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Diffstat (limited to 'Xamarin.Forms.Platform.iOS/FormsApplicationDelegate.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.iOS/FormsApplicationDelegate.cs | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.iOS/FormsApplicationDelegate.cs b/Xamarin.Forms.Platform.iOS/FormsApplicationDelegate.cs new file mode 100644 index 00000000..a4342473 --- /dev/null +++ b/Xamarin.Forms.Platform.iOS/FormsApplicationDelegate.cs @@ -0,0 +1,151 @@ +using System; +using System.ComponentModel; +using System.Linq; +using System.Text; +#if __UNIFIED__ +using Foundation; +using UIKit; + +#else +using MonoTouch.Foundation; +using MonoTouch.UIKit; +#endif + +namespace Xamarin.Forms.Platform.iOS +{ + public class FormsApplicationDelegate : UIApplicationDelegate + { + Application _application; + bool _isSuspended; + UIWindow _window; + + protected FormsApplicationDelegate() + { + } + + public override bool ContinueUserActivity(UIApplication application, NSUserActivity userActivity, UIApplicationRestorationHandler completionHandler) + { + return true; + } + + // now in background + public override void DidEnterBackground(UIApplication uiApplication) + { + // applicationDidEnterBackground + } + + // finish initialization before display to user + public override bool FinishedLaunching(UIApplication uiApplication, NSDictionary launchOptions) + { + // check contents of launch options and evaluate why the app was launched and respond + // initialize the important data structures + // prepare you apps window and views for display + // keep lightweight, anything long winded should be executed asynchronously on a secondary thread. + // application:didFinishLaunchingWithOptions + _window = new UIWindow(UIScreen.MainScreen.Bounds); + + if (_application == null) + throw new InvalidOperationException("You MUST invoke LoadApplication () before calling base.FinishedLaunching ()"); + + SetMainPage(); + _application.SendStart(); + return true; + } + + // about to become foreground, last minute preparatuin + public override void OnActivated(UIApplication uiApplication) + { + // applicationDidBecomeActive + // execute any OpenGL ES drawing calls + if (_application != null && _isSuspended) + { + _isSuspended = false; + _application.SendResume(); + } + } + + // transitioning to background + public override async void OnResignActivation(UIApplication uiApplication) + { + // applicationWillResignActive + if (_application != null) + { + _isSuspended = true; + await _application.SendSleepAsync(); + } + } + + public override void UserActivityUpdated(UIApplication application, NSUserActivity userActivity) + { + } + + // from background to foreground, not yet active + public override void WillEnterForeground(UIApplication uiApplication) + { + // applicationWillEnterForeground + } + + // TODO where to execute heavy code, storing state, sending to server, etc + + // first chance to execute code at launch time + public override bool WillFinishLaunching(UIApplication uiApplication, NSDictionary launchOptions) + { + // check contents of launch options and evaluate why the app was launched and respond + // initialize the important data structures + // prepare you apps window and views for display + // keep lightweight, anything long winded should be executed asynchronously on a secondary thread. + // application:willFinishLaunchingWithOptions + // Restore ui state here + return true; + } + + // app is being terminated, not called if you app is suspended + public override void WillTerminate(UIApplication uiApplication) + { + // applicationWillTerminate + //application.SendTerminate (); + } + + protected override void Dispose(bool disposing) + { + if (disposing && _application != null) + _application.PropertyChanged -= ApplicationOnPropertyChanged; + + base.Dispose(disposing); + } + + protected void LoadApplication(Application application) + { + if (application == null) + throw new ArgumentNullException("application"); + + Application.Current = application; + _application = application; + + application.PropertyChanged += ApplicationOnPropertyChanged; + } + + void ApplicationOnPropertyChanged(object sender, PropertyChangedEventArgs args) + { + if (args.PropertyName == "MainPage") + UpdateMainPage(); + } + + void SetMainPage() + { + UpdateMainPage(); + _window.MakeKeyAndVisible(); + } + + void UpdateMainPage() + { + if (_application.MainPage == null) + return; + + var platformRenderer = (PlatformRenderer)_window.RootViewController; + _window.RootViewController = _application.MainPage.CreateViewController(); + if (platformRenderer != null) + ((IDisposable)platformRenderer.Platform).Dispose(); + } + } +}
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