ios - Perform action by clicking on some word in Uitextview or UILabel

Question

How can I do to perform some specific action (like showing a modal or pushing a controller) when user click on some formated/specific word in Uitextview (or UIlabel) ? I've heard about NSAttributedString but I'm not sure how to make this with it.

What I want to have is the same results as the facebook app. When you click on a name it push another controller :

If you can give me some hint, tutorial or whatever you want please.

Answer 1

Add gesture recognizer to your UITextView:

//bind gesture
[_yourTextView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:delegate action:@selector(didReceiveGestureOnText:)]];

And then just check which word is clicked in didReceiveGestureOnText with following code:

+(NSString*)getPressedWordWithRecognizer:(UIGestureRecognizer*)recognizer
{
    //get view
    UITextView *textView = (UITextView *)recognizer.view;
    //get location
    CGPoint location = [recognizer locationInView:textView];
    UITextPosition *tapPosition = [textView closestPositionToPoint:location];
    UITextRange *textRange = [textView.tokenizer rangeEnclosingPosition:tapPosition withGranularity:UITextGranularityWord inDirection:UITextLayoutDirectionRight];

    //return string
    return [textView textInRange:textRange];
}

EDIT

This is how your didReceiveGestureOnText method should look-like:

-(void)didReceiveGestureOnText:(UITapGestureRecognizer*)recognizer
{
    //check if this is actual user
    NSString* pressedWord = [delegate getPressedWordWithRecognizer:recognizer];
}

However this will led you in checking strings after all which is in really cool(as it's slow).