英文:
Xamarin Forms push notification not showing up in Android notification bar
问题
我有一个奇怪的问题。我有一个干净的Xamarin Forms项目，使用Plugin.FirebasePushNotification，在iOS上完美运行。奇怪的问题是，它在Android上也能工作，当我从Postman或Firebase发送推送时，会触发OnNotificationReceived，但通知栏中没有任何内容，也没有任何推送声音。
我尝试关闭应用程序，但什么都没有发生，我还尝试“杀死”应用程序，但情况一样。只有当应用程序处于调试模式时，我才能看到OnNotificationReceived实际上已被触发，显示了我发送的消息，所以我的发送负载没有问题。
MainActivity.cs（Android项目）
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
FirebaseApp.InitializeApp(this);
FirebasePushNotificationManager.Initialize(this, true);
LoadApplication(new App());
}
MainPage.xaml.cs（共享项目）
public MainPage()
{
InitializeComponent();
//注册推送
CrossFirebasePushNotification.Current.RegisterForPushNotifications();
CrossFirebasePushNotification.Current.Subscribe("TESTINGPUSH");
}
英文:
I have a weird problem. I have a clean Xamarin Forms project using Plugin.FirebasePushNotification which is working flawless on iOS. The wierd problem is that it is working on Android as well, OnNotificationReceived is triggered when I send a push from Postman or Firebase however nothing shows up in the notification bar nor does any push sound.
I have tried closing the app yet noting, and I have also tried to "kill" the app but same thing happends. Only when I have app in debug mode I can see the OnNotificationReceived is actually beeing triggered with the message I've sent so there is nothing wrong with my sending payload.
MainActivity.cs (Android-project)
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
FirebaseApp.InitializeApp(this);
FirebasePushNotificationManager.Initialize(this, true);
LoadApplication(new App());
}
MainPage.xaml.cs (Shared-project)
public MainPage()
{
InitializeComponent();
//Register for push
CrossFirebasePushNotification.Current.RegisterForPushNotifications();
CrossFirebasePushNotification.Current.Subscribe("TESTINGPUSH");
}
答案1
得分: 1
我终于弄清楚了！
虽然我在我的 manifest.xml 中使用了正确的权限，但它没有考虑到。
<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
我在 MainActivity 中进行了重写，然后它开始按预期工作。
protected override void OnStart()
{
base.OnStart();
const int requestLocationId = 0;
string[] notiPermission =
{
Manifest.Permission.PostNotifications
};
if ((int)Build.VERSION.SdkInt < 33) return;
if (this.CheckSelfPermission(Manifest.Permission.PostNotifications) != Permission.Granted)
{
this.RequestPermissions(notiPermission, requestLocationId);
}
}
英文:
I finally figured it out!
although I did use the correct permission in my manifest.xml it didnt take it into account.
<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
I did an override in MainActivity and it started to work as expected.
protected override void OnStart()
{
base.OnStart();
const int requestLocationId = 0;
string[] notiPermission =
{
Manifest.Permission.PostNotifications
};
if ((int)Build.VERSION.SdkInt < 33) return;
if (this.CheckSelfPermission(Manifest.Permission.PostNotifications) != Permission.Granted)
{
this.RequestPermissions(notiPermission, requestLocationId);
}
}
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