popupwindow

PopupWindow popupWindow = new PopupWindow(vkey, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT) {
            
             * 在安卓7.0以后popupwindow会因为弹出层设置显示比例导致不能显示在某个控件的后面，下面的方法
             * 重写以后可以
             * @param anchor
             */
            
            public void (View anchor) {
                if (Build.VERSION.SDK_INT >= 24) {
                    Rect rect = new Rect();
                    anchor.getGlobalVisibleRect(rect);
                    int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;
                    setHeight(h);
                }
                super.showAsDropDown(anchor);
            }
        };