应用程序关闭时 Firebase 推送通知不起作用

Question

我是 android 新手，我遇到了这个问题 如果应用程序在前台，则通知正常显示 如果我将应用程序放在后台，通知将显示并且它也可以正常工作 BUT 问题是-> when I close the application(the app is killed) the notification does not show

我尝试过的解决方案

• 只发送通知
• 只发送数据
• 没有为通知放置自定义视图

我的理解是，如果我发送only 通知 without data 它将显示应用程序何时处于前台AKA when it's open and you can see it 和 如果我只在没有通知的情况下发送数据，它将在后台显示，当应用程序被终止时，数据将在主要活动意图中找到（但显然这是NOT 我的情况） 我正在使用 android 10 Infinix Note 5 手写笔，以防万一这个型号有问题 但我仍然可以正常看到来自任何其他应用的通知

edit 所以我尝试在其他手机上运行该应用程序，它按预期工作，但在我的手机上，当应用程序关闭时发送的所有通知只会在我打开应用程序时显示

I close the app -> send some notifications -> no thing on the phone -> 
open the app again -> all the notifications I sent are are now there

当我在应用程序处于前台时发送通知以及将其置于后台时，它仍然可以正常工作

代码：

    public class FirebasePushNotificationConfig extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        sendNotification(remoteMessage);
    }  

    private void sendNotification(RemoteMessage remoteMessage) {

         NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {  
            NotificationChannel channel = new NotificationChannel(AppStrings.MSG.name(), "Testing", NotificationManager.IMPORTANCE_DEFAULT);
            channel.enableVibration(false);
            channel.enableLights(true);
            manager.createNotificationChannel(channel);
        }
        PendingIntent pendingIntent = getPendingIntent(remoteMessage);
     

        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, AppStrings.MSG.name())
                .setSmallIcon(R.drawable.ic_notifications_black_24dp)
                .setVibrate(null)
                .setContentTitle(remoteMessage.getData().get(AppStrings.MSG.name()))
                .setContentText(remoteMessage.getData().get(AppStrings.MSG.name()))
                .setAutoCancel(true) 
                .setWhen(System.currentTimeMillis())
                .setContentIntent(pendingIntent);  
        Notification n = mBuilder.build();
        manager.notify(1, n);}


    private PendingIntent getPendingIntent(RemoteMessage remoteMessage) {
        Intent intent = new Intent(this, LoginActivity.class);  
        intent.putExtra(AppStrings.Notifications_Data.name(), remoteMessage.getData().get(AppStrings.Notifications_Data.name()));  
        intent.putExtra(AppStrings.Is_There_Notification.name(), AppStrings.YES.name());  
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra(AppStrings.Notifications_Destination.name(), remoteMessage.getData().get(AppStrings.Notifications_Destination.name()));  
        return PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
    }

    @Override
    public void onNewToken(String token) {
        super.onNewToken(token);
        System.out.println("log Token is " + token);
        Log.d("Test", "token: " + token);
    }}

清单

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.test">

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.SET_ALARM " />
    <uses-permission android:name="android.permission.READ_PHONE_STATE " />
    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS " />
    <uses-permission android:name="android.permission.READ_SMS " />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />  
    <uses-permission android:name="android.permission.WAKE_LOCK" /> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <application
        android:name=".Config.App"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        android:usesCleartextTraffic="true"
        tools:ignore="GoogleAppIndexingWarning">
        <activity android:name=".LocationActivity"></activity>
        <activity android:name=".MapsActivity" />
        <!--        <activity android:name=".ProfileActivity" />-->
        <activity android:name=".ChatManagerActivity" />
        <activity android:name=".RegisterActivity" />
        <activity android:name=".MainActivity" />
        <activity android:name=".AuthActivity" />
        <activity android:name=".ChatActivity" />
        <activity android:name=".LoginActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <action android:name=".LoginActivity" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

        <receiver
            android:name=".broadcastRecivers.AlertReciver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>
        <receiver
            android:name=".broadcastRecivers.LoginReciver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>

        <service
            android:name=".Config.FirebasePushNotificationConfig"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="key" />

        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="com.example.test.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>
    </application>

</manifest>`

我发送的数据是这样的

{"to":"key"
,"notification":{
"title":"hello it's test"
,"body":"still a test"

},
"data": {
"Notifications_Destination" : "direction"
,"MSG":"this is a test notifiation",
"Notifications_Data":5
}}

Answer 1

使用扩展 FirebaseMessagingService 创建 FcmHelper 类。

<!--Fcm Starts-->

        <service
            android:name="google_classes.FcmHelper"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@drawable/ic_noti" />

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_color"
            android:resource="@color/black" />

        <meta-data android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="@string/default_notification_channel_id" />

        <meta-data
           android:name="firebase_messaging_auto_init_enabled"
           android:value="true" />

        <!--Fcm End-->

Answer 2

试试这个：

    <uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/>

并在应用标签下添加：

<service android:name=".FirebaseService"
    android:permission="com.google.android.c2dm.permission.SEND">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT"/>
        <action android:name="com.google.android.c2dm.intent.RECEIVE"/>

    </intent-filter>


</service>
<activity android:name=".MainActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

根据要求更改类名。