I use NSAttributeString to get something like above(include normal text ,underlined text and images) , and now I want do : if the user tapped on the underlined text area , I will do some special actions (open the web or sth). Now i can get the location of touches already , but can i find the locations (or area) of the underlined text ? so I can use both area to judge the tap position is located on underline text or not?
Use UITextView it is easy to implement. Add tap gesture on textview and when tap on textview check if tap on specific character or not.
textView.textContainerInset = UIEdgeInsetsZero;
[textView setContentInset:UIEdgeInsetsZero];
textView.attributedText = @"your attributedString";
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(textTapped:)];
[textView addGestureRecognizer:tap];
Add Gesture implementation method
- (void)textTapped:(UITapGestureRecognizer *)recognizer
{
UITextView *textView = (UITextView *)recognizer.view;
/*--- Get range of string which is clickable ---*/
NSRange range = [textView.text rangeOfString:@"Your Clickable String"];
NSLayoutManager *layoutManager = textView.layoutManager;
CGPoint location = [recognizer locationInView:textView];
NSUInteger characterIndex = [layoutManager characterIndexForPoint:location inTextContainer:textView.textContainer fractionOfDistanceBetweenInsertionPoints:NULL];
if (characterIndex >= range.location && characterIndex < range.location + range.length - 1)
{
NSLog(@"Text Tapped:");
}
}
As per my understanding you can UItextview and its delegate will help.
Step 1
{
NSURL *URL = [NSURL URLWithString: @"http://www.sina.com"];
NSMutableAttributedString * str = [[NSMutableAttributedString alloc] initWithString:"Your text to display"];
[str addAttribute: NSLinkAttributeName value:URL range: NSMakeRange(0, str.length)];
_textview.attributedText = str;
}
Step 2 Add delegate
-(BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange
{
NSLog(@"URL:: %@",URL);
//You can do anything with the URL here (like open in other web view).
[[UIApplication sharedApplication] openURL:URL];
return YES;
}
Step 3 Editable (No),Selectable (Yes), Links is optional
Hope it will help you..!
you can use html string in attribute string like this:
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType } documentAttributes:nil error:nil];
