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];  return attributeStr;}