UILabel的行间距/段间距/缩进

Paste_Image.png

————例子代码在最后

NSMutableAttributedString 结合 NSMutableParagraphStyle
可以设置 ：

1. 行间距
   2.段落间距
   3.第一行头缩进
   ......

UILabel  *dLabel = _desLab;  
NSString *dLabelString = dLabel.text;  

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:dLabelString];  
NSMutableParagraphStyle   *paragraphStyle   = [[NSMutableParagraphStyle alloc] init];  
  
//行间距  
[paragraphStyle setLineSpacing:5.0];  
//段落间距  
[paragraphStyle setParagraphSpacing:10.0];  
//第一行头缩进  
[paragraphStyle setFirstLineHeadIndent:15.0];  
//头部缩进  
//[paragraphStyle setHeadIndent:15.0];  
//尾部缩进  
//[paragraphStyle setTailIndent:250.0];  
//最小行高  
//[paragraphStyle setMinimumLineHeight:20.0];  
//最大行高  
//[paragraphStyle setMaximumLineHeight:20.0];  
  
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [dLabelString length])];  
[dLabel setAttributedText:attributedString];

____ 上图代码

    UILabel *textLab = [[UILabel alloc] init];
    textLab.numberOfLines = 0;
    textLab.frame = �Rect; //  宏
    textLab.font = FontSize(15); //  宏
    NSString *string = @"1、在电脑端用浏览器打开http://xnyjf.com/ \n2、在网站页面顶部点击\"登录\"，登录新能源金服 \n3、进入我的账户，点击\"充值\" \n4、在充值页面选择\"网银充值\"";
    NSMutableAttributedString *att = [[NSMutableAttributedString alloc] initWithString:string];
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    paragraphStyle.headIndent = 25;
    paragraphStyle.paragraphSpacing = 10;
    [att addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, string.length)];
    [att addAttribute:NSForegroundColorAttributeName value:Title_Color range:NSMakeRange(0, string.length)];
    [att addAttribute:NSForegroundColorAttributeName value:Color_Blue_Prompt range:[string rangeOfString:@"http://xnyjf.com/"]];
    [att addAttribute:NSForegroundColorAttributeName value:Color_Blue_Prompt range:[string rangeOfString:@"登录"]];
    [att addAttribute:NSForegroundColorAttributeName value:Color_Blue_Prompt range:[string rangeOfString:@"充值"]];
    [att addAttribute:NSForegroundColorAttributeName value:Color_Blue_Prompt range:[string rangeOfString:@"网银充值"]];
    textLab.attributedText = att;