PopupWindow 全屏问题两种解决方案

最新推荐文章于 2022-03-08 10:50:33 发布

原创最新推荐文章于 2022-03-08 10:50:33 发布 · 3.7k 阅读

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当使用PopupWindow并调用showAsDropDown方法时，遇到了意外地填充整个屏幕的问题。解决方法包括计算PopupWindow的高度为LinearLayout高度减去控件底部高度，并重写showAsDropDown方法以实现正常显示。

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点击调用showAsDropDown(view)后,PopupWindow 填充了整个屏幕，如图所示

解决后正常显示，如图2所示

解决办法：

计算PopupWindow要显示的高度

popupwindow的高度= LinearLayout的高度 - 控件的bottom的高度

void showOrderItemsPPWindow() {
        final View contentView = LayoutInflater.from(DeliveOrderActivity.this).inflate(R.layout.ppw_order_pick_type, null, false);
//       popupwindow的高度 = LinearLayout的高度 - 控件的bottom的高度
        int height = deliveLlayout.getHeight() - orderItemBtn.getBottom();
        final PopupWindow window = new PopupWindow(contentView, LinearLayout.LayoutParams.MATCH_PARENT, height);



        window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        window.setOutsideTouchable(true);
        window.setTouchable(true);
        window.showAsDropDown(orderItemBtn, 0, 0, Gravity.BOTTOM);
        window.setBackgroundDrawable(new ColorDrawable(Color.BLACK));

        LinearLayout linearLayout = contentView.findViewById(R.id.full_llayout);
        linearLayout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                window.dismiss();
            }
        });
        window.setOnDismissListener(new PopupWindow.OnDismissListener() {
            @Override
            public void onDismiss() {

            }
        });
    }

重写Popupwindow的showAsDropDown方法

public class MPopupWindow extends PopupWindow {


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

    @Override
    public void showAsDropDown(View anchor) {
        if (Build.VERSION.SDK_INT >= 24){
            Rect ew = new Rect();
            anchor.getGlobalVisibleRect(ew);
            int height = anchor.getResources().getDisplayMetrics().heightPixels - ew.top;
            setHeight(height);
        }

        super.showAsDropDown(anchor);
    }
}

    void showOrderItemsPPWindow() {
        final View contentView = LayoutInflater.from(DeliveOrderActivity.this).inflate(R.layout.ppw_order_pick_type, null, false);
        final MPopupWindow window = new MPopupWindow(contentView, LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
        window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        window.setOutsideTouchable(true);
        window.setTouchable(true);
        window.showAsDropDown(orderItemBtn);
        window.setBackgroundDrawable(new ColorDrawable(Color.BLACK));

        LinearLayout linearLayout = contentView.findViewById(R.id.full_llayout);
        linearLayout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                window.dismiss();
            }
        });
        window.setOnDismissListener(new PopupWindow.OnDismissListener() {
            @Override
            public void onDismiss() {

            }
        });
    }