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How to detect shake gesture using Swift?
To detect a shake gesture in iOS UIKit provides three different methods, let’s see them one by one.
Method 1 − When the shake gesture begins.
override func motionBegan(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // code you want to implement }
Method 2 − When the shake gesture ends.
override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // Code you want to implement. }
Method 3 − when the shake gesture is cancelled.
override func motionCancelled(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // code you want to implement. }
Now let’s add some code in our motionBegan method,
override func motionBegan(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { print(motion) if motion == .motionShake { print("shake was detected") } }
Also add “self.becomeFirstResponder()” in your viewDidLoad() method. When we run the above code on simulator, and use debug to produce a shake gesture, below is the result that’s produced. We can modify the code above according to our use and perform different operations In our app.
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