有的时候需要显示的字符串带有不同颜色，字体大小也不同，这时就可以用NSMutableAttributedString来设置字符串。
通过设置Attributed(特性)来改变:
- NSForegroundColorAttributeName
- NSFontAttributeName
- NSStrokeColorAttributeName
- NSStrokeWidthAttributeName
- NSShadowAttributeName
- NSObliquenessAttributeName
- NSExpansionAttributeName
下面是主要代码:
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"请到店出示您的编码[5110001],为了您的账户安全请不要将您的编号随意转告他人,谢谢您的关顾"];
//设置文本颜色
[str addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(1, 4)];
//设置文本字体大小
[str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:NSMakeRange(1, 4)];
//设置文本颜色
[str addAttribute:NSForegroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(10,7)];
//设置文本字体大小
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Bold" size:15.0] range:NSMakeRange(10, 7)];
//stroke
[str addAttribute:NSStrokeColorAttributeName value:[UIColor lightGrayColor] range:NSMakeRange(5, 3)];
[str addAttribute:NSStrokeWidthAttributeName value:@(3.0) range:NSMakeRange(5, 3)];
[str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:22] range:NSMakeRange(5, 3)];
//加入阴影
NSShadow *shadow = [[NSShadow alloc] init];
shadow.shadowColor = [UIColor redColor];
shadow.shadowOffset = CGSizeMake(0, 0);
shadow.shadowBlurRadius = 5.0;
[str addAttribute:NSShadowAttributeName value:shadow range:NSMakeRange(23, 4)];
//扭曲
[str addAttribute:NSObliquenessAttributeName value:@(1.0) range:NSMakeRange(27, 3)];
//扩大
[str addAttribute:NSExpansionAttributeName value:@(0.5) range:NSMakeRange(30, 3)];
//设置段落间隔
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:10];
[str addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [str length])];
label1.attributedText = str;
label1.numberOfLines = 0;
效果图
