipmap.pause);
            }
        }
    }

    mNotification.flags |= Notification.FLAG_ONGOING_EVENT;
    if(currentVersionSupportBigNotification) { //As priority_max only suported on API 16, the same as big notification
        mNotification.priority = Notification.PRIORITY_MAX;
    }
    startForeground(NOTIFICATION_ID, mNotification);

    //update remote controls
    if (currentVersionSupportLockScreenControls) {
        remoteControlClientCompat.editMetadata(true)
                .putString(MediaMetadataRetriever.METADATA_KEY_TITLE, mSongTitle + " - " + mSongAuthors)
                .putBitmap(RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mDummyAlbumArt3)
                .apply();
    }
}

public void setRemoteListeners(RemoteViews remoteViews){
    Log.d(TAG,"Setting remote listeners");
    PendingIntent piAppActivity = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class),
            PendingIntent.FLAG_UPDATE_CURRENT);
    PendingIntent piPlayPause = PendingIntent.getService(this, 0, new Intent(MusicService.ACTION_TOGGLE_PLAYBACK), PendingIntent.FLAG_UPDATE_CURRENT);
    PendingIntent piNext = PendingIntent.getService(this, 0, new Intent(MusicService.ACTION_SKIP), PendingIntent.FLAG_UPDATE_CURRENT);
    PendingIntent piClose = PendingIntent.getService(this, 0, new Intent(MusicService.ACTION_STOP), PendingIntent.FLAG_UPDATE_CURRENT);
    PendingIntent piPrevious = PendingIntent.getService(this, 0, new Intent(MusicService.ACTION_PREVIOUS), PendingIntent.FLAG_UPDATE_CURRENT);

    remoteViews.setOnClickPendingIntent(R.id.linearLayoutNotification, piAppActivity);
    remoteViews.setOnClickPendingIntent(R.id.btnPlayPause, piPlayPause);
    remoteViews.setOnClickPendingIntent(R.id.btnNext, piNext);
    remoteViews.setOnClickPendingIntent(R.id.btnDelete, piClose);
    remoteViews.setOnClickPendingIntent(R.id.btnPrevious, piPrevious);
}

private void RegisterRemoteClient(){
    // Use the media button APIs (if available) to register ourselves for media button
    // events

    MediaButtonHelper.registerMediaButtonEventReceiverCompat(mAudioManager, mMediaButtonReceiverComponent);
    // Use the remote control APIs (if available) to set the playback state
    if (remoteControlClientCompat == null) {
        Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
        intent.setComponent(mMediaButtonReceiverComponent);
        remoteControlClientCompat = new RemoteControlClientCompat(PendingIntent.getBroadcast(this /*context*/,0 /*requestCode, ignored*/, intent /*intent*/, 0 /*flags*/));
        RemoteControlHelper.registerRemoteControlClient(mAudioManager,remoteControlClientCompat);
    }

    remoteControlClientCompat.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
    remoteControlClientCompat.setTransportControlFlags(
            RemoteControlClient.FLAG_KEY_MEDIA_PAUSE |
                    RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS |
                    RemoteControlClient.FLAG_KEY_MEDIA_NEXT |
                    RemoteControlClient.FLAG_KEY_MEDIA_STOP);
}