这是我的舱单:
<service android:name=".fcm.PshycoFirebaseMessagingServices">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
<service android:name=".fcm.PshycoFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
</intent-filter>
</service>
当应用程序在后台和通知到达，然后默认通知来，不运行我的onmessagerreceived代码。
这是我的onMessageReceived代码。如果我的应用程序在前台运行，而不是在后台运行，就会调用这个函数。我怎么能运行这段代码时，应用程序是在后台太?
// [START receive_message]
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
// TODO(developer): Handle FCM messages here.
// If the application is in the foreground handle both data and notification messages here.
// 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.
data = remoteMessage.getData();
String title = remoteMessage.getNotification().getTitle();
String message = remoteMessage.getNotification().getBody();
String imageUrl = (String) data.get("image");
String action = (String) data.get("action");
Log.i(TAG, "onMessageReceived: title : "+title);
Log.i(TAG, "onMessageReceived: message : "+message);
Log.i(TAG, "onMessageReceived: imageUrl : "+imageUrl);
Log.i(TAG, "onMessageReceived: action : "+action);
if (imageUrl == null) {
sendNotification(title,message,action);
} else {
new BigPictureNotification(this,title,message,imageUrl,action);
}
}
// [END receive_message]
2018年6月答案:
你必须确保消息中没有“通知”关键字。只包括“data”，应用程序将能够处理onmessagerreceived中的消息，即使在后台或已杀死。
使用云功能:
const message = {
token: token_id, // obtain device token id by querying data in firebase
data: {
title: "my_custom_title",
body: "my_custom_body_message"
}
}
return admin.messaging().send(message).then(response => {
// handle response
});
然后在onmessagerreceived()中，在你的类中扩展com.google.firebase.messaging.FirebaseMessagingService:
if (data != null) {
Log.d(TAG, "data title is: " + data.get("title");
Log.d(TAG, "data body is: " + data.get("body");
}
// build notification using the body, title, and whatever else you want.
要在后台捕获消息，您需要使用BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import androidx.legacy.content.WakefulBroadcastReceiver
import com.google.firebase.messaging.RemoteMessage
class FirebaseBroadcastReceiver : WakefulBroadcastReceiver() {
val TAG: String = FirebaseBroadcastReceiver::class.java.simpleName
override fun onReceive(context: Context, intent: Intent) {
val dataBundle = intent.extras
if (dataBundle != null)
for (key in dataBundle.keySet()) {
Log.d(TAG, "dataBundle: " + key + " : " + dataBundle.get(key))
}
val remoteMessage = RemoteMessage(dataBundle)
}
}
把这个加到你的舱单上
<receiver
android:name="MY_PACKAGE_NAME.FirebaseBroadcastReceiver"
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>
你要工作onmessagerreceived (RemoteMessage RemoteMessage)在后台只发送数据部分通知部分这:
"data": "image": "", "message": "Firebase Push Message Using API",
"AnotherActivity": "True"， "to": "设备id或设备令牌"
通过这个onMessageRecivied是调用后台和前台不需要处理通知使用通知托盘在你的启动器活动。
处理数据负载使用这个:
public void onMessageReceived(RemoteMessage remoteMessage)
if (remoteMessage.getData().size() > 0)
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
下面是关于firebase消息的更清晰的概念。我从他们的支援组找到的。
Firebase有三种消息类型:
通知消息:通知消息工作在后台或前台。当app在后台时，通知消息被传递到系统托盘。如果应用程序在前台，消息由onmessagerreceived()或didReceiveRemoteNotification回调处理。这些实质上就是所谓的显示消息。
数据消息:在Android平台上，数据消息可以工作在后台和前台。数据消息将由onMessageReceived()处理。在Android上，数据有效载荷可以在用于启动你的活动的Intent中检索。具体来说，如果你有"click_action":"launch_Activity_1"，你只能通过getIntent()从Activity_1中检索这个意图。
Messages with both notification and data payloads: When in the background, apps receive the notification payload in the notification tray, and only handle the data payload when the user taps on the notification. When in the foreground, your app receives a message object with both payloads available. Secondly, the click_action parameter is often used in notification payload and not in data payload. If used inside data payload, this parameter would be treated as custom key-value pair and therefore you would need to implement custom logic for it to work as intended.
另外，我建议您使用onMessageReceived方法(参见数据消息)来提取数据包。根据您的逻辑，我检查了bundle对象，并没有发现预期的数据内容。这里有一个类似案例的参考，可能会更清楚。
欲了解更多信息，请访问我的这个线程
为了能够从应用程序在后台发送的firebase通知中检索数据，您需要在通知数据集中添加click_action条目。
在firebase控制台设置额外的通知选项，如下所示:(你必须包括你想在应用程序中检索的任何额外数据):
并包括意图过滤器在你的manifest文件下的活动要启动
<activity
android:name=".MainActivity"
android:exported="true"
android:label="@string/app_name"
android:theme="@style/Theme.MyApp.SplashScreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<intent-filter>
<action android:name="FIREBASE_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
然后在你的onNewIntent活动中获取bundle数据:
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
Bundle data = intent.getExtras();
if (data != null) {
for (String key : data.keySet()) {
Object value = data.get(key);
// do what you want with the data entries
Log.d(FIREBASE_TAG, "Key: " + key + " Value: " + value);
Toast.makeText(this, "Key: "+key+".... Value: "+value, Toast.LENGTH_LONG).show;
}
}
}
当你的应用程序在前台时，你可以像这样设置onmessagerecreceived:
@Override
public void onMessageReceived(@NonNull RemoteMessage message) {
Log.d(FIREBASE_TAG, "Message From: " + message.getFrom());
if (message.getNotification() != null) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Map<String, String> data = message.getData();
if(data != null && !data.isEmpty()){
for(Map.Entry<String ,String > entry : data.entrySet()) {
intent.putExtra(entry.getKey(), entry.getValue());
}
}
//.......
// implement the rest of the code to show notification
//
}
}
