ios How to make UITextView detect one tap?

Question

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    NSLog(@"touchesBegan");

    //test
    UITouch *touch = [event allTouches] anyObject];
    if ([touch tapCount] == 2) {
        NSLog (@"tapcount 2");
        [self.textview becomeFirstResponder];

    }   

     else if ([touch tapCount] == 1) {
         NSLog (@"tapcount 1");
         [self.textview becomeFirstResponder];
         [self.view performSelector:@selector(select:)];


     }

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
    [super touchesBegan:touches withEvent:event];
    NSLog(@"touchesMoved");
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
    NSLog(@"****touchesEnded");
    [self.nextResponder touchesEnded: touches withEvent:event]; 
    NSLog(@"****touchesEnded");
    [super touchesEnded:touches withEvent:event];
    NSLog(@"****touchesEnded");
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{
    [super touchesCancelled:touches withEvent:event]; 
    NSLog(@"touchesCancelled");
}

MY QUESTION:

I want to simulate two taps when tapping once on a UITextView, which is textview in this code. But I do not get NSLog from one and two taps when I tap either once or twice on textview, only outside it. What should I do to make it work?

Answer 1

Probably I would use two gesture recognizers here.

//...some stuff above here probably in you're controllers viewDidLoad

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapRecognized:)];
singleTap.numberOfTapsRequired = 1;
[someTextView addGestureRecognizer:singleTap];
[singleTap release];

UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapRecognized:)];
doubleTap.numberOfTapsRequired = 2;
[someTextView addGestureRecognizer:doubleTap];
[doubleTap release];

And the selectors would just be like:

- (void)singleTapRecognized:(UIGestureRecognizer *)gestureRecognizer {
    NSLog(@"single tap");
    // ...etc
}

- (void)doubleTapRecognized:(UIGestureRecognizer *)gestureRecognizer {
    NSLog(@"double tap");
    // ...etc
}

Answer 2

I encountered a similar issue where I wanted to capture a tap on a textView without editing the underlying text.

This answer is for Swift 3.0.

For my solution, I implemented the textView delegate method textViewShouldBeginEditing and returned false for the value. This allows me to capture taps on the textView without any additional overhead.

extension ViewController: UITextViewDelegate {
    func textViewShouldBeginEditing(_ textView: UITextView) -> Bool {
        // Do something

        return false
    }
}

Just be sure to assign the textView to use the delegate in your ViewController class.

Answer 3

I had the same problem and the other answers did not work for me. So this is what I did.

I attached the gesture like another answer suggested. Then I made sure the delegate method for selection was called. I did try simply selecting the cell but that did not fire the delegate method. I believe that only user interactions cause the delegate method to be called, so this code mimics that behavior.

https://gist.github.com/brennanMKE/e89bf7a28d96812d6a22

@implementation TappableTextView

- (instancetype)init {
    self = [super init];
    if (self) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithCoder:(NSCoder *)coder {
    self = [super initWithCoder:coder];
    if (self) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        [self setup];
    }
    return self;
}

- (void)setup {
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapRecognized:)];
    singleTap.numberOfTapsRequired = 1;
    [self addGestureRecognizer:singleTap];
}

- (void)singleTapRecognized:(id)sender {
    UIView *superview = self.superview;

    UICollectionViewCell *cell = nil;
    NSIndexPath *indexPath = nil;

    while (superview) {
        if ([superview isKindOfClass:[UICollectionViewCell class]]) {
            cell = (UICollectionViewCell *)superview;
        }

        if ([superview isKindOfClass:[UICollectionView class]] && cell) {
            UICollectionView *collectionView = (UICollectionView *)superview;
            indexPath = [collectionView indexPathForCell:cell];
            NSAssert(collectionView.delegate, @"Delegate must be defined");
            NSAssert([collectionView.delegate respondsToSelector:@selector(collectionView:didSelectItemAtIndexPath:)], @"Selection must be supported");
            if (indexPath && [collectionView.delegate respondsToSelector:@selector(collectionView:didSelectItemAtIndexPath:)]) {
                [collectionView.delegate collectionView:collectionView didSelectItemAtIndexPath:indexPath];
            }

            return;
        }

        superview = superview.superview;
    }
}

@end