将click事件添加到ios NSString中的某些文本 [英] Add a click event to some text in ios NSString

问题描述

我有以下代码，并且想让我的文本部分可以点击并调用另一个UIViewController（而不是网站）。

I have the following code and want to make parts of my text be clickable and call another UIViewController (not a website).

NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"testing it out @clickhere"];
NSInteger length = str.length;
[str addAttribute:NSForegroundColorAttributeName value:[UIColor bestTextColor] range:NSMakeRange(0,length)];

NSMutableAttributedString设置为UILabel，如下所示：

The NSMutableAttributedString gets set to a UILabel like so:

label.attributedText = str;

最好的方法是什么？我似乎无法找到一个好的答案。

Whats the best way to do this? I can't seem to find a great answer.

我想要的一个例子是假设我有一个UILabel，如下所示：

An example of what I want is suppose I have a UILabel like so with the following text:

This is my label.  Click here to go to UIViewController1 and then go to UIViewController1 by this #tag.

我希望第一次点击事件和单词#tag传递here文本要传递给相同的点击事件。

I want the text "here" to be passed for the first click event and the word "#tag" to be passed to the same click event.

推荐答案

如果您使用值字段传入目的地该怎么办？

What if you used the value field to pass in the destination?

[attributedString addAttribute:NSLinkAttributeName
                         value:[@"destinationController1" stringByAppendingString:username]
                         range:range];

然后覆盖委托方法：

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange
{
    if ([URL.scheme isEqualToString:@"destinationController1"]) {
        // Launch View controller
        return NO;
    }
    return YES;
}

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