5

我可以使用以下代码成功地将点击手势添加到 UITextView 的一部分：

UITextPosition *pos = textView.endOfDocument;// textView ~ UITextView

for (int i=0;i<words*2-1;i++){// *2 since UITextGranularityWord considers a whitespace to be a word

    UITextPosition *pos2 = [textView.tokenizer positionFromPosition:pos toBoundary:UITextGranularityWord inDirection:UITextLayoutDirectionLeft];
    UITextRange *range = [textView textRangeFromPosition:pos toPosition:pos2];
    CGRect resultFrame = [textView firstRectForRange:(UITextRange *)range ];

    UIView* tapViewOnText = [[UIView alloc] initWithFrame:resultFrame];
    [tapViewOnText addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(targetRoutine)]];
    tapViewOnText.tag = 125;
    [textView addSubview:tapViewOnText];

    pos=pos2;
}

我希望在 a 中模仿相同的行为UILabel。问题是，UITextInputTokenizer（用于标记单个单词）在 中声明UITextInput.h，并且只有UITextView&UITextField符合UITextInput.h; UILabel才不是。有解决方法吗？

4

5 回答 5

3

尝试这个。让你的标签是label：

  //add gesture recognizer to label
  UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] init];
  [label addGestureRecognizer:singleTap];
  //setting a text initially to the label
  [label setText:@"hello world i love iphone"];

 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {

UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];

CGRect rect = label.frame;
CGRect newRect = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width/2, rect.size.height);

if (CGRectContainsPoint(newRect, touchPoint)) {
    NSLog(@"Hello world");
}
}

单击标签的前半部分将起作用（它提供日志输出）。不是另一半。

于 2013-07-24T10:04:47.257 回答
3

这是一个轻量级库，专门用于 UILabel FRHyperLabel中的链接。

要达到这样的效果：

Lorem ipsum dolor sit amet, consectetur adipiscing elit。Pellentesque quis blandit eros，坐在 amet vehicula justo。Nam at urna neque。Maecenas ac sem eu sem porta dictum nec vel tellus。

使用代码：

//Step 1: Define a normal attributed string for non-link texts
NSString *string = @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque quis blandit eros, sit amet vehicula justo. Nam at urna neque. Maecenas ac sem eu sem porta dictum nec vel tellus.";
NSDictionary *attributes = @{NSFontAttributeName: [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline]};

label.attributedText = [[NSAttributedString alloc]initWithString:string attributes:attributes];


//Step 2: Define a selection handler block
void(^handler)(FRHyperLabel *label, NSString *substring) = ^(FRHyperLabel *label, NSString *substring){
    NSLog(@"Selected: %@", substring);
};


//Step 3: Add link substrings
[label setLinksForSubstrings:@[@"Lorem", @"Pellentesque", @"blandit", @"Maecenas"] withLinkHandler:handler];
于 2015-09-23T17:44:32.957 回答
2

One option would be to use a non-editable UITextView instead of a UILabel. Of course this may or may not be a suitable solution depending on your exact needs.

于 2013-07-24T07:00:44.787 回答
0

您可以尝试https://github.com/mattt/TTTAttributedLabel并添加标签链接。当链接被按下时，你会得到一个动作，所以标签点击的一部分只起作用，你必须自定义标签的链接部分。我过去试过这个，它工作得很好，但我的客户对使用第三方组件不感兴趣，所以使用 UIWebView 和 HTML 复制了这个功能。

于 2013-07-24T07:46:37.860 回答
-3

这是如何添加UITapGestureRecognizer到您的控件的基本代码；

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];        
[MyLabelName addGestureRecognizer:singleTap];        
[self.view addSubView:MyLabelName]

这是您点击MyLabelName;时调用的方法

-(void)handleSingleTap:(UILabel *)myLabel
{
    // do your stuff;
}
于 2013-07-24T06:51:48.707 回答