Catching map scale changes

Question

I have looked at the delegates available on AGSMapView but not seeing anything pop out at me that would help. I see on touch the single tap but that is never called when you do the normal double tap to zoom let alone pinches. Am I missing something?
Thanks

NimeshJarecha · Answer

You should listen to the AGSMapView's notifications for this.

Here the doc from above link...The map component also broadcasts four notifications - MapViewDidLoad, MapTimeExtentChanged, MapDidEndPanning and MapDidEndZooming. Observers interested in these notifications can register for them using the default NSNotificationCenter.

Here is the code...//add this code line in your viewDidLoad or mapViewDidLoad
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(respondToZoom:)  name:@MapDidEndZooming object:nil];

//add this to your .m file
- (void)respondToZoom:(NSNotification*)notification { 
 NSLog(@map scale: %.6f,self.mapView.mapScale);
}

Hope this helps!

Regards,
Nimesh