Android google map on click of current location button show alert box if gps not enabled -


i have implemented google map in app. when click on current location button wanted show alert box if gps not enabled.

i tried way got view of button.

    supportmapfragment fm = (supportmapfragment) getsupportfragmentmanager()                 .findfragmentbyid(r.id.map);           view plusminusbutton = fm.getview().findviewbyid(1);         view locationbutton = fm.getview().findviewbyid(2);

using locationbutton tried use setonclicklistener did not help.

my requirement simple when click on image enter image description here if gps not enabled have show alert box saying gps not enabled.

this request , google added feature (in august 2013 think). can listen clicks on location button this:

final context context = this; mmap.setonmylocationbuttonclicklistener(new googlemap.onmylocationbuttonclicklistener() {     @override     public boolean onmylocationbuttonclick() {         locationmanager mgr = (locationmanager) getsystemservice(context.location_service);         if (!mgr.isproviderenabled(locationmanager.gps_provider)) {             toast.maketext(context, "gps disabled!", toast.length_short).show();         }         return false;     } });

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