改变字符形状和颜色NSMutableAttributedString

NSMutableAttributedString *str = [[NSMutableAttributedString alloc]initWithString:@"我还是一样帅"];

//设置文字颜色

[str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 1)];

[str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(4, 1)];

//设置字体

[str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:30] range:NSMakeRange(1, 3)];

UILabel *label = [[UILabel alloc]init];

label.frame =CGRectMake(100, 200, 200, 50);

label.attributedText =str;

[self .view addSubview:label];