Detect iOS Swift Shake Gesture

Question

I am developing an application with a rigid system, basically, if I return the iPhone to leave my application, I will make a function, if I return the iPhone to the right, another function, with different gestures.

I have no idea how to work with this, I try to search in google, but it doesn’t work, the result is only a touch gesture, not a motion gesture.

Does anyone have a tutorial to help me?

Answer 1

Swift3 ios10:

override func viewDidLoad() { super.viewDidLoad() self.becomeFirstResponder() // To get shake gesture } // We are willing to become first responder to get shake motion override var canBecomeFirstResponder: Bool { get { return true } } // Enable detection of shake motion override func motionEnded(_ motion: UIEventSubtype, with event: UIEvent?) { if motion == .motionShake { print("Why are you shaking me?") } } 

Answer 2

Super easy to implement:

1) Let iOS know which view controller is the first in the responder chain:

 override func viewDidLoad() { super.viewDidLoad() self.becomeFirstResponder() } override func canBecomeFirstResponder() -> Bool { return true } 

2) Handle the event in a certain way:

 override func motionEnded(motion: UIEventSubtype, withEvent event: UIEvent?) { if(event.subtype == UIEventSubtype.MotionShake) { print("You shook me, now what") } } 

Answer 3

This has been updated for iOS 12 - see Apple Docs. You no longer need to add the comeFirstResponder () method.

You just need to add the motionEnded function to your code.

 override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { // code here } 

Answer 4

Swift 5

Just add the following methods to the ViewController and execute the code

 override func becomeFirstResponder() -> Bool { return true } override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?){ if motion == .motionShake { print("Shake Gesture Detected") //show some alert here } } 

Answer 5

Speedy99 quick response in Objective-C version

 - (void)viewDidLoad { [super viewDidLoad]; [self becomeFirstResponder]; } - (BOOL)canBecomeFirstResponder{ return true; } - (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{ if(event.subtype == UIEventSubtypeMotionShake){ NSLog(@"Why are you shaking me?"); } } 

Answer 6

Swift 5

 class MyViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() self.becomeFirstResponder() } override var canBecomeFirstResponder: Bool { get { return true } } override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { if motion == .motionShake { print("shake") } } } 

Answer 7

Swift docs: - https://developer.apple.com/documentation/uikit/uiresponder .

To detect motion events, Swift has 3 methods:

1. func motionBegan () → Informs the recipient that the movement has started

2. func motionEnded () → Notifies the recipient that the motion event has ended

3. func motionCancelled () → Notifies the recipient that the motion event has been canceled

For example, if you want to refresh the image after shaking with a gesture

 class ViewController: UIViewController { override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) { updateImage() } UpdateImage(){ // Implementation } }