ios UIAlertView 自带的UITextField为什么这么窄？

Question

如题，哪位知道请帮忙解惑，急！急！急！

Answer 1

附上源码

• (void)buidl
  {
  UIAlertView *customAlertView = [[[UIAlertView alloc] initWithTitle:@"自定义服务器地址" message:nil delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil] autorelease];
  [customAlertView setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];

  UITextField *nameField = [customAlertView textFieldAtIndex:0];
  nameField.placeholder = @"请输入一个名称";

  UITextField *urlField = [customAlertView textFieldAtIndex:1];
  [urlField setSecureTextEntry:NO];
  urlField.placeholder = @"请输入一个URL";
  urlField.text = @"http://";

  [customAlertView show];
  }