Question

我需要在我的应用程序中选择正确的单元格后禁用选择其他单元格因此，如果用户选择了错误答案，他可以选择其他单元格，但如果选择正确答案，则他不能这样做帮我解决我的问题。我的代码是：

- (void) tableView: (UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath {

UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
NSInteger rowNumber = [indexPath row];
NSArray *array = [self getAnswers];
if (rowNumber == 0)
{
    cell.contentView.backgroundColor = [UIColor whiteColor];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
if (rowNumber == [array[array.count - 2] intValue])
{
    cell.contentView.backgroundColor = [UIColor colorWithRed:0.0 green:1.0 blue:0.0 alpha:1.0];
    [_rightAnswersArray addObject:[NSNumber numberWithInt:_index+1]];
    NSLog(@"rightAnswersArray = %@",_rightAnswersArray);
    for (rowNumber = 1; rowNumber < array.count - 1; rowNumber++)
    {
        cell.userInteractionEnabled = NO;
    NSLog(@"%hhd",cell.userInteractionEnabled);
    }
}
else
{
    cell.contentView.backgroundColor = [UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:1.0];
    [_wrongAnswersArray addObject:[NSNumber numberWithInt:_index+1]];
    NSLog(@"wrongAnswersArray = %@",_wrongAnswersArray);
    [self showComment];
}
}

UPD：解决了这段代码。

if (rowNumber == [array[array.count - 2] intValue])
{
cell.contentView.backgroundColor = [UIColor colorWithRed:0.0 green:1.0 blue:0.0 alpha:1.0];
[_rightAnswersArray addObject:[NSNumber numberWithInt:_index+1]];
NSLog(@"rightAnswersArray = %@",_rightAnswersArray);
for (rowNumber = 1; rowNumber < array.count - 1; rowNumber++)
self.tableView.allowsSelection = NO;
}

Answer 1

您应该实施UITableViewDelegate方法

// Called before the user changes the selection. Return a new indexPath, or nil, to change the proposed selection.
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath;

看起来应该是这样的

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    return _isRightAnswerAlreadySelected ? nil : indexPath;
}

应在_isRightAnswerAlreadySelected

中设置

(void) tableView: (UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath

禁用在didSelectRowAtIndexPath之后选择其他单元格

1 个答案: