android - Xamarin Android 应用程序在收到远程通知时自动打开

Question

更新 3:已解决!

问题与 FirebaseService、设置或负载无关。问题出在应用程序代码中......我们的代码有这样的东西(从应用程序继承):

 ParentDroidApplication : Application

在该类的 OnCreate 方法中选择要使用的 Activity 并调用“StartActivity”。我将此开关移至 MainActivity，问题已解决。

更新 2:

Android list (已删除服务标签):

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.visma.vfsmobileparentapp" android:versionName="1.0" android:installLocation="internalOnly" android:versionCode="46">
    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="26" />
    <uses-permission android:name="android.permission.INTERNET" />
    <application android:allowBackup="true" android:theme="@style/Theme.AppCompat.Light" android:label="Min skole" android:icon="@drawable/ic_launcher" android:name="Min skole">
        <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
        <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
                <category android:name="${applicationId}" />
            </intent-filter>
        </receiver>
        <meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/ic_launcher" />
    </application>
</manifest>

有效负载(添加了 content_available 和优先级):

{
 "to" : "token",
 "collapse_key" : "type_a",
 "notification" : {
     "body" : "First Notification",
     "title": "Collapsing A"
 },
 "data" : {
     "body" : "First Notification",
     "title": "Collapsing A"
 },
 "content_available": true,
 "priority": "high"
}

结果相同:应用程序在远程通知后自动打开 :(

更新:

我在 OnMessaggeReceive 方法中为我的主要 Activity 添加了 Intent 、默认声音和毫秒作为通知编号的整数(您可以在下面的代码中看到)。 我试过删除

<service android:name=".MyFirebaseMessagingService" android:stopWithTask="false">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

我没有收到任何通知，但应用程序仍在打开。 Firebase 似乎正在正常工作。但是应用它会 self 施展魔法

我尝试将 Firebase 降级到版本 42.1021.1。结果是一样的

问题

我们正在使用 Xamarin 开发移动应用程序。我们需要通知，因此我们开始使用 Firebase 云消息传递。所有消息(通知)都在工作、接收，甚至在 iOS 中更新徽章，但是......Android 的一个问题:

如果应用已关闭(从应用列表中滑动)并收到远程通知，它会自动打开。我想避免这种情况。后台或前台模式按预期工作。

我的 Android list :

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.app" android:versionName="1.0" android:installLocation="internalOnly" android:versionCode="46">
<uses-sdk android:minSdkVersion="23" android:targetSdkVersion="26" />
<uses-permission android:name="android.permission.INTERNET" />
<application android:allowBackup="true" android:theme="@style/Theme.AppCompat.Light" android:label="App" android:icon="@drawable/ic_launcher" android:name="App">
  <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
  <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
    <intent-filter>
      <action android:name="com.google.android.c2dm.intent.RECEIVE" />
      <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
      <category android:name="${applicationId}" />
    </intent-filter>
  </receiver>
<meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/ic_launcher" />
</application>
<service android:name=".MyFirebaseMessagingService" android:stopWithTask="true">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
</manifest>

我的 FirebaseMessagingService.cs:

[Service]
[IntentFilter(new[] { "com.google.firebase.MESSAGING_EVENT" })]
public class MyFirebaseMessagingService : FirebaseMessagingService
{
    public override void OnMessageReceived(RemoteMessage message)
    {
        SendNotification("title", "body"); //just for testing
    }

    public void SendNotification(string title, string body)
    {
         var intent = new Intent(this, typeof(LoginActivity));

        var pendingIntent = PendingIntent.GetActivity(this, 0, intent, PendingIntentFlags.OneShot);
        var defaultSoundUri = RingtoneManager.GetDefaultUri(RingtoneType.Notification);

        var style = new Android.Support.V4.App.NotificationCompat.BigTextStyle();
        style.BigText(body);

        Bitmap largeIcon = BitmapFactory.DecodeResource(Resources, Resource.Drawable.ic_launcher);
        var notificationBuilder =
            new Android.Support.V4.App.NotificationCompat.Builder(this)
                .SetLargeIcon(largeIcon)
                .SetSmallIcon(Resource.Drawable.ic_launcher)
                .SetContentTitle(title)
                .SetContentText(body)
                .SetStyle(style)
                .SetAutoCancel(true)
                .SetSound(defaultSoundUri)
                .SetContentIntent(pendingIntent)
                .SetVisibility((int)NotificationVisibility.Public);

        var notificationManager = NotificationManager.FromContext(this);
        notificationManager.Notify(DateTime.Now.Millisecond, notificationBuilder.Build());
    }
}

我尝试更改 list 值、尝试模拟器、设备，我发送了不同的有效负载:

通知和数据:

{
"to" : "token",
"notification" : {
"body" : "First Notification",
"title": "Collapsing A"
},
"data" : {
"body" : "First Notification",
"title": "Collapsing A",
}
}

仅通知:

{
"to" : "token",
"notification" : { 
"body" : "First Notification", 
"title": "Collapsing A" 
}
}

只有数据:

{
"to" : "token", 
"data" : {
"body" : "First Notification",
"title": "Collapsing A"
}
}

在所有情况下，通知都会在应用关闭时自动接收和打开应用。如何避免自动打开？我只需要通知。有什么想法吗？

nuget 包:

Xamaring.Firebase.Messaging - 60.1142.1
Xamarin.Firebase.Code - 60.1142.1
Xamarin.Firebase.Common - 60.1142.1

在 Android 6 和 Android 7 设备(三星)上测试

Answer 1

你需要在这里定义Activity，它必须在你点击通知时打开。

    var intent = new Intent(this, typeof(YourActivity));
    intent.AddFlags(ActivityFlags.ClearTop);
    //sent RemoteMessage message data to your activity if you need
    //intent.PutExtra("User", JsonConvert.SerializeObject(user));
    var pendingIntent = PendingIntent.GetActivity(this, GenerateRandom(), intent, PendingIntentFlags.OneShot);
    var notificationBuilder = new Notification.Builder(this)
            .SetSmallIcon(Resource.Drawable.myIcon)
            .SetContentTitle(user.Organization)
            .SetSubText(myModuleName)
            .SetContentText(BodyText)
            .SetAutoCancel(true)
            .SetContentIntent(pendingIntent)
            .Build();
    var notificationManager = (NotificationManager)GetSystemService(Context.NotificationService);
    var notification = RingtoneManager.GetDefaultUri(RingtoneType.Notification);
   //this is for sound of notification
    var mp = MediaPlayer.Create(ApplicationContext, notification);
    mp.Start();
    notificationManager.Notify(GenerateRandom(), notificationBuilder);

只为通知提供唯一的 Id，这样它们就不会重叠

private int GenerateRandom()
{
    var rn = new Java.Util.Random();
    int n = 1000 - 1233 + 1;
    int i = rn.NextInt() % n;
    return 1000 + i;
}