[Don't merge] Try to receive life-cycle notifications #1
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The beginning of the story is this.
With this PR, logs below ware printed out to console. (I tried it with iPadOS 11.6 on simulator)
When app launches,
Then show app-switcher,
Switch to another app,
Switch to this app again,
Show Dock and do "Show All Windows" from dock icon,
Select another scene,
Summarize the above:
AppDelegate
, e.g.applicationDidBecomeActive
, was never called.UIApplication
, e.g.UIApplication.didBecomeActiveNotification
was sent!! 馃槻UIScene
, e.g.UIScene.didActivateNotification
was sent.UIApplication.willEnterForegroundNotification
andUIApplication.didEnterBackgroundNotification
were not sent contrary to that corresponding scene event was sent.