我有一个有趣的问题，我似乎无法找出它发生的原因，可能是我忽略的一些小问题。
我有一个 UITableView 并且在我的 didselectrowatindex 路径中导航到一个新视图，然后导航到下一个视图并弹出两个视图以返回第一个视图，然后应用程序因 EXC_BAD_ACCESS 而崩溃
所以我使用了instruments和NSZombie，在didselectrowatindexpath中找到了一个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：
我忘了提到的是，在某些情况下，我将同一类的另一个推送到导航控制器上，但只有在转到 WorkflowViewController 然后到下一个视图控制器然后返回两次时才会引发异常