Disable Magnifying Glass in UITextview

Question

In UITextview when touch is pressed for the longer time magnifying glass shows up. How can i disable it.

Check out this [thread](http://stackoverflow.com/questions/866200/disable-magnifying-glass-in-uitextfield) — Alexander, May 17 '12 at 17:53
Answer is [HERE](https://stackoverflow.com/a/48077605/4061501). **No subclass needed.** — Lal Krishna, Jan 03 '18 at 12:41

score 34 · Accepted Answer · edited Dec 21 '13 at 21:25

34

Finally this issue is also resolved

Here is the code for reference in case anyone needs

in the m file of subclassed UITextview added code

-(void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer 
{
    //Prevent zooming but not panning
    if ([gestureRecognizer isKindOfClass:[UILongPressGestureRecognizer class]]) 
    {
        gestureRecognizer.enabled = NO;
    }
    [super addGestureRecognizer:gestureRecognizer];
    return;
}

It works.

edited Dec 21 '13 at 21:25

Léo Natan

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answered May 17 '12 at 18:11

user1120133

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2

But if I am not mistaken this disables long press totally. In other words, if your text view contains a URL link or a phone number (in case you enabled detections) then on long press your text view won't be able to respond to them, am I right? – antf May 17 '12 at 19:16
Looking to also disable the caret and text editing? See this answer->[link](http://stackoverflow.com/questions/18139234/prevent-editing-of-text-in-uitextfield-and-hide-cursor-caret-magnifying-glass-wh/18139235#18139235) – Josh Bernfeld Aug 09 '13 at 02:40
1

Yes, like @antf said, this code totally disable touches on links, phones and events. – sig May 14 '15 at 10:41
having same issue in ios9, i need to diasble only maginging glass, but not url and phone touch events. – Madhu Oct 07 '15 at 09:32
@Madhu check the answer I just posted. It might give you some insights. – Otávio Oct 25 '16 at 14:49

score 1 · Answer 2 · answered Jun 03 '16 at 09:27

This works for me

@implementation CustomTextView 

- (NSArray *)selectionRectsForRange:(UITextRange *)range
{
    self.selectedTextRange = nil;
    return nil;
}

- (void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer
{
    gestureRecognizer.delegate = self;

    [super addGestureRecognizer:gestureRecognizer];
    return;
}

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    return NO;
}

- (CGRect)caretRectForPosition:(UITextPosition *)position
{
    return [super caretRectForPosition:self.endOfDocument];
}


- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if (([gestureRecognizer isKindOfClass:[UILongPressGestureRecognizer class]] && !gestureRecognizer.delaysTouchesEnded))
    {
        return NO;
    }
    else
        return YES;

}

score 1 · Answer 3 · answered Jan 09 '19 at 10:42

Swift 4 version of @user1120133's answer:

    override func addGestureRecognizer(_ gestureRecognizer: UIGestureRecognizer) {
      //Prevent long press to show the magnifying glass
      if gestureRecognizer is UILongPressGestureRecognizer {
        gestureRecognizer.isEnabled = false
      }

      super.addGestureRecognizer(gestureRecognizer)
    }

score 1 · Answer 4 · answered Apr 30 '19 at 11:51

Xamarin.iOS:

Create custom UITextView
Override GestureRecognizerShouldBegin method on your UITextView

public override bool GestureRecognizerShouldBegin(UIGestureRecognizer gestureRecognizer)
{
    if (gestureRecognizer is UILongPressGestureRecognizer ||
        gestureRecognizer.Name != "UITextInteractionNameLinkTap")
    {
        return false;
    }
    return true;
}

score -1 · Answer 5 · answered Oct 25 '16 at 14:39

@Irina's answer works partially (Try a tap followed by a long press and you will have a magnifying overlay) for iOS 9.x and crashes on iOS 10 with the following:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'You cannot change the delegate of the UIViewControllerPreviewing failure relationship gesture recognizer'

The following code works both for iOS 9.x and 10.x in every combination of tap and/or long gestures I could think of.

Note I don't guarantee that it will be accepted by Apple's review.

@implementation CustomTextView

- (void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer
{
    NSArray *allowedGestures = @[ @"UILongPressGestureRecognizer", @"UIScrollViewDelayedTouchesBeganGestureRecognizer", @"UIScrollViewPanGestureRecognizer" ];

    if (![allowedGestures containsObject:NSStringFromClass([gestureRecognizer class])])
    {
        return;
    }

    if (([gestureRecognizer isKindOfClass:[UILongPressGestureRecognizer class]] && !gestureRecognizer.delaysTouchesEnded))
    {
        return;
    }

    [super addGestureRecognizer:gestureRecognizer];
}

@end

We need UIScrollViewDelayedTouchesBeganGestureRecognizer and UIScrollViewPanGestureRecognizer in order to keep the UITextView ability to scroll. Both classes are part of private API so use that at your own risk.

Disable Magnifying Glass in UITextview

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