didSelectRowAtIndexPath问题

Question

您好，我有一个didSelectRowAtIndexPath的问题，我的应用程序崩溃与EXC-BAD-ACCESS时，一行被选中。奇怪的是，我在accessoryButtonTappedForRowWithIndexPath中有完全相同的代码段，并且它正确地显示了细节视图。以下是此方法的代码。

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

    NSUInteger row = [indexPath row];

    if(childController == nil)
    {
        childController = [[ScoreCardDetailViewController alloc]initWithNibName:@"ScoreCardDetailView" bundle:nil];
    }

    ScoreCard *selectedScoreCard = [self.list objectAtIndex:row];

    if([self checkPlusMinus:selectedScoreCard.score]==0||[self checkPlusMinus:selectedScoreCard.score]==1)
    {
        childController.title = [NSString stringWithFormat:@"%@  +%d",selectedScoreCard.course.courseName, selectedScoreCard.score];

        childController.selectedScoreCard = selectedScoreCard;
        UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle: @"Back" style: UIBarButtonItemStyleBordered target: nil action: nil];

        [[self navigationItem] setBackBarButtonItem: newBackButton];

        [newBackButton release];
        [self.navigationController pushViewController:childController animated:YES];

    }
    else
    {
        childController.title = [NSString stringWithFormat:@"%@  %d",selectedScoreCard.course.courseName, selectedScoreCard.score];

        UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle: @"Back" style: UIBarButtonItemStyleBordered target: nil action: nil];

        [[self navigationItem] setBackBarButtonItem: newBackButton];

        [newBackButton release];
        childController.selectedScoreCard = selectedScoreCard;
        [self.navigationController pushViewController:childController animated:YES];
    }

    childController=nil;

}

Answer 1

请尝试将"childController=nil;“替换为"childController release;”

Answer 2

好的，我已经修复了它，但是我不明白为什么它会工作。我在dealloc方法中释放了子控制器，并在viewdidunload中将其设置为nil，问题就解决了。有没有人能解释一下为什么这解决了这个问题？

Answer 3

我恳请那些在他们的应用程序中有随机崩溃的人，他们无法解释将NSZombieEnabled添加到构建环境中，有在线指南可以做到这一点，它将为你节省大量的时间！