有两种类型的FCM（火力地堡云消息）的消息：
显示信息：这些消息触发onMessageReceived（）回调，只有当你的应用程序是在前台
数据消息：论文的消息触发，即使你的应用程序是在前台/后台onMessageReceived（）回调/杀
当在前台接到通知，我能够打开特定活动的通知，并按但是当在后台接到通知我可以T处理通知按（它会自动启动的主要活动）
我做了一些搜索，发现：
我添加了这些意向过滤器，以我的通知活动：
<activity android:name="com.mahdi.tiger.alahedclubnewtesting.activity.News_description"
android:exported="true">
<intent-filter>
<action android:name="com.mahdi.tiger.alahedclubnewtesting.activity.News_description"></action>
<category android:name="android.intent.category.DEFAULT"></category>
</intent-filter>
</activity>
但它不将不起作用..
我还发现：
When your app is in the background, Android directs notification messages to the system tray. A user tap on the notification opens the app launcher by default.
所以我该怎么做 ？我想，当在后台处理点击打开我的比活度收到通知。
这是我使用的代码：
public class myFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "FirebaseMessageService";
Bitmap bitmap;
/**
* Called when message is received.
*
* @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
*/
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
// There are two types of messages data messages and notification messages. Data messages are handled
// here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
// traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
// is in the foreground. When the app is in the background an automatically generated notification is displayed.
// When the user taps on the notification they are returned to the app. Messages containing both notification
// and data payloads are treated as notification messages. The Firebase console always sends notification
// messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
//
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());
String title=remoteMessage.getNotification().getTitle();
String body=remoteMessage.getNotification().getBody();
String action=remoteMessage.getNotification().getClickAction();
sendNotification2(title,body,action);
}
//The message which i send will have keys named [message, image, AnotherActivity] and corresponding values.
//You can change as per the requirement.
String text = remoteMessage.getData().get("title");
//message will contain the Push Message
String message = remoteMessage.getData().get("message");
//imageUri will contain URL of the image to be displayed with Notification
//If the key AnotherActivity has value as True then when the user taps on notification, in the app AnotherActivity will be opened.
//If the key AnotherActivity has value as False then when the user taps on notification, in the app MainActivity will be opened.
String TrueOrFlase = remoteMessage.getData().get("AnotherActivity");
//To get a Bitmap image from the URL received
sendNotification(message, text,TrueOrFlase);
}
/**
* Create and show a simple notification containing the received FCM message.
*/
private void sendNotification(String messageBody,String text, String TrueOrFalse) {
Intent intent = new Intent(this, Slider_description.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("AnotherActivity", 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)
.setSmallIcon(R.mipmap.ahed_me)
.setContentTitle(text)
.setAutoCancel(true)
.setContentText(messageBody)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
}
注：我使用火力地堡控制台发送通知。
非常感谢。
有些测试后，我发现这一点。
你最有趣的部分。
有两种类型的消息数据的消息和通知消息。数据消息在这里onMessageReceived处理的应用程序是否在前台或后台。数据消息是传统上与GCM中使用的类型。通知消息将只接受在这里onMessageReceived当应用程序在前台。当应用程序是在背景被显示自动生成的通知。当用户点击该通知，他们将返回到应用程序。同时包含通知和数据有效载荷的消息被当作通知消息。在火力地堡控制台总是发送notificationmessages。
如果你想在通知完全控制你需要发送的数据信息。你不能用火力控制台，从我的理解去做。