iOS label行间距

UILabel *label = [[UILabel alloc] init];
label.font = [UIFont sportsFontNormal];
label.textColor = [UIColor sportsGrayColor];
label.textAlignment = NSTextAlignmentLeft;
label.numberOfLines = 0;
[view addSubview:label];
NSString *labelText = @"我是测试员我是测试员;我是测试员我是测试员我是测试员我是测试员我是测试员我是测试员我是测试员我是测试员我是测试员我是测试员";
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:10.0f];//调整行间距
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
label.attributedText = attributedString;
[label sizeToFit];