Convert text to hyperlink, assign to UILabel

Question

In the below code I am detecting the url from string. now I need to put hyperlink only to detected "url" and assign to UILabel whenever I click on this url it should go to browser, how to do this?

Code:

NSString *string = descPost.text;
NSDataDetector *linkDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeLink error:nil];
NSArray *matches = [linkDetector matchesInString:string options:0 range:NSMakeRange(0, [string length])];
for (NSTextCheckingResult *match in matches)
{
    if ([match resultType] == NSTextCheckingTypeLink)
    {
        NSURL *url = [match URL];
        NSLog(@"found URL: %@", url);
    }
}

Check this question: http://stackoverflow.com/q/8839464/792677 — A-Live, May 12 '14 at 13:10

score 5 · Accepted Answer · edited May 12 '14 at 13:15

5

What you should do is you should create a UITapGestureRecognizer on a UILabel and when that UILabel is tapped on, you should open the url.

Create the gesture like this:

UITapGestureRecognizer *gr = 
 [[UITapGestureRecognizer alloc] initWithTarget:self 
                                         action:@selector(myAction:)];
[myLabel addGestureRecognizer:gr];
gr.numberOfTapsRequired = 1;

Next write this delegate method when tap is pressed:

- (void) myAction: (UITapGestureRecognizer *) gr {
    // write code to open the url here
    [[UIApplication sharedApplication] openURL:url];
}

edited May 12 '14 at 13:15

Alex Cio

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answered May 12 '14 at 13:13

Khawar Ali

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what should i do when NSString consist a normal string and URL – Anil M H May 12 '14 at 13:15
You need to separate the url first from the string before calling openURL. P.S for converting url to string, use `string = [url absoluteString];` for converting string to url, use `url = [[NSURL alloc] URLWithString:string]` – Khawar Ali May 12 '14 at 13:19

iPatel · Answer 2 · 2014-05-12T13:23:47.747

My suggestion is, put you link on button instead of label because label has not it own click event/action so you need to use tap gesture for apply clickable feature on label where button has it's own forControlEvents so you can easily handle it. remain thing for an underline of link then put background image of button that look like an underline.

For convert URL to NSString

NSString *urlString = [myURL absoluteString];

Otherwise all the information you can get from @Khawar Ali's answer :)

score 0 · Answer 3 · answered May 12 '14 at 13:22

My suggestion is, use a UIButton set clear color in background view, and make a IBAction method to manage the action of open URL.

in .h

-(IBAction)openUrl:(id)sender;

in .m

-(IBAction)openUrl:(id)sender{
[[UIApplication sharedApplication] openURL:url];

}

Like our friend said.

score 0 · Answer 4 · answered May 12 '14 at 13:27

Try this one :

 UILabel *yourLabel = [[UILabel alloc] initWithFrame:CGRectMake(60, 100, 200, 40)]; // according your requirement
 yourLabel.userInteractionEnabled = YES;
 UITapGestureRecognizer *linked = [[UITapGestureRecognizer alloc] initWithTarget:self  action:@selector(LinkedToURL:)];
 [yourLabel addGestureRecognizer:linked];
 linked.numberOfTapsRequired = 1;
 linked.cancelsTouchesInView = NO;
 [self.view addSubview:yourLabel];

 - (void) LinkedToURL: (UITapGestureRecognizer *) linked
 {
    // write your code here for linked with your urls
 }

Convert text to hyperlink, assign to UILabel

4 Answers4