Android Click on a ListView (or GridView) item to make its inside TextView discolored, click on another to restore the original color

Today is a project, is to do video app, if the TV show has many episodes, click on an item, play different episodes, to have a click effect, and the default is to choose the first one. It took a while, and I felt a little difficult.

Degrees, and now share with you, here is the effect shows:

This class is an example of the main class:

<span style= "FONT-SIZE:14PX;"    >public Final class Mainactivity extends Activity {private GridView GridView;    Private arraylist< string> numberlist=new arraylist<string> ();        public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        "Mmediaitem.mdirector---------------" +videodetailactivity_phone.mediaitem.mdes);                GridView = (GridView) Findviewbyid (R.id.video_detail_series_gridview);        for (int j = 0; J <; J + +) {Numberlist.add ("" + (j+1));        } final Seriesfragmentdataadapter seriesadapter = new Seriesfragmentdataadapter (this,numberlist);                Gridview.setadapter (Seriesadapter); Gridview.setonitemclicklistener (New Onitemclicklistener () {@Override public void Onitemclick (adapte Rview<?> Parent, view view, int position, long ID) {//TODO Auto-generated method stub//This sentence is to inform adapter change the selected position seriesadapter.clearselection (position);//The key is this sentence,            Passion, it can let the ListView changed the data reloaded again, to achieve the effect you want seriesadapter.notifydatasetchanged ();    }        });    }} This class is an example of Adapter:public class Seriesfragmentdataadapter extends Baseadapter {private Layoutinflater inflater;    Private arraylist<string> numberlist=new arraylist<string> ();    private int selectedposition=0; Public Seriesfragmentdataadapter (context context, arraylist<string> numberlist) {inflater = Layou        Tinflater.from (context);    This.numberlist = numberlist;    } @Override public int getcount () {//TODO auto-generated Method stub return Numberlist.size (); } @Override public Object getItem (int position) {//TODO auto-generated method stub return NumberList    . get (position); } @Override public long getitemid (int position) {//TODO Auto-generated method stub return position;    }//This sentence is the click of the ListView position, passed over public void clearselection (int position) {selectedposition = position; } @Override public View getView (int position, view Convertview, ViewGroup parent) {//TODO auto-generated Me                Thod stub viewholder holder;            if (Convertview = = null) {holder = new Viewholder ();            Convertview = inflater.inflate (R.layout.global_series_item, NULL);            Holder.textview = (TextView) convertview. Findviewbyid (R.id.video_detail_series_item_text);        Convertview.settag (holder);        } holder = (Viewholder) convertview.gettag ();        if (Numberlist.get (position). Length () > 0) {holder.textview.setText (Numberlist.get (position)); }//Decide which item to click on, then judge, let his textview discoloration if (selectedposition==position) {Holder.textview.setTextColor (C                Olor.parsecolor ("#ff6501")); }else{            Holder.textview.setTextColor (Color.parsecolor ("#404040"));    } return Convertview;    } public class Viewholder {public TextView TextView; }}</span>

Android Click on a ListView (or GridView) item to make its inside TextView discolored, click on another to restore the original color