我已将 Firebase 云消息传递集成到我的应用程序中。当我从 Firebase 控制台发送通知时,如果应用程序在后台或未打开,则成功接收到通知, 但如果应用程序在前台或已打开,则无法接收到通知。
欢迎提出所有建议。
我已将 Firebase 云消息传递集成到我的应用程序中。当我从 Firebase 控制台发送通知时,如果应用程序在后台或未打开,则成功接收到通知, 但如果应用程序在前台或已打开,则无法接收到通知。
欢迎提出所有建议。
当应用程序在前台时,通知本身不会生成。您需要编写一些额外的代码。当接收到消息时,将调用onMessageReceived()
方法,您可以在其中生成通知。以下是代码:
public class MyFirebaseMessagingService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
Log.d("msg", "onMessageReceived: " + remoteMessage.getData().get("message"));
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
String channelId = "Default";
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(remoteMessage.getNotification().getTitle())
.setContentText(remoteMessage.getNotification().getBody()).setAutoCancel(true).setContentIntent(pendingIntent);;
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(channelId, "Default channel", NotificationManager.IMPORTANCE_DEFAULT);
manager.createNotificationChannel(channel);
}
manager.notify(0, builder.build());
}
}
RemoteMessage.Notification
对象转换为系统通知的帮助程序。这实际上是他们在后台通知中幕后所做的事情,我只希望我们可以重用代码而不是重复一切... - David FerrandFirebaseMessagingService
不起作用。在这种情况下,如果您想从 FCM 接收消息,则可以使用 WakefulBroadcastReceiver
。public class FirebaseDataReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.d("BroadcastReceiver::", "BroadcastReceiver");
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(intent.getExtras().getString("title"))
.setContentText(intent.getExtras().getString("message"));
NotificationManager manager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
manager.notify(0, builder.build());
}
}
在 play store 中将 firebase
与 GCM
连接,并在清单中编写以下代码:
<receiver
android:name=".firebase.FirebaseDataReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</receiver>