弹出窗口：PopupWindow

在软件的开发之中，用户可以使用PopupWindow组件，在窗口上弹出一个小窗口以进行一些操作

private class OnClickListenerImpl implements OnClickListener {    // 设置监听
        @Override
        public void onClick(View view) {
            LayoutInflater inflater = LayoutInflater
                .from(MyPopupWindowDemo.this);// 取得LayoutInflater对象
            MyPopupWindowDemo.this.popView = inflater.inflate(
                R.layout.popwindow, null);    // 读取布局管理器
            MyPopupWindowDemo.this.popWin = new PopupWindow(popView, 300, 220,
                    true);        // 实例化PopupWindow
            MyPopupWindowDemo.this.changestatus = (RadioGroup) popView
                .findViewById(R.id.changestatus); // 取得组件
            MyPopupWindowDemo.this.cancel = (Button) popView
                .findViewById(R.id.cancel); // 取得组件
            MyPopupWindowDemo.this.changestatus
                .setOnCheckedChangeListener(
                    new OnCheckedChangeListenerImpl());    // 设置监听
            MyPopupWindowDemo.this.cancel
                .setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {                            MyPopupWindowDemo.this.popWin.dismiss(); // 关闭弹出窗口
                        }
                    });
            MyPopupWindowDemo.this.popWin.showAtLocation(
                    MyPopupWindowDemo.this.popbut,
                    Gravity.CENTER, 0, 0);    // 显示弹出窗口
        }
    }

020718_弹出窗口：PopupWindow.ppt