自定義類問題的UIKeyboardWillShowNotification

Question

我有一個帶文本框的自定義UITableViewCell。單元格的文本字段設置爲調用委託函數。 裏面

-(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; 
} 

這是委託方法被稱爲我的自定義cell.However調用時，當按下「返回」鍵，不會刪除該UIKeyBoardWillHideNotification的addObserver對象。有沒有辦法解決這個問題？

Answer 1

你好Ganesh謝謝你的答案。我刪除了resignFirstResponder並將第一個響應者直接傳遞給下一個文本字段。這防止了鍵盤消失。

Answer 2

嘗試這樣

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

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

，並檢查該鏈接textFieldShouldBeginEditing + UIKeyboardWillShowNotification + OS 3.2

它可以幫助你。