如何在IOS7中使#key和@key可点击 [英] how to make #key and @key clickable in IOS7

问题描述

任何人都知道如何在IOS7中的评论文本中使#KEY和@NAME可以点击（例如，与Instagram相同的方式）？我正在尝试使用NSMutableAttributedString，但我不确定如何检测点击事件，在下图中点击@Username应该将用户带到用户的个人资料

Anyone knows how I can make the #KEY and @NAME clickable in the text of comments in IOS7 (the same way that instagram does it for example)? i am trying to use NSMutableAttributedString but I'm not sure how to detect click event, in the image below clicking @Username should take the user to the profile of the user

推荐答案

查看 UITextViewDelegate protocol ，iOS7中有一个新方法： textView： shouldInteractWithURL：inRange：。

Looking at the UITextViewDelegate protocol, there is a new method in iOS7: textView:shouldInteractWithURL:inRange:.

您没有共享任何代码，但可以安全地假设您有一个 attributionString 和范围表示您变成蓝色的区域。我还假设您可以将用户名提取到名为 username 的变量中。

You didn't share any code, but it is safe to assume you have an attributedString and a range representing the area you turned blue. I'll also assume you can extract the username into a variable called username.

这三条信息，你将链接属性添加到该范围。

With these three pieces of information, you add a link attribute to that range.

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

在你的代表中，你可以这样做：

In your delegate, you could do something like this:

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange
{
    if ([URL.scheme isEqualToString:@"username"]) {
        [self doSomethingWithUserName:URL.host];
        return NO;
    }

    return YES;
}

我相信他们在WWDC 2013的介绍文本工具包会议中进行了演示。

I believe they demoed this in the Introducing Text Kit session at WWDC 2013.

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