Android similar to QQ account landing dropdown box effect implementation (with source)

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• Part of the source

//settings for PopupwindowDownarroimageview.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View arg0) {//Definition PopupwindowPopupwindow =NewPopupwindow (mainactivity. This);//Set widthPopupwindow.setwidth (Inputedittext.getwidth ());//Set the height of the PopupwindowPopupwindow.setheight ( $);//Fill in content for PopupwindowPopupwindow.setcontentview (ListView);//Click outside the Popupwindow to automatically turn off PopupwindowPopupwindow.setoutsidetouchable (true);//Set pop-up window, display the locationPopupwindow.showasdropdown (Inputedittext,0,0); }        });

// 初始化listviewprivatevoidinitListView() {        // TODO 自动生成的方法存根        new ListView(this);        // 设置背景色        listView.setBackgroundResource(R.drawable.listview_background);        // 分隔线设置为null        listView.setDivider(null);        // 设置滚动条为false        listView.setVerticalScrollBarEnabled(false);        listView.setAdapter(new MyListAdapter());    }

//MylistadapterPrivate  class mylistadapter extends baseadapter {        @Override         Public int GetCount() {//TODO auto-generated method stub            returnMsglist.size (); }@Override         PublicObjectGetItem(intARG0) {//TODO auto-generated method stub            return NULL; }@Override         Public Long Getitemid(intARG0) {//TODO auto-generated method stub            return 0; }@Override         PublicViewGetView(Final intarg0, View arg1, ViewGroup arg2) {//TODO auto-generated method stubViewholder Houder;if(Arg1 = =NULL) {arg1 = View.inflate (Getapplicationcontext (), R.layout.list_item,NULL); Houder =NewViewholder ();                Houder.deleteimageview = (ImageView) Arg1.findviewbyid (r.id.delete);                Houder.tv_msgtextview = (TextView) Arg1.findviewbyid (R.id.tv_list_item);            Arg1.settag (Houder); }Else{Houder = (Viewholder) arg1.gettag ();            } houder.tv_msgTextView.setText (Msglist.get (arg0)); Houder.deleteImageView.setOnClickListener (NewOnclicklistener () {@Override                 Public void OnClick(View v) {//delete the corresponding entryMsglist.remove (arg0);//Refresh ListViewMylistadapter. This. notifydatasetchanged ();            }            }); Arg1.setonclicklistener (NewOnclicklistener () {@Override                 Public void OnClick(View v) {//Set Input boxInputedittext.settext (Msglist.get (arg0));//Hide PopupwindowPopupwindow.dismiss (); }            });returnArg1; }    }Private  class viewholder {TextView Tv_msgtextview;    ImageView Deleteimageview; }

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Android similar to QQ account landing dropdown box effect implementation (with source)