NSZombie在didSelectRowAtIndexPath中

Question

我有一个有趣的问题，我似乎无法找出它为什么会发生，可能是我忽略的小事。

我有一个UITableView，在我的didselectrowatindex路径中，我导航到一个新视图，然后导航到下一个视图并弹出两个视图以返回到第一个，然后应用程序崩溃与EXC_BAD_ACCESS

所以我使用了乐器和NSZombie并在didselectrowatindexpath找到了malloc，但我不知道为什么

这是我的代码：

if([workflowswithdirectories count] == 0)
{
    WorkflowViewController *aWorkFlow = [[WorkflowViewController alloc] init];
    MenuObject *obj = [workflownames objectAtIndex:[indexPath row]];
    aWorkFlow.heading = obj.name;
    aWorkFlow.workId = obj.workflowid;
    aWorkFlow.siteId = obj.siteid;
    aWorkFlow.item = obj;
    [self.navigationController pushViewController:aWorkFlow animated:YES];

}
else if([workflownames count] == 0)
{
    WorkflowListViewController *work = [[WorkflowListViewController alloc] init];
    work.siteId = self.siteId;
    MenuObject *obj = [workflowswithdirectories objectAtIndex:[indexPath row]];
    work.menu = obj.next;
    work.heading = obj.name;
    [self.navigationController pushViewController:work animated:YES];
}
else
{
    if([indexPath section] == 0)
    {
        WorkflowListViewController *work = [[WorkflowListViewController alloc] init];
        work.siteId = self.siteId;
        MenuObject *obj = [workflowswithdirectories objectAtIndex:[indexPath row]];
        work.menu = obj.next;
        work.heading = obj.name;
        [self.navigationController pushViewController:work animated:YES];
    }
    else
    {
        WorkflowViewController *aWorkFlow = [[WorkflowViewController alloc] init];
        MenuObject *obj = [workflownames objectAtIndex:[indexPath row]];
        aWorkFlow.heading = obj.name;
        aWorkFlow.workId = obj.workflowid;
        aWorkFlow.siteId = obj.siteid;
        aWorkFlow.item = obj;
        [self.navigationController pushViewController:aWorkFlow animated:YES];  //Malloc is on this line
    }
}  
[tableView deselectRowAtIndexPath:indexPath animated:YES];

编辑：

我忘记提到的是，在某些情况下，我将同一个类中的另一个推入导航控制器，但只有在转到WorkflowViewController然后再转到下一个viewcontroller然后返回两次才会抛出异常< / p>

Answer 1

为了记忆和效率，让所有UIViewControllers都具有强大的属性（使用支持iVar），以确保它们能够保持足够长的时间以备有用的东西。