UITextView with clickable links to actions

UITextView with clickable links to actions

Want to make this:

Set IBoutlet of UITextview :

@property(weak, nonatomic) IBOutlet UITextView *agreeTextContainerView ;

- (void)viewDidLoad {

    [super viewDidLoad];

    

    

    

    [self buildAgreeTextViewFromString:NSLocalizedString(@"I agree to the #<ts>terms of service# and #<pp>privacy policy#",

                                                         @"PLEASE NOTE: please translate \"terms of service\" and \"privacy policy\" as well, and leave the #<ts># and #<pp># around your translations just as in the English version of this message.")];

}

- (void)buildAgreeTextViewFromString:(NSString *)localizedString

{

    // 1. Split the localized string on the # sign:

    NSArray *localizedStringPieces = [localizedString componentsSeparatedByString:@"#"];

    

    // 2. Loop through all the pieces:

    NSUInteger msgChunkCount = localizedStringPieces ? localizedStringPieces.count : 0;

    CGPoint wordLocation = CGPointMake(0.0, 0.0);

    for (NSUInteger i = 0; i < msgChunkCount; i++)

    {

        NSString *chunk = [localizedStringPieces objectAtIndex:i];

        if ([chunk isEqualToString:@""])

        {

            continue;     // skip this loop if the chunk is empty

        }

        

        // 3. Determine what type of word this is:

        BOOL isTermsOfServiceLink = [chunk hasPrefix:@"<ts>"];

        BOOL isPrivacyPolicyLink  = [chunk hasPrefix:@"<pp>"];

        BOOL isLink = (BOOL)(isTermsOfServiceLink || isPrivacyPolicyLink);

        

        // 4. Create label, styling dependent on whether it's a link:

        UILabel *label = [[UILabel alloc] init];

        label.font = [UIFont systemFontOfSize:15.0f];

        label.text = chunk;

        label.userInteractionEnabled = isLink;

        

        if (isLink)

        {

            label.textColor = [UIColor colorWithRed:110/255.0f green:181/255.0f blue:229/255.0f alpha:1.0];

            label.highlightedTextColor = [UIColor yellowColor];

            

            // 5. Set tap gesture for this clickable text:

            SEL selectorAction = isTermsOfServiceLink ? @selector(tapOnTermsOfServiceLink:) : @selector(tapOnPrivacyPolicyLink:);

            UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self

                                                                                         action:selectorAction];

            [label addGestureRecognizer:tapGesture];

            

            // Trim the markup characters from the label:

            if (isTermsOfServiceLink)

                label.text = [label.text stringByReplacingOccurrencesOfString:@"<ts>" withString:@""];

            if (isPrivacyPolicyLink)

                label.text = [label.text stringByReplacingOccurrencesOfString:@"<pp>" withString:@""];

        }

        else

        {

            label.textColor = [UIColor blackColor];

        }

        

        // 6. Lay out the labels so it forms a complete sentence again:

        

        // If this word doesn't fit at end of this line, then move it to the next

        // line and make sure any leading spaces are stripped off so it aligns nicely:

        

        [label sizeToFit];

        

        if (self.agreeTextContainerView.frame.size.width < wordLocation.x + label.bounds.size.width)

        {

            wordLocation.x = 0.0;                       // move this word all the way to the left...

            wordLocation.y += label.frame.size.height;  // ...on the next line

            

            // And trim of any leading white space:

            NSRange startingWhiteSpaceRange = [label.text rangeOfString:@"^\\s*"

                                                                options:NSRegularExpressionSearch];

            if (startingWhiteSpaceRange.location == 0)

            {

                label.text = [label.text stringByReplacingCharactersInRange:startingWhiteSpaceRange

                                                                 withString:@""];

                [label sizeToFit];

            }

        }

        

        // Set the location for this label:

        label.frame = CGRectMake(wordLocation.x,

                                 wordLocation.y,

                                 label.frame.size.width,

                                 label.frame.size.height);

        // Show this label:

        [self.agreeTextContainerView addSubview:label];

        

        // Update the horizontal position for the next word:

        wordLocation.x += label.frame.size.width;

    }

}

- (void)tapOnTermsOfServiceLink:(UITapGestureRecognizer *)tapGesture

{

    if (tapGesture.state == UIGestureRecognizerStateEnded)

    {

        NSLog(@"User tapped on the Terms of Service link");

    }

}

- (void)tapOnPrivacyPolicyLink:(UITapGestureRecognizer *)tapGesture

{

    if (tapGesture.state == UIGestureRecognizerStateEnded)

    {

        NSLog(@"User tapped on the Privacy Policy link");

    }

}