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iphone - How to stop the UITextField from responding to the shake gesture?

By default, if you shake the iPhone while entering text in a UITextField, a little box will appear asking if you want to undo typing. How can I prevent this from happening? I looked through the UITextField, UITextFieldDelegate, and UITextInputTraits docs and found nothing relating to shaking.

Presumably I could subclass UITextField to ignore the shake event, but I'm not exactly confident in my ability to not screw other things up. I'd love something like

textField.respondsToShake = FALSE;

What's the best way to do this?

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[UIApplication sharedApplication].applicationSupportsShakeToEdit = NO;

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