在锁定屏幕上显示弹出窗口

Question

I have implemented a caller ID feature where when the screen is locked it should open the lock and show the popup with the name of the person calling.

this is the code i've added in the onCreate() of the PopupActivity.

 getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

I've also added the permissions

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

This works fine when the phone is not password/pattern protected.However it shows a black background to the popup window when the device is password/pattern protected disabling the user from attending/rejecting the call.

Answer 1

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |PixelFormat.TRANSLUCENT);

这似乎对我有用