UILabel首行缩进

UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 320, 200)];

    titleLabel.text = @"测试首行缩进测试首行缩进测试首行缩进测试首行缩进测试首行缩进测试首行缩进测试首行缩进测试首行缩进";

    titleLabel.numberOfLines = 0;

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

    style.firstLineHeadIndent = 40;

    NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:titleLabel.text];

    [attrString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, 40)];

    titleLabel.attributedText = attrString;

    [self.view addSubview:titleLabel];