iOS 更改UILabel某些字体样式方法

//str：要改变的字

//result：整个label里的字

//color: 字的颜色

- (NSMutableAttributedString *)changeSomeText:(NSString *)str inText:(NSString *)result withColor:(UIColor *)color {

  NSMutableAttributedString *attributeStr = [[NSMutableAttributedString alloc] initWithString:result];

  NSRange  colorRange = NSMakeRange([[attributeStr string]  rangeOfString:str].location,[[attributeStr string]  rangeOfString:str].length);

  [attributeStr addAttribute:NSForegroundColorAttributeName value:color range:colorRange];

  returnattributeStr;

}