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Keep references to observers to prevent garbage collection.

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This commit is contained in:
Rossen Hristov
2015-09-01 15:40:36 +03:00
parent 7a2e41b1b3
commit 41ca3af60c
1 changed files with 8 additions and 1 deletions
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7
application/application.ios.ts
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@ -64,8 +64,10 @@ class IOSApplication implements definition.iOSApplication {
private _delegate: typeof UIApplicationDelegate; private _delegate: typeof UIApplicationDelegate;
private _currentOrientation = UIDevice.currentDevice().orientation; private _currentOrientation = UIDevice.currentDevice().orientation;
private _window: Window; private _window: Window;
private _observers: Array<NotificationObserver>;
constructor() { constructor() {
this._observers = new Array<NotificationObserver>();
this.addNotificationObserver(UIApplicationDidFinishLaunchingNotification, this.didFinishLaunchingWithOptions.bind(this)); this.addNotificationObserver(UIApplicationDidFinishLaunchingNotification, this.didFinishLaunchingWithOptions.bind(this));
this.addNotificationObserver(UIApplicationDidBecomeActiveNotification, this.didBecomeActive.bind(this)); this.addNotificationObserver(UIApplicationDidBecomeActiveNotification, this.didBecomeActive.bind(this));
this.addNotificationObserver(UIApplicationDidEnterBackgroundNotification, this.didEnterBackground.bind(this)); this.addNotificationObserver(UIApplicationDidEnterBackgroundNotification, this.didEnterBackground.bind(this));
@ -90,12 +92,17 @@ class IOSApplication implements definition.iOSApplication {
public addNotificationObserver(notificationName: string, onReceiveCallback: (notification: NSNotification) => void): NotificationObserver { public addNotificationObserver(notificationName: string, onReceiveCallback: (notification: NSNotification) => void): NotificationObserver {
var observer = NotificationObserver.new().initWithCallback(onReceiveCallback); var observer = NotificationObserver.new().initWithCallback(onReceiveCallback);
NSNotificationCenter.defaultCenter().addObserverSelectorNameObject(observer, "onReceive", notificationName, null); NSNotificationCenter.defaultCenter().addObserverSelectorNameObject(observer, "onReceive", notificationName, null);
this._observers.push(observer);
return observer; return observer;
} }
public removeNotificationObserver(observer: any, notificationName: string) { public removeNotificationObserver(observer: any, notificationName: string) {
var index = this._observers.indexOf(observer);
if (index >= 0) {
this._observers.splice(index, 1);
NSNotificationCenter.defaultCenter().removeObserverNameObject(observer, notificationName, null); NSNotificationCenter.defaultCenter().removeObserverNameObject(observer, notificationName, null);
} }
}
private didFinishLaunchingWithOptions(notification: NSNotification) { private didFinishLaunchingWithOptions(notification: NSNotification) {
this._window = <Window>Window.alloc().initWithFrame(UIScreen.mainScreen().bounds); this._window = <Window>Window.alloc().initWithFrame(UIScreen.mainScreen().bounds);