iphone - 添加视图的按钮不起作用

Question

我在 Test1ViewController.m 中推送 test2ViewController，

Test2ViewController *test2ViewController = [[Test2ViewController alloc] initWithNibName:@"Test2ViewController" bundle:nil];
[self.navigationController pushViewController:test2ViewController animated:YES];

在 Test2ViewController.m 中，我插入了一个子视图 test3ViewController，

Test3ViewController *test3ViewController = [[Test3ViewController alloc] initWithNibName:@"Test3ViewController" bundle:nil];
[self.view addSubview:test3ViewController.view];

我的问题，我想在 test3ViewController 中推送一个新视图（test4ViewController），但是 test3ViewController.view 中的按钮操作不起作用

-(IBAction) goButtonAction:(id) sender {
    Test4ViewController *test4ViewController = [[Test4ViewController alloc] initWithNibName:@"Test4ViewController" bundle:nil];
    [self.navigationController pushViewController:test4ViewController animated:YES];
}

似乎 test3ViewController 不在导航流中，如何在插入视图上推送新视图？

Answer 1

test3ViewController 从未添加到 navigationController 的堆栈中。如果要推送 test4ViewController，则必须从 test2ViewController 执行，或者使用 UINavigationController 的 setViewControlers:animated: 方法将 test3ViewController 添加到堆栈中：

NSMutableArray *array = [NSMutableArray arrayWithArray:test2ViewController.navigationController.viewControllers];
[array addObject:test3ViewController];
[test2ViewController.navigationController setViewControllers:array animated:NO];
[test2ViewController.navigationController popToViewController:test3ViewController animated:NO];