推送viewController动画时UINavigationController上的子视图看起来不正确

Question

在我的UIViewController viewDidLoad中我有：

myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
...
myButton.frame = CGRectMake(0, 2, 40, 40);
[self.navigationController.navigationBar addSubview:myButton];

按钮显示就好了。不，我在堆栈上推送另一个viewcontroller：

 [self.navigationController pushViewController:vc animated:YES];

当然Button仍然显示，所以我尝试将它隐藏在viewWillDisappear中并在viewWillAppear中显示它，但转换看起来并不正确。即使用隐藏的电话交换超级电话的顺序也不合适。

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    myButton.hidden = YES;
}

- (void)viewWillAppear:(BOOL)animated {
    myButton.hidden = NO;
    [super viewWillAppear:animated];
}

如何才能让这种过渡看起来正确？谢谢。

Answer 1

不使用按钮作为子视图，而是使用类似下面的内容

UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithCustomView:YourCustomView];
self.navigationItem.rightBarButtonItem = barButton;