iOS開發(fā)中經(jīng)常會遇到要將一段文字添加下劃線并且附上點擊事件的需求, 默認情況下UILabel是不支持點擊事件的，那么怎樣才能實現(xiàn)這種效果呢?下面介紹一種簡單的方法,代碼如下:

- (void)viewDidLoad {
    [super viewDidLoad];
    UILabel *underlineLabel = [[UILabel alloc] initWithFrame:(CGRectMake(100, 50, 150, 30))];
    NSString *textStr = @"$1234567890";
    
    // 下劃線
    //注意: NSStrikethroughStyleAttributeName 是添加中劃線,這時textStr如果是中文字符則沒有效果
    NSDictionary *attribtDic = @{NSUnderlineStyleAttributeName : [NSNumber numberWithInteger:NSUnderlineStyleSingle], NSUnderlineColorAttributeName : [UIColor redColor]};
    NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:textStr attributes:attribtDic];
    
    //賦值
    underlineLabel.attributedText = attribtStr;
    
    UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(labelClick)];
    
    [underlineLabel addGestureRecognizer:gestureRecognizer];
    underlineLabel.userInteractionEnabled = YES;
    
    [self.view addSubview:underlineLabel];
}

- (void)labelClick {
    NSLog(@"underlineLabel被點擊了");
}