label 分行显示 设置行间距

1.有时候会遇到 多行显示的比如显示了：金额，时间，日期啥的 这样 不用创建好几个label 一个label 就可以。具体如下：

NSString *str = @"借款金额:200,00元\n借款期限:3个月\n还款方式:等额本息\n放款银行:招商银行尾号1234"；

 //调整行间距
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:dic[@"detail2"]];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:5];//调整行间距
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [dic[@"detail2"] length])];
NSDictionary *dicAttribute =@{NSParagraphStyleAttributeName:paragraphStyle,NSFontAttributeName:Font_Message_CellSubTitle} ;
_lblContentsDetail.numberOfLines = 0;
_lblContentsDetail.lineBreakMode = NSLineBreakByWordWrapping;
_lblContentsDetail.attributedText = attributedString;

//调整高度
CGSize labelDetailSize = [dic[@"detail2"]   boundingRectWithSize:CGSizeMake(SCREEN_WIDTH-50,MAXFLOAT)
                                                         options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
                                                      attributes:dicAttribute
                                                         context:nil].size;

_lblContentsDetail.frame = CGRectMake(25, 0, SCREEN_WIDTH - 50, labelDetailSize.height);

2.渐变字体Label

UIColor *titleColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"btn.png"]];

NSString *title = @"Setting";

UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 80, 44)];

titleLabel.textColor = titleColor;

titleLabel.text = title;

titleLabel.font = [UIFont boldSystemFontOfSize:20];

titleLabel.backgroundColor = [UIColor clearColor];

[self.view addSubview:titleLabel];