MKCoordinateRegion region = MKCoordinateRegionMake(_currentLocationCoordinate, MKCoordinateSpanMake(zoomLevel, zoomLevel));
   [_mapView setRegion:[_mapView regionThatFits:region] animated:YES];

if ( (region.center.latitude >= -90) && (region.center.latitude <= 90) && (region.center.longitude >= -180) && (region.center.longitude <= 180) ){
        [_mapView setRegion:[_mapView regionThatFits:region] animated:YES];
    }
    else{
        NSLog(@"invilid region");
    }

版权声明：本文为博主原创文章，未经博主允许不得转载。