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iphonemodal-dialogshakemotion

Shake to open view modally

I have my 'shake' working fine (using motionEnded), based off of Apple's GLPaint code. When the user shakes the device (running 3.0 and up) I want to open a view controller modally using presentModalViewController.

In my appdelegate I have the notification (as per the GLPaint sample code):

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(shakeToOpenHiddenScreen) name:@"shake" object:nil];

In my shakeToOpenHiddenScreen I just want to open view 'x' modally but I don't think that my appdelegate will respond to presentModalViewController.

Is there a way around this?

Solution

  • It is a method on UIViewController, so you should either have access to a saved view controller from your appDelegate, or else set up the notification to call one (addObserver:someVC).

    "shake" isn't a standard notification name, so there should be some code elsewhere in your app that posts this notification, presumably also copied from the GLPaint sample.