Objective C如何添加textfield到导航栏 [英] Objective C how to add textfield into navigation bar

问题描述

我正在将一个文本字段添加到导航栏，但它不会显示在模拟器中。我在viewdidload里面这样做：

I'm trying to add a textfield into a navigation bar, but it doesn't show up in the simulator. I do it as follows inside viewdidload:

UITextView *textField = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, 170, 44)];
self.navigationItem.titleView = textField;

任何想法？

谢谢！ / p>

Thanks!

推荐答案

我已经这样做了。我知道你已经得到了回答现在
，但仍然这将有助于别人所以
这可以做如下

i have done it in this way. i know that you have got to the answer uptil now but still this will helpful to someone else so this can be done as follows

  -(void)viewWillAppear:(BOOL)animated
   {
     imgVw =[[UIImageView alloc]initWithFrame:CGRectMake(68, 7, 180, 28)];
     [imgVw setImage:[UIImage imageNamed:@"textfieldBackground.png"]];
     [self.navigationController.navigationBar addSubview:imgVw]; 

      textfieldTxt = [[UITextField alloc]initWithFrame:CGRectMake(78, 11, 170, 25)];
      textfieldTxt.backgroundColor = [UIColor clearColor];
      [textfieldTxt setAutocorrectionType:UITextAutocorrectionTypeNo];
       textfieldTxt.delegate = self; 
      [self.navigationController.navigationBar addSubview:textfieldTxt]; 

    }

请不要忘记从superview中删除，当viewdidunload

please don't forgot to remove from superview, when viewdidunload

 - (void)viewDidUnload
     {
     [super viewDidUnload];
     [textfieldTxt removeFromSuperview];
     [imgVw removeFromSuperview];
  }

感谢

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