//首先，创建一个NSAttributedString然后增加给它增加一个NSLinkAttributeName 属性，见以下：
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"This is an example by @marcelofabri_"];
[attributedString addAttribute:NSLinkAttributeName
value:@"username://marcelofabri_"
range:[[attributedString string] rangeOfString:@"@marcelofabri_"]];
NSDictionary *linkAttributes = @{NSForegroundColorAttributeName: [UIColor greenColor],
NSUnderlineColorAttributeName: [UIColor lightGrayColor],
NSUnderlineStyleAttributeName: @(NSUnderlinePatternSolid)};
// assume that textView is a UITextView previously created (either by code or Interface Builder)
textView.linkTextAttributes = linkAttributes; // customizes the appearance of links
textView.attributedText = attributedString;
textView.delegate = self;
textView.editable = NO; // 非编辑状态下才可以点击Url
这样就可以让链接在文本中显示。然而，你也可以控制当链接被点击的时候会发生什么，实现这个可以使用UITextViewDelegate协议的新的shouldInteractWithURL方法，就像这样：
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
if ([[URL scheme] isEqualToString:@"username"]) {
NSString *username = [URL host];
// do something with this username
// ...
return NO;
}
return YES; // let the system open this URL
}
例子
NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc]initWithString:str];
[attrStr addAttribute:NSLinkAttributeName value:[NSURL URLWithString:@"http://blog.csdn.net/hdfqq188816190/article/details/53556663"] range:[str rangeOfString:@"约炮之旅"]];
textview.attributedText = attrStr;
textview.delegate = self;
textview.editable = NO; // 非编辑状态下才可以点击Url
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
return YES;
}
