android - showDialog button doesent calls method i told him to -

ok got activity doesent have layout, there take gps coordinates , if succeed default camera intent started, if not show him dialog user have 2 buttons 1 cancel , go starting activity , second 1 try getting picture again (calling method obtaining gps , sending camera intent).

the problem when hit try again button doesent call getpicture() methond continue on button never hit nor dialog shown , problem happens

here code:

protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      getpicture(); }  public void getpicture(){        locationmanager locationmanager = null;      locationmanager = (locationmanager)getsystemservice(context.location_service);     locationlistener = new mylocationlistener();      locationmanager.requestlocationupdates(locationmanager.gps_provider, 0, 0, locationlistener);      if(locationmanager.isproviderenabled(locationmanager.gps_provider)){         if(mylocationlistener.latitude>0){             intent cameraintent = new intent(android.provider.mediastore.action_image_capture);              startactivityforresult(cameraintent, camera_request);           } else {              showdialog(gps_cant_connect);         }     }else{          showdialog(gps_off);     } }  @override  protected dialog oncreatedialog(int id) {         dialog d = null;         switch (id){          case gps_off: {             alertdialog.builder builder = new alertdialog.builder(this);             builder.settitle("please turn on gps before taking picture");             builder.setneutralbutton("try again", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     getpicture();                 }             });             builder.setnegativebutton("cancel", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     intent intent = new intent(startcameraactivity.this, mainactivity.class);                     intent.setflags(intent.flag_activity_clear_top);                     startactivity(intent);                  }             });             d = builder.create();             break;         }         case gps_cant_connect: {             alertdialog.builder builder = new alertdialog.builder(this);             builder.settitle("gps cant coordinates! please make sure outside");             builder.setneutralbutton("try again", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     getpicture();                 }             });             builder.setnegativebutton("cancel", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     intent intent = new intent(startcameraactivity.this, mainactivity.class);                     intent.setflags(intent.flag_activity_clear_top);                     startactivity(intent);                  }             });              d = builder.create();             break;         }            return d; } 

just add:

d.show(); 

after every d = builder.create(); line.

because have create dialog not show thats why not showing.

like:

case gps_cant_connect: {             alertdialog.builder builder = new alertdialog.builder(this);             builder.settitle("gps cant coordinates! please make sure outside");             builder.setneutralbutton("try again", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     getpicture();                 }             });             builder.setnegativebutton("cancel", new onclicklistener() {                  @override                 public void onclick(dialoginterface dialog, int which) {                     intent intent = new intent(startcameraactivity.this, mainactivity.class);                     intent.setflags(intent.flag_activity_clear_top);                     startactivity(intent);                  }             });              d = builder.create();             d.show();             break;         }