UILable富文本操作

菜鸟一枚,本文章只为记忆而已

//想让lable可以换行显示,必须先设置显示内容,再设置高度.让lable自适应高度

UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 300, 0)];

NSString *str = @"\n人生若只如初见，\n何事秋风悲画扇。\n等闲变却故人心，\n却道故人心易变。\n骊山语罢清宵半，\n泪雨霖铃终不怨。何如薄幸锦衣郎，比翼连枝当日愿";

NSMutableAttributedString *attSTR = [[NSMutableAttributedString alloc]initWithString:str];

//添加字体和字体范围

[attSTR addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:30.0f] range:NSMakeRange(0, 3)];

//添加文字颜色和范围

[attSTR addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(17, 7)];

//给字符串添加下划线和范围(value :下划线的样式)

[attSTR addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithFloat:1.0] range:NSMakeRange(10, 10)];

//设置段落

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

//行间距

paragraph.lineSpacing = 10;

//段落间距

paragraph.paragraphSpacing = 30;

//对齐方式

paragraph.alignment = NSTextAlignmentLeft;

//指定段落开始的缩进像素

paragraph.firstLineHeadIndent = 50;

//调整全部文字的缩进像素

paragraph.headIndent = 10;

[attSTR addAttribute:NSParagraphStyleAttributeName value:paragraph range:NSMakeRange(0, [str length])];

lable.attributedText = attSTR;

lable.numberOfLines = 0;

[lable sizeToFit];

[self.view addSubview:lable];