震驚 Android7.0居然出現這樣的bug（popupwindow展示充滿屏幕，而不是在view下方 ）

我的一個頁面中用到了popupwindow，之前都沒問題的，測試跑來說android7.0不對了，把原來的button擋住了（點擊button彈出popupwindow）

重寫showAsDropDown(view)就解決了。

public class SupportPopupWindow extends PopupWindow {

    public SupportPopupWindow(View contentView, int width, int height){
        super(contentView,width,height);
    }

    @Override
    public void showAsDropDown(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);
    }

    @Override
    public void showAsDropDown(View anchor, int xoff, int yoff) {
        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, xoff, yoff);
    }
}