Android PopupWindow的使用

项目用到的，实现了需要的功能，备用

 // 屏幕的width    private int mScreenWidth;    // 屏幕的height    private int mScreenHeight;    //创建一个popwindows    private PopupWindow mPopupWindow;//弹出pop的控件监听    @OnClick(R.id.service_firm)    public void service_firm(){        getPopupWindowInstance();        mPopupWindow.showAsDropDown(mService_firm);    }    /*     * 获取PopupWindow实例     */    private void getPopupWindowInstance() {        if (null != mPopupWindow) {            mPopupWindow.dismiss();            return;        } else {            initPopuptWindow();        }    }    /*     * 创建PopupWindow     */    private void initPopuptWindow() {        LayoutInflater layoutInflater = LayoutInflater.from(this);        View view = layoutInflater.inflate(R.layout.pop_gongsi, null);        ListView mLv_gongsi = (ListView) view.findViewById(R.id.lv_list);        // 获取屏幕和PopupWindow的width和height        /*mScreenWidth = getWindowManager().getDefaultDisplay().getWidth();        mScreenHeight = getWindowManager().getDefaultDisplay().getHeight();*/        FuWuGongSiAdapter adapter_fuwugongsi = new FuWuGongSiAdapter(this);        mLv_gongsi.setAdapter(adapter_fuwugongsi);        adapter_fuwugongsi.setData(list_name);        adapter_fuwugongsi.notifyDataSetChanged();        mLv_gongsi.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                GongSiBean gongsi = list_name.get(0);                mService_firm.setText(gongsi.getCompanyInfoShortname());                mPopupWindow.dismiss();            }        });<pre name="code" class="java">        // 参数1：contentView 指定PopupWindow的内容        // 参数2：width 指定PopupWindow的width        // 参数3：height 指定PopupWindow的height        mPopupWindow = new PopupWindow(view,mService_firm.getWidth() , LinearLayout.LayoutParams.WRAP_CONTENT);        mPopupWindow.setTouchable(true);        mPopupWindow.setTouchInterceptor(new View.OnTouchListener() {            @Override            public boolean onTouch(View v, MotionEvent event) {                Log.i("mengdd", "onTouch : ");                return false;                // 这里如果返回true的话，touch事件将被拦截，拦截后 PopupWindow的onTouchEvent不被调用，这样点击外部区域无法dismiss            }        });        // 设置PopupWindow的背景，无论是点击外部区域还是Back键都无法dismiss弹框        mPopupWindow.setFocusable(true);        mPopupWindow.setOutsideTouchable(true);        mPopupWindow.update();        mPopupWindow.setBackgroundDrawable(new BitmapDrawable());    }