multithreading - Stopping thread that doesnt throw Exception Android -

so im getting location fix phone , problem comes if never finds location or takes wayy long. below sample code loading screen

how set timer stop thread(load screen) once amount of time has passed?

lm.requestlocationupdates(locationmanager.network_provider, 

1000, 10f, this);

handler handler = new handler(); runnable showwaitdialog = new runnable() { int wait = 0; @override public void run() { while (loc == null) {

} // after receiving first gps fix dismiss progress dialog dialog.dismiss(); 

} };

// create dialog let user know we're waiting gps fix dialog = progressdialog.show(weather.this, "please wait...", "retrieving gps data ...", true);

thread t = new thread(showwaitdialog); t.start();

if want stop thread instead of using normal thread background jobs use android sdk's asynctask, there can find cancel().