问题
I have an NSTextView with automatic link detection enabled. When I set the text programmatically [myTextView setString:@"http://google.com"] it doesn't automatically show the link.
If I type anything into the text view it will add the link. I want it to add the link
回答1:
Had to spent some time searching for solution, but could not find it anywhere.
You do not need any third party libraries. Cocoa will do it for you.
checkTextInDocument: works only on editable textViews (Apple forgot to mention this). Here is code which works if your NSTextView is read only:
[myTextView setEditable:YES];
[myTextView checkTextInDocument:nil];
[myTextView setEditable:NO];
Do not forget to check "Smart links" in your .xib file
回答2:
I ended up adding a category that would do the job. It relies on a couple other categories for finding and formatting links.
I wrote a blog post about it here.
I also put a sample project up on GitHub.
回答3:
As noted in a comment on Randall's site, there is an easy way to do this in 10.6 or later:
[self.textView checkTextInDocument:nil];
Depending on how the view is set up, this may do more than just add links—for example it could add smart quotes. You can use setEnabledTextCheckingTypes: to specify what you want to check. In my case, I want to have smart quotes enabled while typing, but I don't want them added when I'm programmatically changing the text. So I can use something like this:
NSTextCheckingTypes oldTypes = self.textView.enabledTextCheckingTypes;
[self.textView setEnabledTextCheckingTypes:NSTextCheckingTypeLink];
[self.textView checkTextInDocument:nil];
[self.textView setEnabledTextCheckingTypes:oldTypes];
That will return the field to its previous behavior after the links have been added.
来源：https://stackoverflow.com/questions/7055131/automatic-link-detection-not-working-in-nstextview-after-programmatically-settin