设置UILabel的行间距

UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 40)];

NSString *title = @"拖动查看图片详情反倒是发开始大幅度书法家第三方第三方士大夫四大皆空飞快的书法家第三方发动机法师打发第三方反倒是发惊世毒妃看发动机所发生的防守打法";

label.numberOfLines = 0;

label.textColor = [UIColor colorWithHexString:@"#999999"];

label.font = [UIFont systemFontOfSize:10];

label.textAlignment = NSTextAlignmentCenter;

NSMutableParagraphStyle *fif = [[NSMutableParagraphStyle alloc]init];

fif.lineSpacing = 5;

NSMutableAttributedString *attributing = [[NSMutableAttributedString alloc]initWithString:title];

[attributing addAttribute:NSParagraphStyleAttributeName value:fif range:NSMakeRange(0, title.length)];

label.attributedText = attributing;

还可以设置一行文字的颜色不一样，大小不一样；