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]
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>
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
//
}
}
在一般情况下
FCM (Firebase Cloud Messaging)中有两种类型的消息:
显示消息:这些消息仅在应用程序处于前台时触发onmessagerreceived()回调
数据消息:这些消息触发onmessagerreceived()回调，即使你的应用程序在前台/后台/被杀死
数据电文示例:
{
"to": "/path",
"data":
{
"my_custom_key": "my_custom_value",
"my_custom_key2": true
}
}
显示消息示例:
{
"notification": {
"title" : "title",
"body" : "body text",
"icon" : "ic_notification",
"click_action" : "OPEN_ACTIVITY_1"
}
}
Android端可以处理如下通知:
public class MyFirebaseMessagingService extends FirebaseMessagingService {
…
@Override public void onMessageReceived(RemoteMessage remoteMessage){
Map<String, String> data = remoteMessage.getData();
String myCustomKey = data.get("my_custom_key");
}
…
}
更多关于FCM的详细信息可以在这里找到:在Android上设置一个Firebase云消息客户端应用程序
