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我有一個Xamarin Android應用程序。收到推送通知後，如果應用程序處於活動狀態且處於前臺狀態，則可以打開該應用程序。但是，如果應用程序在後臺或被殺，應用程序將無法打開。收到Firebase雲消息傳遞後無法打開我的Android後臺應用程序（Xamarin）
已經按照下面的頁面中所述的Xamarin指導原則進行了操作，但是提供的代碼也不起作用。 https://developer.xamarin.com/guides/android/application_fundamentals/notifications/remote-notifications-with-fcm/
我想在接收到FCM推送通知時採取措施（閱讀打開）。如果應用程序已經打開，可以成功完成。我錯過了什麼嗎？具體內容如下
AndroidManifest.xml中
<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>
FirebaseInstanceIdService實施
[Service]
[IntentFilter(new[] { "com.google.firebase.INSTANCE_ID_EVENT" })]
public class MyFirebaseIIDService : FirebaseInstanceIdService
{
const string TAG = "MyFirebaseIIDService";
public override void OnTokenRefresh()
{
var refreshedToken = FirebaseInstanceId.Instance.Token;
Log.Debug(TAG, "Refreshed token: " + refreshedToken);
SendRegistrationToAppServer(refreshedToken);
}
void SendRegistrationToAppServer(string token)
{
// Add custom implementation here as needed.
var android_id = Android.OS.Build.Serial;
App.AccessCode(token, android_id);
}
}
FirebaseMessagingService實施
[Service]
[IntentFilter(new [] { "com.google.firebase.MESSAGING_EVENT" })]
public class MyFCMListenerService: FirebaseMessagingService {
Intent intent;
public override void OnMessageReceived(RemoteMessage message) {
Thread thread = new Thread(() => {
Log.Debug("MyGcmListenerService", "Message: thread");
PushHandler pushHandler = PushHandler.GetPushHander();
pushHandler.OnReceiveNewNotification(msg, pushType.ToString());
});
thread.Start();
}
}
Package.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="AndHUD" version="1.2.0" targetFramework="MonoAndroid60" />
<package id="Plugin.CurrentActivity" version="1.0.1" targetFramework="monoandroid71" />
<package id="SQLite.Net.Core-PCL" version="3.1.1" targetFramework="MonoAndroid60" />
<package id="SQLite.Net-PCL" version="3.1.1" targetFramework="MonoAndroid60" />
<package id="Xam.Plugin.Connectivity" version="3.0.2" targetFramework="monoandroid71" />
<package id="Xam.Plugin.DeviceInfo" version="3.0.1" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Animated.Vector.Drawable" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Annotations" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Compat" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Core.UI" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Core.Utils" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Design" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Fragment" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Media.Compat" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Transition" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v4" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v7.AppCompat" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v7.CardView" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v7.MediaRouter" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v7.Palette" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.v7.RecyclerView" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Android.Support.Vector.Drawable" version="25.4.0.2" targetFramework="monoandroid71" />
<package id="Xamarin.Build.Download" version="0.4.7" targetFramework="monoandroid71" />
<package id="Xamarin.Firebase.Common" version="42.1021.1" targetFramework="monoandroid71" />
<package id="Xamarin.Firebase.Iid" version="42.1021.1" targetFramework="monoandroid71" />
<package id="Xamarin.Firebase.Messaging" version="42.1021.1" targetFramework="monoandroid71" />
<package id="Xamarin.Forms" version="2.3.4.270" targetFramework="monoandroid71" />
<package id="Xamarin.GooglePlayServices.Base" version="42.1021.1" targetFramework="monoandroid71" />
<package id="Xamarin.GooglePlayServices.Basement" version="42.1021.1" targetFramework="monoandroid71" />
<package id="Xamarin.GooglePlayServices.Tasks" version="42.1021.1" targetFramework="monoandroid71" />
</packages>
此外，如果我使用規定的配置FirebaseApp.InitializeApp(this); 然後無法打開應用程序，即使在前臺。爲了解決這個問題，已經使用 google-services.json
我做這行的配置
var options = new FirebaseOptions.Builder()
.SetApplicationId("1:******:*****")
.SetApiKey("*******-a6-cEUkjxB6EqiO9zmkNcmu")
//.SetDatabaseUrl("Firebase-Database-Url")
.SetGcmSenderId("******")
.Build();
var firebaseApp = FirebaseApp.InitializeApp(this, options);
// Generate token in background thread
Task.Run(() => {
var instanceID = FirebaseInstanceId.Instance;
instanceID.DeleteInstanceId();
var iid1 = instanceID.Token;
var iid2 = instanceID.GetToken("*****", Firebase.Messaging.FirebaseMessaging.InstanceIdScope);
});
在你的代碼中沒有發現任何明顯的錯誤，你的'PushHandler'是什麼？您是否嘗試過官方演示[Android FCM Remote Notifications]（https://github.com/xamarin/monodroid-samples/tree/master/Firebase/FCMNotifications）？ –
是的，我試過官方演示，但是，演示它在後臺無法正常工作。 Push處理程序根據數據有一些修改推送的功能。 –