Detecting Touch and hold on screen IPhone (Xcode)

Question

Im trying to find out how to detect a touch&hold on screen method in the game im making. Im using touches began for single taps (Making the character move up) When they touch and keep holding i want the character to move straight forward.

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

 //code to make him move up

    }

Any ideas on how to detect a touch&hold ?

I think you need to use UILongPressGestureRecognizer for touch and hold on screen — Vandit Mehta, Jun 19 '17 at 11:24
Please check my answer below, for more detailes https://stackoverflow.com/questions/6179347/uibutton-long-press-event or https://stackoverflow.com/questions/34548263/swift-button-tap-and-long-press-gesture — Vandit Mehta, Jun 19 '17 at 11:38

score 2 · Answer 1 · answered Jun 19 '17 at 11:37

Objective-c

// Add guesture recognizer
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(buttonDidLongPress:)];
    [self.button addGestureRecognizer:longPress];

// Call back event
- (void)buttonDidLongPress:(UILongPressGestureRecognizer*)gesture
{
    switch (gesture.state) {
        case UIGestureRecognizerStateBegan:
        {
            // Code
        }
            break;
        case UIGestureRecognizerStateEnded:
        {
            //Code
        }
            break;
        default:
            break;
    }
}

Swift

// Add guesture recognizer
        let longPress = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))
        self.button.addGestureRecognizer(longPress)

// Call back event
func longPress(guesture: UILongPressGestureRecognizer) {

        switch guesture.state {
        case UIGestureRecognizerState.began:
            //Code
            break

        case UIGestureRecognizerState.ended:
            //Code
            break

        default:
            break
        }
    }

Don't forgot to extend you class with UIGestureRecognizerDelegate

Lal Krishna · Answer 2 · 2017-06-19T12:01:54.380

0

Try:

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
[self.view addGestureRecognizer:longPress];

-(void) handleLongPress: (UIGestureRecognizer *)longPress {
switch (longPress.state) {
    case UIGestureRecognizerStateBegan:
        // Called when long press for minimum time duration
        break;
    case UIGestureRecognizerStateChanged:
        // Long pressed and dragged 
        break;
    case UIGestureRecognizerStateRecognized:
        // Successfully recognised Long touch
        break;

    default:
        break;
}
if (longPress.state==UIGestureRecognizerStateEnded) {
    NSLog(@"LONG PRESSED");
}

}

edited Jun 19 '17 at 12:01

answered Jun 19 '17 at 11:26

Lal Krishna

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I tried with no luck, where should i place : UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)]; [self.view addGestureRecognizer:longPress]; – Unboxing Tutorials Jun 19 '17 at 11:31
i put it in touchesbegan but it didnt work.. – Unboxing Tutorials Jun 19 '17 at 11:33
UILongPressGestureRecognizer will be alternative to touchesbegan, u should use one or the other – teixeiras Jun 19 '17 at 11:34
Do your things in `UIGestureRecognizerStateEnd`. Code updated – Lal Krishna Jun 19 '17 at 11:52

Detecting Touch and hold on screen IPhone (Xcode)

2 Answers2