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UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
NSString *holderText = @"标哥的技术博客";
NSMutableAttributedString *placeholder = [[NSMutableAttributedString alloc]initWithString:holderText];
[placeholder addAttribute:NSForegroundColorAttributeName
value:[UIColor redColor]
range:NSMakeRange(0, holderText.length)];
[placeholder addAttribute:NSFontAttributeName
value:[UIFont boldSystemFontOfSize:16]
range:NSMakeRange(0, holderText.length)];
textField.attributedPlaceholder = placeholder;
[self.view addSubview:textField];









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