Window type error

Question

I\'m creating a audio swipe card reader but I\'m getting an error with windows. I can\'t trace what causing the error in my codes. Can anyone hel me to point what causing the er

Answer 1

Problem seems to be in onAttachedToWindow(). Change the function as below and give it a try.

public void onAttachedToWindow() {
        this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
        super.onAttachedToWindow();
}