PopupWindow 防微信弹出右 侧窗体(继承PopupWindow )

1, pop自定义

 public class SelectPicPopupWindow extends PopupWindow { 

    private Button btn_take_photo, btn_pick_photo, btn_cancel;
    private View mMenuView; 

    public SelectPicPopupWindow(Activity context,OnClickListener itemsOnClick) {  //暴露出点击事件
        super(context);
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mMenuView = inflater.inflate(R.layout.alert_dialog, null);
        btn_take_photo = (Button) mMenuView.findViewById(R.id.btn_take_photo);
        btn_pick_photo = (Button) mMenuView.findViewById(R.id.btn_pick_photo);
        btn_cancel = (Button) mMenuView.findViewById(R.id.btn_cancel);
        //取消按钮
        btn_cancel.setOnClickListener(new OnClickListener() { 

            public void onClick(View v) {
                //销毁弹出框
                dismiss();
            }
        });
        //设置按钮监听
        btn_pick_photo.setOnClickListener(itemsOnClick);
        btn_take_photo.setOnClickListener(itemsOnClick);
        //设置SelectPicPopupWindow的View
        this.setContentView(mMenuView);
        //设置SelectPicPopupWindow弹出窗体的宽
        this.setWidth(LayoutParams.FILL_PARENT);
        //设置SelectPicPopupWindow弹出窗体的高
        this.setHeight(LayoutParams.WRAP_CONTENT);
        //设置SelectPicPopupWindow弹出窗体可点击 

        this.setFocusable(true);
        //设置SelectPicPopupWindow弹出窗体动画效果
        this.setAnimationStyle(R.style.AnimBottom);
        //实例化一个ColorDrawable颜色为半透明
        ColorDrawable dw = new ColorDrawable(0xb0000000);
        //设置SelectPicPopupWindow弹出窗体的背景
        this.setBackgroundDrawable(dw);
        //mMenuView添加OnTouchListener监听判断获取触屏位置如果在选择框外面则销毁弹出框
        mMenuView.setOnTouchListener(new OnTouchListener() { 

            public boolean onTouch(View v, MotionEvent event) { 

                int height = mMenuView.findViewById(R.id.pop_layout).getTop(); //高度
                int y=(int) event.getY();
                if(event.getAction()==MotionEvent.ACTION_UP){
                    if(y<height){
                        dismiss();
                    }
                }
                return true;
            }
        }); 

    } 

 } 

2 ,使用的时候

//把文字控件添加监听，点击弹出自定义窗口
         tv.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                //实例化SelectPicPopupWindow
                menuWindow = new SelectPicPopupWindow(MainActivity.this, itemsOnClick);
                //显示窗口
                menuWindow.showAtLocation(MainActivity.this.findViewById(R.id.main), Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0); //设置layout在PopupWindow中显示的位置
            }
        });
     }
//其中的mian  id 必须在layout 中写出，不然，找不到id 就不会显示在屏幕中。
     //为弹出窗口实现监听类
     private OnClickListener  itemsOnClick = new OnClickListener(){   //pop的点击事件

        public void onClick(View v) {
            menuWindow.dismiss();
            switch (v.getId()) {
            case R.id.btn_take_photo:
                break;
            case R.id.btn_pick_photo:
                break;
            default:
                break;
            } 

        } 

     };