【iOS】首行缩进两个字符

NSString *_test  =  @"首行缩进根据字体大小自动调整 间隔可自定根据需求随意改变。。。。。。。" ;  
    NSMutableParagraphStyle *paraStyle01 = [[NSMutableParagraphStyle alloc] init];  
    paraStyle01.alignment = NSTextAlignmentLeft;  //对齐 
    paraStyle01.headIndent = 0.0f;//行首缩进 
//参数：（字体大小17号字乘以2，34f即首行空出两个字符） 
CGFloat emptylen = self.contentLabel.font.pointSize * 2;  
    paraStyle01.firstLineHeadIndent = emptylen;//首行缩进 
    paraStyle01.tailIndent = 0.0f;//行尾缩进 
    paraStyle01.lineSpacing = 2.0f;//行间距 

    NSAttributedString *attrText = [[NSAttributedString alloc] initWithString:_test attributes:@{NSParagraphStyleAttributeName:paraStyle01}];  

self.contentLabel.attributedText = attrText;  

原文地址

http://blog.csdn.net/leemin_ios/article/details/52045387