改变字符串中指定字符的颜色

- (void)viewDidLoad {
NSMutableAttributedString *gitStr = [self ChangeStrColor:[Util IncreaseDecimal:@"不同颜色的字符组成的字符串显示"] Loction:5];

label.attributedText = gitStr;
}

- (NSMutableAttributedString *)ChangeStrColor:(NSString *)ColorStr Loction:(NSInteger)loction {
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:ColorStr];
NSInteger lengh = [str length];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0,loction)];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(lengh-3,3)];

return str;
}