PopupWindow全屏显示

setWidth(WindowManager.LayoutParams.MATCH_PARENT);
        setHeight(WindowManager.LayoutParams.MATCH_PARENT);
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
            setClippingEnabled(false);
        } else {
            setHeight(ScreenUtil.getScreenHeight());
        }