Ios 在自定义UITableViewCell中取消UITextField时出现问题

我在表视图中实现了一个自定义单元格。 在单元格内，我有一个文本字段（设置为数字键盘）。 在表视图中，我有12个单元格。 我可以用我放在自定义单元格类中的代码，用

触摸开始

（尽管只有当我点击正在编辑的活动单元格时，它才起作用）来打开键盘。 如果我将键盘更改为字母和数字，也可以关闭键盘。 我在键盘上有一个自定义的“完成”按钮，我希望它关闭文本字段

我试着用

endEditing:YES

或

[cell.textFieldAnswer resignFirstResponder]

关闭键盘已有一段时间了，但它不起作用

有什么想法吗

安全问题.m：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";

    cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {
        cell = [[GetQuestionsCustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
    }


    NSInteger nextIndexPathRow = indexPath.row;
    nextIndexPathRow++;
    cell.labelQuestion.text = [arrayOfQuestions objectAtIndex:indexPath.row];
    cell.labelQuestionNumber.text = [NSString stringWithFormat:@".%d", nextIndexPathRow];

    switch (indexPath.row) {
        case 0:
            tfA1 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 1:
            tfA2 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 2:
            tfA3 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 3:
            tfA4 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 4:
            tfA5 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 5:
            tfA6 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 6:
            tfA7 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 7:
            tfA8 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 8:
            tfA9 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 9:
            tfA10 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 10:
            tfA11 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
        case 11:
            tfA12 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
            break;
    }
    cell.textFieldAnswer.tag = indexPath.row;
    cell.textFieldAnswer.delegate = self;
    [cell.textFieldAnswer setText:[answers objectAtIndex:indexPath.row]];
    return cell;
}

GetQuestionsCustomCell.m：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self.textFieldAnswer resignFirstResponder];
}

编辑1:

当我这样做时：

[cellperformSelector@selector（按键：）]

我有一个裂缝。 向下键位于自定义单元视图控制器内。 注意：“单元格”被配置为我上面提到的自定义单元格

错误：

线程1:EXC\u错误访问（代码=2，地址=0x631ec）

编辑2: 感谢“Thilina”在私人聊天中的所有帮助，现在它可以工作了，修复：

- (void)doneAction:(id)sender{ 
NSArray *cells = [self.tableView visibleCells]; 
for(UIView *view in cells){ 
if([view isMemberOfClass:[GetQuestionsCustomCell class]]){ 
GetQuestionsCustomCell *cell = (GetQuestionsCustomCell *) view; 
UITextField *tf = (UITextField *)[cell textFieldAnswer]; 
if([tf isFirstResponder]){ 
[tf resignFirstResponder]; 
} 
} 

} 
}

1） 将代理UITextFieldDelegate添加到ViewController

@interface ViewController ()<UITextFieldDelegate>

3） 在tableView cellForRowAtIndexPath方法中更改开关

switch (indexPath.row) {
    case 0:{
        tfA1 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA1.delegate = self;
        }
        break;
    case 1:{
        tfA2 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA2.delegate = self;
    }break;
    case 2:{
        tfA3 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA3.delegate = self;
    }break;
    case 3:{
        tfA4 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA4.delegate = self;
    }break;
    case 4:{
        tfA5 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA5.delegate = self;
    }break;
    case 5:{
        tfA6 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA6.delegate = self;
    }break;
    case 6:{
        tfA7 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA7.delegate = self;
    }break;
    case 7:{
        tfA8 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA8.delegate = self;
    }break;
    case 8:{
        tfA9 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA9.delegate = self;
    }break;
    case 9:{
        tfA10 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA10.delegate = self;
    }break;
    case 10:{
        tfA11 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA11.delegate = self;
    }break;
    case 11:{
        tfA12 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA12.delegate = self;
    }break;
}

---

customcell的textfield的属性名称是什么？请发布您的方法，-（UITableViewCell*）tableView:（UITableView*）tableView cellForRowAtIndexPath:（NSIndexPath*）indexPathok，编辑并添加。添加并更改。当我点击一个按钮时，我将“resignFirstResponder”设置为所有tfA1…12。我将日志设置为textFieldShouldReturn，但仍然没有返回任何内容。什么也没发生。只有黑暗的接触才开始起作用。另外，“textfielddidediting”在重要时调用。好的，完成按钮的属性名是什么？我可以通过自定义单元格访问按钮吗？奇怪的是，普通键盘会自动关闭，但使用数字键盘不会。当我在父单元格中时，也许我可以执行位于自定义单元格中的选择器？是的，它在普通键盘上工作，但我不需要自定义“完成”按钮。是否在.h中包含KeyDown:method声明？

switch (indexPath.row) {
    case 0:{
        tfA1 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA1.delegate = self;
        }
        break;
    case 1:{
        tfA2 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA2.delegate = self;
    }break;
    case 2:{
        tfA3 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA3.delegate = self;
    }break;
    case 3:{
        tfA4 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA4.delegate = self;
    }break;
    case 4:{
        tfA5 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA5.delegate = self;
    }break;
    case 5:{
        tfA6 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA6.delegate = self;
    }break;
    case 6:{
        tfA7 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA7.delegate = self;
    }break;
    case 7:{
        tfA8 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA8.delegate = self;
    }break;
    case 8:{
        tfA9 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA9.delegate = self;
    }break;
    case 9:{
        tfA10 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA10.delegate = self;
    }break;
    case 10:{
        tfA11 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA11.delegate = self;
    }break;
    case 11:{
        tfA12 = (UITextField*)[cell viewWithTag:nextIndexPathRow];
        tfA12.delegate = self;
    }break;
}