请帮助: UINavigationController和视图控制器内存管理

Question

我有一个奇怪的问题，每次按下按钮时都会调用一个方法：

- (void)launcherView:(TTLauncherView*)lnchr didSelectItem:(TTLauncherItem*)itm {
  MyObject* obj = ...

  MyViewController* detailView = [[MyViewController alloc] init];  // line A
  [self.navigationController pushViewController:detailView animated:YES];
  [detailView setObject:obj];
  detailView = nil;  // should I also release it? -- line B
}

问题是，我很抱歉我不得不释放detailView (内存工具显示我有一个内存泄漏是没有完成的)，也因为navigationController应该保留我的detailView，但如果我试图在"A“行或"B”行添加自动释放，或者只是在"B“行添加detailView的释放(当然，在分配它为空之前)，程序崩溃，并向释放的实例CALayer发送EXC_BAD_ACCESS‘原因释放消息...

有什么想法吗？非常感谢

Answer 1

它能在不崩溃的情况下工作吗？

- (void)launcherView:(TTLauncherView*)lnchr didSelectItem:(TTLauncherItem*)itm {
  MyObject* obj = ...

  MyViewController* detailView = [[MyViewController alloc] init];
  [self.navigationController pushViewController:detailView animated:YES];
  //[detailView setObject:obj];  // <- What's this for?
  [detailView release]
}

Answer 2

这样试试吧。

- (void)launcherView:(TTLauncherView*)lnchr didSelectItem:(TTLauncherItem*)itm {
  MyObject* obj = ...

  MyViewController* detailView = [[MyViewController alloc] init]; 
  [detailView setObject:obj];
  [self.navigationController pushViewController:detailView animated:YES];
  [detailView release];
  detailView = nil;  // now this will be optional
}

Answer 3

试试"initwithnibname“

无关，但如果您正在追踪内存泄漏，请不要忘记释放MyObject