自定义类问题的UIKeyboardWillShowNotification

Question

我有一个带文本框的自定义UITableViewCell。单元格的文本字段设置为调用委托函数。 里面

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

       [[NSNotificationCenter defaultCenter] removeObserver:self 
name:UIKeyboardWillShowNotification 
object:nil]; 

        [[NSNotificationCenter defaultCenter] removeObserver:self 
name:UIKeyboardWillHideNotification 
object:nil]; 



        if(textField == fromTF){ 

         fromTF.text = [[[fromTF.text substringToIndex:2] stringByAppendingString:@":"] stringByAppendingString:[fromTF.text substringFromIndex:2]]; 
         [toTF becomeFirstResponder]; 
         return YES; 
        } 
        if(textField == toTF){ 
         [toTF resignFirstResponder]; 
         [intTF becomeFirstResponder]; 
         return YES; 

         } 

      return YES; 
} 

这是委托方法被称为我的自定义cell.However调用时，当按下“返回”键，不会删除该UIKeyBoardWillHideNotification的addObserver对象。有没有办法解决这个问题？

Answer 1

你好Ganesh谢谢你的答案。我删除了resignFirstResponder并将第一个响应者直接传递给下一个文本字段。这防止了键盘消失。

Answer 2

尝试这样

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

    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil]; 
} 

，并检查该链接textFieldShouldBeginEditing + UIKeyboardWillShowNotification + OS 3.2

它可以帮助你。