iOS学习-UITextField设置placeholder的颜色

UITextField *text = [[UITextField alloc] initWithFrame:CGRectMake(, , , )];
text.borderStyle = UITextBorderStyleRoundedRect;

NSMutableAttributedString * attributedStr = [[NSMutableAttributedString alloc]initWithString:@"密码"];
[attributedStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(, attributedStr.length)];
text.attributedPlaceholder = attributedStr;

[self.view addSubview:text];