Ios UITextView检测字点击式链接

假设我有一个文本视图，其中包含属性文本，如“11 22 333”。我希望用户能够点击11并执行操作，点击22并执行操作，依此类推。我不能只把按钮放在顶部，因为标签总是在变化。我怎样才能检测到这个

<UITextViewDelegate>

textViewForCountDown.delegate = self;

////

[hour setText:[NSString stringWithFormat:@"%ld", (long)[components day] * 24 + (long)[components hour]]];
[minute setText:[NSString stringWithFormat:@"%ld", (long)[components minute]]];
[second setText:[NSString stringWithFormat:@"%ld", (long)[components second]]];
[second2 setText:[NSString stringWithFormat:@"%ld", (long)[components second] - 1]];

    UIFont *mediumFont = [UIFont fontWithName:@"FuturaPT-Heavy" size:65];
    UIColor *mediumColor = [self colorWithHexString:@"ffbc00"];
    NSDictionary *arialDict = [NSDictionary dictionaryWithObjects:@[mediumFont, mediumColor] forKeys:@[NSFontAttributeName,NSForegroundColorAttributeName]];
    NSMutableAttributedString *aAttrString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@", second.text] attributes: arialDict];

    UIColor *thinColor = [self colorWithHexString:@"353535"];
    NSDictionary *verdanaDict = [NSDictionary dictionaryWithObjects:@[mediumFont, thinColor] forKeys:@[NSFontAttributeName,NSForegroundColorAttributeName]];
    NSMutableAttributedString *vAttrString = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%@", minute.text] attributes:verdanaDict];

    UIColor *thinColor2 = [self colorWithHexString:@"929292"];
    NSDictionary *verdanaDict2 = [NSDictionary dictionaryWithObjects:@[mediumFont, thinColor2] forKeys:@[NSFontAttributeName,NSForegroundColorAttributeName]];
    NSMutableAttributedString *vAttrString2 = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%@", hour.text] attributes:verdanaDict2];

    [aAttrString appendAttributedString:vAttrString];
    [aAttrString appendAttributedString:vAttrString2];
    textViewForCountDown.attributedText = aAttrString;

    //Currently the textViewForCountDown displays 29 9 381.

    //The user should be able to click on the 29 and have an action occur (action 1)
    //The user should be able to click on the 9 and have an action occur (action 2)
    //The user should be able to click on the 381 and have an action occur (action 3)

textViewForCountDown.delegate=self；
////
[hour setText:[NSString stringWithFormat:@“%ld”，（长）[组件日]*24+（长）[组件小时]]；
[minute setText:[NSString stringWithFormat:@“%ld”，长）[components minute]]；
[second setText:[NSString stringWithFormat:@“%ld”，长）[组件秒]]；
[second2 setText:[NSString stringWithFormat:@“%ld”，长）[组件秒]-1]；
UIFont*mediumFont=[UIFont fontWithName:@“FuturaPT Heavy”大小：65]；
UIColor*mediumColor=[self colorWithHexString:@“ffbc00”]；
NSDictionary*ArialDictionary=[NSDictionary Dictionary WithObjects:@[mediumFont，mediumColor]forKeys:@[NSFontAttributeName，NSForegroundColorAttributeName]]；
NSMutableAttributedString*aAttrString=[[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@“%@”，second.text]属性：arialDict]；
UIColor*thinColor=[自身颜色与十六进制字符串：@“3535”]；
NSDictionary*verdanaDict=[NSDictionary Dictionary WithObjects:@[mediumFont，thinColor]forKeys:@[NSFontAttributeName，NSForegroundColorAttributeName]]；
NSMutableAttributedString*vAttrString=[[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@“%@”，minute.text]属性：verdanaDict]；
UIColor*thinColor2=[self colorWithHexString:@“929292”]；
NSDictionary*verdanaDict2=[NSDictionary Dictionary WithObjects:@[mediumFont，thinColor2]forKeys:@[NSFontAttributeName，NSForegroundColorAttributeName]；
NSMutableAttributedString*vAttrString2=[[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@“%@”，hour.text]属性：verdanaDict2]；
[aAttrString AppendAttributeString:vAttrString]；
[aAttrString AppendAttributeString:vAttrString2]；
textViewForCountDown.attributedText=aAttrString；
//当前，文本ViewForCountdown显示29 9 381。
//用户应该能够单击29并执行操作（操作1）
//用户应该能够单击9并执行操作（操作2）
//用户应该能够单击381并执行操作（操作3）