topic drawStatusChangedHandler in ArcGIS Runtime SDK for iOS Questions

drawStatusChangedHandler

BrianFlood1 — Tue, 22 Nov 2016 15:10:18 GMT

has the drawStatusChangedHandler block been removed at 100? thanks

RyanOlson1 — Tue, 22 Nov 2016 19:05:25 GMT

It has been removed in favor of KVO on the `drawStatus` property:

```

import UIKit

import ArcGIS

private var myKVOContext = 0

class ViewController: UIViewController {

let mapView = AGSMapView(frame: CGRect.zero)

override func viewDidLoad() {

super.viewDidLoad()

mapView.frame = view.bounds

mapView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

view.addSubview(mapView)

mapView.map = AGSMap(basemapType: .streets, latitude: 0, longitude: 0, levelOfDetail: 0)

mapView.addObserver(self, forKeyPath: "drawStatus", options: .new, context: &myKVOContext)

}

override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {

if context == &myKVOContext{

if keyPath == "drawStatus"{

print("drawStatus changed: \(mapView.drawStatus.rawValue)")

}

else{

super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)

}

```

BrianFlood1 — Wed, 23 Nov 2016 13:08:31 GMT

thank you, works as expected

JamesRichards1 — Wed, 23 Nov 2016 17:46:01 GMT

Brian,

If your going to be using KVO much, check out Facebook's KVOController library:

It's block based API makes wiring up KVO events much cleaner in code.

Cheers,

James

BrianFlood1 — Mon, 28 Nov 2016 13:22:38 GMT

thanks james, I'll take a look