iOS之textField的placeholder的字体颜色、大小

iOS之textField的placeholder的字体颜色、大小

textField.placeholder = @"username is in here!";  

<pre name="code" class="objc">[textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"];  [textField setValue:[UIFont boldSystemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"];