Android 实现点击在当前位置上方显示自定义弹框

TextView的点击事件
效果图

• 布局

        TextView tv=findViewById(R.id.text);
//        点击事件
        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                showPopWindows(view);
            }
        });


//写一个方法
        private void showPopWindows(View v) {
            
            View mPopView = LayoutInflater.from(this).inflate(R.layout.item, null);
            final PopupWindow mPopWindow = new PopupWindow(mPopView, ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT, true);
            
            mPopWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
            
            mPopView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
            int popupWidth = mPopView.getMeasuredWidth();
            int popupHeight = mPopView.getMeasuredHeight();
            
            int[] location = new int[2];
            v.getLocationOnScreen(location);
            
            mPopWindow.showAtLocation(v, Gravity.NO_GRAVITY, (location[0] + v.getWidth() / 2) - popupWidth / 2, location[1]
                    - popupHeight);
            mPopWindow.update();
            final String copyTxt = (String) v.getTag();
            mPopView.findViewById(R.id.tv_copy_txt).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (mPopWindow != null) {
                        mPopWindow.dismiss();
                    }
                }
            });
    }

• item布局

android:background="@drawable/aa 自己随便给背景图