Tap Gesture on part of UILabel

Question

I could successfully add tap gestures to a part of UITextView with the following code:

UITextPosition *pos = textView.endOfDocument;// textView ~ UITextView

for (int i=0;i<words*2-1;i++){// *2 since UITextGranularityWord considers a whitespace to be a word

    UITextPosition *pos2 = [textView.tokenizer positionFromPosition:pos toBoundary:UITextGranularityWord inDirection:UITextLayoutDirectionLeft];
    UITextRange *range = [textView textRangeFromPosition:pos toPosition:pos2];
    CGRect resultFrame = [textView firstRectForRange:(UITextRange *)range ];

    UIView* tapViewOnText = [[UIView alloc] initWithFrame:resultFrame];
    [tapViewOnText addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(targetRoutine)]];
    tapViewOnText.tag = 125;
    [textView addSubview:tapViewOnText];

    pos=pos2;
}

I wish to imitate the same behaviour in a UILabel. The issue is, UITextInputTokenizer (used to tokenize the individual words) is declared in UITextInput.h, and only UITextView & UITextFieldconform to UITextInput.h; UILabel does not. Is there a workaround for this ??

Answer 1

Try this. Let your label be label :

  //add gesture recognizer to label
  UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] init];
  [label addGestureRecognizer:singleTap];
  //setting a text initially to the label
  [label setText:@"hello world i love iphone"];

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

UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];

CGRect rect = label.frame;
CGRect newRect = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width/2, rect.size.height);

if (CGRectContainsPoint(newRect, touchPoint)) {
    NSLog(@"Hello world");
}
}

Clicking on the first half of label will work (It gives log output). Not the other half.