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Asked: 2026-06-18T01:09:58+00:00

I want to add gestures to my iPhone. I want a functionality like a

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I want to add gestures to my iPhone. I want a functionality like a user can add a gesture like draw an alphabet say for example ‘f’ and bind an application like facebook to it. Then, the next time user draws f facebook is opened automatically.

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  1. Editorial Team

    You’re looking for custom gesture recognizers base on a predefined path.

    That’s what Chris Miles did with CMUnistrokeGestureRecognizer.

    1. you define a custom UIBezierPath
    2. associate it to the CMUnistrokeGestureRecognizer
    3. it uses the different gesture recognizer’s delegate methods

    It’s described on Chris’ blog and available on Github.

    To detect multistroke gestures, you could chain multiple unistroke gesture recognizers, requiring all of them to succeed in a given order and with a maximum amount of time between each stroke.

    Opening the Facebook app when the complete gesture is detected is as simple as calling

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"fb://"]]
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