android - How to make an Intent in Alertdialog clicking ListView item? -

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hi,

i'm trying these steps:
1)select item(song_title) on listview
2)once item selected alertdialog has started(with list of "listen" , "download")
3)selected 1 of 2 items on alertdialog
4)create intent start activity(download file)

don't understand how implement steps 3 , 4.

here part of code itemclicklistener:

ls.setonitemclicklistener(new onitemclicklistener() {      @override     public void onitemclick(adapterview<?> parent, view view, int position, long id) {         log.d(null, ". position: " + position );         showdialog(position);     }     });

and part creating dialog

protected dialog oncreatedialog(int id){  alertdialog.builder adb = new alertdialog.builder(mainactivity.this); final string[] service = {"play music", "download"}; adb.settitle("choose service");     switch(id){     case 0:             log.d(null, service[id] + ". position: " );             adb.setitems(service, myclicklistener);             break;     case 1:             log.d(null, service[id] + ". position: " );             adb.setitems(service, myclicklistener);      break; }  return adb.create(); }

it works 2 items(songs), want alter code case when there more 2 items.

answering on question )

here code work me:

ls.setonitemclicklistener(new onitemclicklistener() {              @override             public void onitemclick(adapterview<?> parent, view view, int position, long id) {                 final int selectedposition = position;                 final string[] service = {"play music", "download"};                 alertdialog.builder adb = new alertdialog.builder(mainactivity.this);                 adb.settitle("choose service");                 adb.setitems(service, new onclicklistener() {                      @override                     public void onclick(dialoginterface dialog, int which) {                         switch(which){                         case 0:                             intent playintent = new intent(getapplicationcontext(), playmusicactivity.class);                             playintent.putextra("songindex", selectedposition);                             log.d(null, + ". position: " + selectedposition );                             break;                         case 1:                             intent downloadintent = new intent(getapplicationcontext(), downloadactivity.class);                             downloadintent.putextra("songindex", selectedposition);                             log.d(null, + ". position: " + selectedposition );                             break;                         }                      }                 });                 adb.show();             }             });


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