在FCM中单击通知时打开特定活动

Question

我正在工作的应用程序中，我被要求显示通知。对于通知，我使用的是FireBase云消息(FCM)。我能够得到通知，当应用程序在后台。

2.）MyFirebaseInstanceIDService

这是我在MyFirebaseMessagingService类中为onMessageReceived（）方法编写的代码示例。

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = "FirebaseMessageService";
Bitmap bitmap;


public void onMessageReceived(RemoteMessage remoteMessage) {



    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());
    }

    // 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.
}
/**
 * Create and show a simple notification containing the received FCM message.
 */

private void sendNotification(String messageBody, Bitmap image, String TrueOrFalse) {
    Intent intent = new Intent(this, Notification.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    intent.putExtra("Notification", TrueOrFalse);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
            PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setLargeIcon(image)/*Notification icon image*/
            .setContentTitle(messageBody)
            .setStyle(new NotificationCompat.BigPictureStyle()
             .bigPicture(image))/*Notification with Image*/
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}

/*
*To get a Bitmap image from the URL received
* */
public Bitmap getBitmapfromUrl(String imageUrl) {
    try {
        URL url = new URL(imageUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap bitmap = BitmapFactory.decodeStream(input);
        return bitmap;

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return null;

    }
}

Answer 1

1.通知消息：有时被认为是“显示消息”。

FCM代表客户端应用程序自动向最终用户设备显示消息。通知消息具有一组预定义的用户可见键。

2.数据报文：由客户端APP处理。

根据FCM文档，在Android应用程序中接收消息

• 应用程序在后台时传递的通知。在这种情况下，通知被传递到设备的系统托盘。默认情况下，用户点击通知将打开应用程序启动器。
• 同时具有通知和数据负载的消息，包括后台和前台。在这种情况下，通知将传递到
  设备的系统托盘，数据负载将在启动程序活动意图的附加部分中传递。

在通知负载中设置click_action:

例如，将click_action设置为open_activity_1以触发如下所示的意图筛选器：

<intent-filter>
  <action android:name="OPEN_ACTIVITY_1" />
  <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

FCM有效载荷如下所示：

{
  "to":"some_device_token",
  "content_available": true,
  "notification": {
      "title": "hello",
      "body": "test message",
      "click_action": "OPEN_ACTIVITY_1"
  },
  "data": {
      "extra":"juice"
  }
}