富文本及点击方法

static NSString *const kStringTip = @"如有问题，请拨打客服电话：010-57512156";

    _tip = [[UITextView alloc] init];  
    _tip.width = SCREEN_WIDTH - kSideOffset * 2.0;
    _tip.text = kStringTip;
    [_tip sizeToFit];
    _tip.top = labelY + 29;
    _tip.left = kSideOffset;
    _tip.delegate = self;
    [self.view addSubview:_tip];
    NSString * creat = @"010-57512156";
    NSString * showLabel = [NSString stringWithFormat:@"%@",kStringTip];
    _tip.userInteractionEnabled = YES;
    NSMutableAttributedString *AttributedStr = [[NSMutableAttributedString alloc]initWithString:showLabel];
    NSRange range = [showLabel rangeOfString:creat];
    [AttributedStr addAttribute:NSForegroundColorAttributeName
     
                          value:COLOR_GRAY3
     
                          range:NSMakeRange(range.location, range.length)];//字体颜色
    [AttributedStr addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleDouble] range:NSMakeRange(range.location, range.length)];//字加下划线
    [AttributedStr addAttribute:NSLinkAttributeName value:@"tel://" range:NSMakeRange(range.location, range.length)];//加点击事件
    _tip.attributedText = AttributedStr;
    _tip.editable = NO;//这个一定要设置
    _tip.userInteractionEnabled = YES;
    _tip.textColor = COLOR_GRAY3;//在设置完富文本之后设置textview的字体颜色才会生效
    _tip.font = [UIFont systemFontOfSize:12];//在设置完富文本之后设置textview的字体大小才会生效

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
    if ([[URL scheme] isEqualToString:@"tel"]){
        NSString *phoneNumber = [NSString stringWithFormat:@"telprompt://%@",@"010-57512156"];
        NSURL *url = [NSURL URLWithString:phoneNumber];
        if ([[UIApplication sharedApplication]canOpenURL:url]) {
            [[UIApplication sharedApplication]openURL:url];
        }
        return NO;
    }
    return YES;
}