android - 在 Flutter App 中从后台接收 FCM 时如何显示自定义通知?
问题描述
1我正在使用 Flutter 做一个聊天和 voip 应用程序。当用户有来电时尝试实现自定义通知时,我遇到了问题。
当应用程序处于前台时,自定义通知会很好地显示。问题是:当应用程序终止或在后台时,自定义通知不会显示。
我尝试了其他一些方法:
- 在本机代码中收听 FCM(MyFirebaseMessagingService,在 onMessageReceived 我调用 showNotification() 但它也不会显示
- 请按照这篇中等文章中的这些步骤操作:https ://medium0.com/@info_67212/firebase-push-notification-with-action-button-in-flutter-a841da348097 。它也不起作用
请帮助我。非常感谢
在 main.dart
Future<void> _connectToAndroid() async {
try {
await platform.invokeMethod('connect');
} on PlatformException catch (e) {
print("EXCEPTION $e");
}
}
void firebaseCloudMessaging_Listeners() {
if (Platform.isIOS) iOS_Permission();
_firebaseMessaging.getToken().then((token) {
tokenFirebase = token;
print('token $token');
});
_firebaseMessaging.configure(
onMessage: (Map<String, dynamic> message) async {
print('on 1111msg $message');
_connectToAndroid();
_showNotification(jsonDecode(message['data']['ntf_data'])['title'], jsonDecode(message['data']['ntf_data'])['message'], jsonDecode(message['data']['ntf_data'])['conversationId']);
},
onResume: (Map<String, dynamic> message) async {
print('on resume $message');
},
onBackgroundMessage: myBackgroundMessageHandler,
onLaunch: (Map<String, dynamic> message) async {
print('on launch $message');
},
);
}
在 MainActivity.kt
class MainActivity : FlutterActivity() {
private val CHANNEL = "connect"
override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
super.configureFlutterEngine(flutterEngine)
MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
Log.e("MainActivity", "CHANNEL")
result.success(null)
showNotification()
}
}
private fun showNotification() {
val customView = RemoteViews(packageName, R.layout.custom_notification)
// val notificationIntent = Intent(this, CustomDialog::class.java)
// val pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT)
// val hungupPendingIntent = PendingIn4tent.getBroadcast(this, 0, hungupIntent, PendingIntent.FLAG_UPDATE_CURRENT)
// val answerPendingIntent = PendingIntent.getActivity(this, 0, answerIntent, PendingIntent.FLAG_UPDATE_CURRENT)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val importance = NotificationManager.IMPORTANCE_HIGH
val channel = NotificationChannel("CHANNEL_ID", "name", importance).apply {
description = "descriptionText"
}
// Register the channel with the system
val notificationManager: NotificationManager =
getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
notificationManager.createNotificationChannel(channel)
val newMessageNotification = Notification.Builder(context, "CHANNEL_ID")
.setSmallIcon(R.drawable.app_icon)
.setContentText("IncomingCall")
.setTicker("Call_STATUS")
.setTimeoutAfter(5000)
.setCategory(NotificationCompat.CATEGORY_CALL)
.setCustomContentView(customView)
.build()
with(NotificationManagerCompat.from(applicationContext)) {
// notificationId is a unique int for each notification that you must define
notify(11111111, newMessageNotification)
}
}
}
}
日志
2021-01-08 15:24:10.141 32759-3385/com.meeyland.meeyteam W/FirebaseMessaging: Notification Channel set in AndroidManifest.xml has not been created by the app. Default value will be used.
2021-01-08 15:24:10.213 32759-2410/com.meeyland.meeyteam V/FA: Connecting to remote service
2021-01-08 15:24:10.239 32759-2410/com.meeyland.meeyteam D/FA: Connected to remote service
2021-01-08 15:24:10.241 32759-2410/com.meeyland.meeyteam V/FA: Processing queued up service tasks: 1
2021-01-08 15:24:15.312 32759-2410/com.meeyland.meeyteam V/FA: Inactivity, disconnecting from the service
2021-01-08 15:24:15.319 32759-2410/com.meeyland.meeyteam W/ConnectionTracker: Exception thrown while unbinding
java.lang.IllegalArgumentException: Service not registered: lu@7ace62f
at android.app.LoadedApk.forgetServiceDispatcher(LoadedApk.java:1751)
at android.app.ContextImpl.unbindService(ContextImpl.java:1777)
at android.content.ContextWrapper.unbindService(ContextWrapper.java:741)
at ci.f(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):1)
at ci.d(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):2)
at lv.E(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):9)
at lf.a(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):3)
at ef.run(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):3)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:462)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at iy.run(:com.google.android.gms.dynamite_measurementdynamite@204516083@20.45.16 (120408-0):5)
解决方案
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