ios - 无法将用户从第二个 View Controller 移动到初始 View Controller

Question

我使用 SWRevealViewController 创建滑动菜单。

当用户按下初始 View Controller 的条形按钮时，必须打开新的第二个 View Controller 。当从第二个 View Controller 按下栏按钮时，用户必须再次导航回初始 View Controller 。

我使用以下代码将使用的从第二个 View Controller 移动到初始 View Controller 。

 SWRevealViewController *revealViewController = self.revealViewController;
    if ( revealViewController )
    {
        [self.sidebarButton setTarget: self.revealViewController];
        [self.sidebarButton setAction: @selector( goBack )];
        [self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
    }

但我收到以下错误消息，

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[SWRevealViewController goBack]: unrecognized selector sent to instance

以下是我的 goBack 方法

- (IBAction)back:(id)sender {

    [self.navigationController popToRootViewControllerAnimated:YES];

} 

Answer 1

实际上你创建了按钮和 Action ，但是你忘了实现goBack的方法，

-(Void) goBack
{
// do something
}

更新2

不在 goBack 中它是 goBack:

  - (IBAction)back:(id)sender {

[self.navigationController popToRootViewControllerAnimated:YES];

} 

完整答案是

SWRevealViewController *revealViewController = self.revealViewController;
if ( revealViewController )
{
    [self.sidebarButton setTarget: self.revealViewController];
    [self.sidebarButton setAction: @selector( goBack: )];
    [self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
}


  - (IBAction)back:(id)sender {

[self.navigationController popToRootViewControllerAnimated:YES];

} 

编辑答案

SWRevealViewController *revealViewController = self.revealViewController;
if ( revealViewController )
{
    [self.sidebarButton setTarget: self.revealViewController];
    [self.sidebarButton setAction: @selector( revealToggle: )];
    [self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
}