firebase在app前臺時執(zhí)行onMessageReceived方法，可以自定義樣式，但是在app后臺或被殺死時，不執(zhí)行onMessageReceived方法，所以需要重寫firebase的zzm方法才可以更改系統(tǒng)的默認(rèn)樣式
public class MyNotificationService extends FirebaseMessagingService {
public void onMessageReceived(RemoteMessage remoteMessage) { // do nothing}@Overridepublic void zzm(Intent intent) { Intent launchIntent = new Intent(this, SplashScreenActivity.class); launchIntent.setAction(Intent.ACTION_MAIN); launchIntent.addCategory(Intent.CATEGORY_LAUNCHER); PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* R equest code */, launchIntent, PendingIntent.FLAG_ONE_SHOT); Bitmap rawBitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.ic_notification) .setLargeIcon(rawBitmap) .setContentTitle(intent.getStringExtra("gcm.notification.title")) .setContentText(intent.getStringExtra("gcm.notification.body")) .setAutoCancel(true) .setContentIntent(pendingIntent); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());}}
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