iphone - resignFirstResponder 未按预期工作

Question

我有 uitextfield 在 uitableview 中输入国家/地区值。当点击该字段时，我将显示已加载国家/地区值的表格 View 。

点击任何单元格时，它会返回到相同的表单，并将所选值添加到国家/地区字段中。我的意思是我将选定的值分配给 viewwillappear 方法内的文本字段。在国家/地区字段中设置文本后。我想放弃键盘，所以我添加了resignFirstResponder，但它不是放弃键盘。

下面是我的代码:

 - (void)textFieldDidBeginEditing:(UITextField *)textField;
    {
      if( textField == self.myCountryField ){

        aCountryListView = 
            [[LCCountryListViewController alloc]init]; 

        UINavigationController *navigationController = 
            [[UINavigationController alloc] 
             initWithRootViewController:aCountryListView];

        [self presentModalViewController:navigationController animated:YES];

      }
    }
-(void)viewWillAppear:(BOOL)animated{
//-----------------------------------

  self.myCountryField.text = aCountryListView.mySelectedCountry;

  [self.myCountryField resignFirstResponder];

  [[NSNotificationCenter defaultCenter] addObserver:self 
    selector:@selector(keyboardWillShow:) 
    name:UIKeyboardWillShowNotification object:nil];

  [[NSNotificationCenter defaultCenter] addObserver:self 
  selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:
(NSIndexPath *)indexPath 
//-------------------------------------------------------------------------------
{  
  static NSString *CellIdentifier = @"PoetNameCell";

  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (cell == nil) 
  {
      cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

    cell.selectionStyle = UITableViewCellSelectionStyleNone;

   cell.backgroundColor = [UIColor clearColor];

    if( indexPath.row == 0 ){

      UILabel *aLblTitle = [[UILabel alloc]initWithFrame:CGRectMake(5, 5, 220, 30)];
      aLblTitle.backgroundColor = [UIColor clearColor];
      aLblTitle.font = [UIFont fontWithName:@"Palatino-Bold" size:16.0];
      aLblTitle.text = NSLocalizedString(@"Country","Country");
      aLblTitle.textColor = [UIColor whiteColor];
      [cell.contentView addSubview:aLblTitle];

      myCountryField = [[UITextField alloc]initWithFrame:CGRectMake(133,5,150,30)];
      myCountryField.backgroundColor = [UIColor whiteColor];
      myCountryField.delegate = self;
      myCountryField.borderStyle = UITextBorderStyleRoundedRect;

      [cell.contentView addSubview:myCountryField];
    }
  return cell;
}

Answer 1

使用以下代码，希望对您有所帮助。

- (BOOL)textFieldShouldReturn:(UITextField *)textField 
 {

  [self.view endEditing:YES];

  return YES;
}

确保您将您的代理人连接到 fileowner在xib-file .或在 viewDidload使用以下代码。

yourtextfield.delegate=self;

并在您的 .h 文件中使用 <UITextfielddelegate>