ios - Cannot push a new view when clicking on annotation view -


in iphone app, have controller view , mkmapview.
display several annotation on map, when click on annotation view "calloutaccessorycontroltapped" triggered i'm not able push new view.
self.navigationview null... best way ? need create navigation controller on top of mkmapview ?

-(void)mapview:(mkmapview *)mapview annotationview:(mkannotationview *)view calloutaccessorycontroltapped:(uicontrol *)control {   nslog(@"annotation clicked"); // => ok   if ([control iskindofclass:[uibutton class]]) {     nslog(@"annotation clicked 2"); // => ok      // annotation stuff needs passed new view     myannotation *annotation = (myannotation*)view.annotation;              controlviewcontroller *controlviewcontroller = [[controlviewcontroller alloc] initwithnibname:@"controlviewcontroller" bundle:nil];     controlviewcontroller.thing = annotation.thing;      nslog(@"self.navigationcontroller:%@", self.navigationcontroller);  // => null      // [self.navigationcontroller pushviewcontroller:controlviewcontroller animated:yes];     [controlviewcontroller release];   } }

yep, view controller needs inside uinavigationcontroller. check docs learn how it.


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