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Philippe Boivin
Philippe Boivin

Reputation: 125

Not sure how to properly subclass UIApplication while using storyboards

I want to return to my storyboard's initial viewcontroller after X time of user inactivity (no touch events fired). After some research I see that the most common way of detecting inactivity is to fire an NSTimer and reset the interval when an event is fired. To detect a fired event, we override [UIApplication sentEvent:] in a subclass of UIApplication. This is the part where I'm kind of stuck.

I'm looking at this project as reference

http://www.icodeblog.com/2011/09/19/timing-out-an-application-due-to-inactivity/

https://github.com/elc/ELCUIApplication

I'm not sure how to implement a similar functionality when working with storyboards. I tried something similar to that github projet; I created a new class that was a subclass of UIApplication, overrode the needed method and finally changed the targeted class in the main function (from my appdelegate to the new class that subclassed UIApplication). By doing so I got the following error

The app delegate must implement the window property if it wants to use a main storyboard file.

The appDelegate in the github is a subclass of NSObject and manually loads up the initial view in his window property from what I understand, while my appDelegate is a subclass of UIResponder which itself is a superclass of UIApplication. I'm not sure how to proceed, I already have the window property in my AppDelegate and synthesized, but I'm not sure what to do with it.

Any help would be greatly appreciated!

Upvotes: 3

Views: 1687

Answers (1)

rob mayoff
rob mayoff

Reputation: 385650

It sounds like you changed the wrong argument to UIApplicationMain.

The default call to UIApplicationMain looks like this:

return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));

The third argument (nil by default) is the name of the UIApplication class to use. If it's nil, the app just uses UIApplication.

The fourth argument is the name of the UIApplicationDelegate class to use.

It sounds like you changed the fourth argument, but you should have changed the third argument:

return UIApplicationMain(argc, argv,
    NSStringFromClass([MyApplication class]),
    NSStringFromClass([AppDelegate class]));

Upvotes: 12

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