Question

我正在实现Android FCM并已完成所有设置，从firebase发送时会收到默认通知，但服务未处理已发送的消息。

以下是我的服务

：

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = "MyFirebaseMsgService";

/**
 * Called when message is received.
 *
 * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
 */
// [START receive_message]



@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    // TODO(developer): Handle FCM messages here.
    // Not getting messages here? See why this may be:
    Log.d(TAG, "From: " + remoteMessage.getFrom());

    // Check if message contains a data payload.
    if (remoteMessage.getData().size() > 0) {
        Log.d(TAG, "Message data payload: " + remoteMessage.getData());

        if (/* Check if data needs to be processed by long running job */ true) {
            // For long-running tasks (10 seconds or more) use Firebase Job Dispatcher.
            scheduleJob();
        } else {
            // Handle message within 10 seconds
            handleNow();
        }

    }

    // Check if message contains a notification payload.
    if (remoteMessage.getNotification() != null) {
        Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
    }

    // Also if you intend on generating your own notifications as a result of a received FCM
    // message, here is where that should be initiated. See sendNotification method below.
}

我也在清单文件中声明了此服务。

从Firebase控制台发送消息时，我确实收到带有标题和正文的默认通知，但“调试日志”上却什么也没有。实际上，该服务甚至没有被触发。我需要实现图像通知和键值对，因此这是必需的。以下是清单声明：

  <service android:name=".MyFirebaseMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

下面是应用程序类中的声明。

 FirebaseMessaging.getInstance().subscribeToTopic("weather")
                .addOnCompleteListener(new OnCompleteListener<Void>() {
                    @Override
                    public void onComplete(@NonNull Task<Void> task) {
                        String msg = "Subscribed";
                        if (!task.isSuccessful()) {
                            msg = "Message";
                        }
                        Log.d("Token", msg);
                        Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_SHORT).show();
                    }
                });

Answer 1

我相信仅当您的应用程序位于前台时才调用此服务。如果它在后台，则默认处理程序会处理它。除了发送“数据”通知而不是文本通知之外，不确定是否有其他方法可以覆盖该行为。

Android FCM无法启动服务并收到回复

1 个答案: