我正在使用 Xamarin.Fomrs PLC项目,我正在尝试显示通知甚至应用程序已关闭,现在它在应用程序运行时工作正常,因为我将通知线程放在{{ 1}},即使应用已关闭,我应该怎样做才能使通知正常工作
以下简要说明代码:
OnStart()
答案 0 :(得分:1)
我正在使用Xamarin.Fomrs PLC项目,我试图显示通知甚至应用已关闭
您需要Register a start Service并在此启动服务中显示通知:
[Service(Exported =true,Name = "demo.winffee.MYSERVICE")]
[IntentFilter(new string[] {"demo.winffee.MYSERVICE"})]
public class MyService : Service
{
public override IBinder OnBind(Intent intent)
{
return null;
}
[return: GeneratedEnum]
public override StartCommandResult OnStartCommand(Intent intent, [GeneratedEnum] StartCommandFlags flags, int startId)
{
string msg=intent.GetStringExtra("msg");
if (!String.IsNullOrEmpty(msg)) {
Toast.MakeText(this, msg, ToastLength.Short).Show();
}
return base.OnStartCommand(intent, flags, startId);
}
public override void OnDestroy()
{
base.OnDestroy();
}
}
注意:[Service(Exported =true,Name = "demo.winffee.MYSERVICE")]
是将此服务从应用程序中调用的必要部分。
从其他应用程序调用该服务:
Intent intent = new Intent("demo.winffee.MYSERVICE");
intent.PutExtra("msg", "this is the text message from another application");
StartService(intent);