android - Launch activity with intent -

i've listapp activity list installed application, i'm trying here when user selects app list should intent/info selected app , when user click button1, should open app(with of intent retrieved earlier) selected earlier.

listapp activity:

 @override public void onclick(view arg0) {     // todo auto-generated method stub      switch (arg0.getid()){      case r.id.button1:          //startactivity(app.intent);         //should start app of info received selecting app  list         break;     }       @override public void onitemclick(adapterview<?> parent, view v, int position, long id) {  //applicationinfo app = (applicationinfo) parent.getitematposition(position);     //startactivity(app.intent);          //instead of launching app, info selected app & use it(start app) when clicking button1 } 

applicationinfo

class applicationinfo {  charsequence title; intent intent; drawable icon; boolean filtered;    final void setactivity(componentname classname, int launchflags) {     intent = new intent(intent.action_main);     intent.addcategory(intent.category_launcher);     intent.setcomponent(classname);     intent.setflags(launchflags);     } } 

thanks :)

get activity info index in list if know package name of app.

list<resolveinfo> rinfo =  getpackagemanager().queryintentactivities(new intent(intent.action_main),match_default_only);  for(resolveinfo resolveinfo:rinfo){     if(resolveinfo.activityinfo.packagename.equals("package")){ 

set component resolve info.

        componentname chosenname = new componentname(         resolveinfo.activityinfo.packagename,         resolveinfo.activityinfo.name);         break;      }  }  final intent intent = new intent(intent.action_main, null); intent.addcategory(intent.category_launcher); intent.setcomponent(chosenname); startactivity(intent); 

set component above.

public componentname (string pkg, string cls)

added in api level 1 create new component identifier.

parameters pkg name of package component exists in. can not null. cls name of class inside of pkg implements component. can not null.