实现label中字体不同颜色，不同size：

//设置价格数据

-(void)dealPriceSizeAndColor:(NSString *)priceStr{

NSString *currentPrice =[NSString stringWithFormat:@"您发布的商品的售价为￥%@元，请再次确认售价是否有误？",priceStr];

//创建Attributed

NSMutableAttributedString *noteStr =[[NSMutableAttributedString alloc]initWithString:currentPrice];

//需要改变的第一个文字的位置

NSUInteger startL =[[noteStr string]rangeOfString:@"为"].location + 1;

//需要改变的区间

NSUInteger finishL =[[noteStr string]rangeOfString:@"元"].location;

//需要改变的区间

NSRange range = NSMakeRange(startL,finishL - startL);

//改变颜色

[noteStr addAttribute:NSForegroundColorAttributeName value:TEXT_COLOR_RED range:range];

//改变字体大小及类型

[noteStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:18]range:range];

//为label添加Attributed

[_titleL setAttributedText:noteStr];

}