topic Re: AGSLayerDelegate is not being called in ArcGIS Runtime SDK for iOS Questions

AGSLayerDelegate is not being called

KyunamKim — Mon, 11 Mar 2013 23:58:23 GMT

Let's say I have my own delegate class

@interface MyLayerDelegate : NSObject <AGSLayerDelegate>
@end
along with its implementation file.

In my ViewController, I set a delegate like this.

AGSDynamicMapServiceLayer *aLayer = ...;
aLayer.delegate = [[MyLayerDelegate alloc] init];

Why isn't this delegate instance not being called?

When I make ViewController to adopt AGSLayerDelegate and do
aLayer.delegate = self;
Then, this works.

Yes, I'm new to Objective-C, iOS land.

Thanks,
Kyunam

Re: AGSLayerDelegate is not being called

FrankXia — Tue, 12 Mar 2013 15:04:02 GMT

You need to hold the reference to your MyLayerDelegate variable so it wouldn't be released by the system. In your controller class's .h file, add the following line,

@property (nonatomic, strong) MyLayerDelegate *myLayerDelegate;

And then create an object for this class in your controller's .m file, and assign to the variable you declared in the .h file such as

myLayerDelegate = [[MyLayerDelegate alloc] init];
yourDynamicLayer.delegate = myLayerDelegate;

That's all.

Frank