在LockState中通过PhoneScreen显示Toast

Question

我们的目标是在发生呼号时展示祝酒词.当设备被锁定并发生接收呼叫时,这将不起作用.然后在" 锁定的全屏幕进入呼叫视图" 后面可以看到吐司.

我们尝试了不同的approches,结果相同:

• PhoneCallListener/BroadCastReciver
• 而不是吐司,使用一些新的Intent与一些标志(ShowOnLockScreen等)

允许:

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

PhoneCallListener的设置:

public class PhoneCallDetector : PhoneStateListener
{
    public override void OnCallStateChanged(CallState state, string incomingNumber)
    {
        ShowToast(incomingNumber);
        base.OnCallStateChanged(state, incomingNumber);
    }


    private void ShowToast(string phonenumber)
    {
        Toast toast = Toast.MakeText(Application.Context, phonenumber, ToastLength.Long);
        toast.SetGravity(GravityFlags.Center, 0, 0);
        toast.Show();
    }
}

我们知道一些可以通过" 锁定的全屏嵌入调用视图"成功显示toast的应用程序,但是它们是用java编写的......它们也没有做任何特殊的事情,然后Toast.MakeText(....).

编辑: => PhoneStateListener在后台生命.从服务开始.

服务如何开始？

Intent serviceStart = new Intent(context, typeof(PhoneCallService));
context.StartService(serviceStart);

如何调用PhoneCallDetector？

 var phoneCallDetector = m_scope.Resolve<PhoneCallDetector>();
 var tm = (TelephonyManager)GetSystemService(TelephonyService);
 tm.Listen(phoneCallDetector, PhoneStateListenerFlags.CallState);

谢谢你帮助我:-)

Answer 1

您需要阅读本文并参考此链接。

Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS = "lock_screen_allow_private_notifications"

Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS = "lock_screen_show_notifications"


int ShowAll = Settings.Secure.getInt(getContentResolver(),"lock_screen_allow_private_notifications", -1); 
int NotificationEnable = Settings.Secure.getInt(getContentResolver(),"lock_screen_show_notifications", -1); 

if(ShowAll > 0 && NotificationEnable > 0){
//post notification
}

另请参阅此部分：-锁定屏幕通知