使用导航栏和后退按钮创建模态视图 [英] Create a modal view with navigation bar and back button

问题描述

我想用导航项创建一个模态视图（我的截图上的右视图），我希望它有一个'后退按钮'。我的应用程序是TabBar应用程序，我不希望此视图有一个标签栏，但我想加载一个类似于push类型的segue的前一个视图（我的屏幕截图上的左视图）。
我只能创建push segue以提供正确的导航回到左边的视图，如果它作为模态视图加载，NavigationBar& TabBar消失了。这有什么变通方法吗？
提前致谢！

I want to create a modal view with the navigation item (right view on my screenshot) and I want it to have a 'back button'. My app is TabBar application and I don't want this view to have a tab bar, but I want to load a previous view (left view on my screenshot) with a segue similar to the type "push". I can only create push segue to provide right navigation back to the view on the left, if it's loaded as a modal view, the NavigationBar & TabBar are gone. Any workarounds for this? Thanks in advance!

推荐答案

只需在新视图上放置一个带有条形按钮项目的导航栏。通过控制从条形按钮项拖动到视图控制器的.h，为条形按钮项创建操作。然后，您可以使用委托和协议方法告诉第一个控制器何时按下按钮并使用 [self dismissModalViewControllerAnimated：YES];

Just put a Navbar on the new view with a bar button item. Create an action for the bar button item by control dragging from the bar button item to the .h of the view controller. You can then use a delegate and protocol method to tell the first controller when the button has been pressed and have it use [self dismissModalViewControllerAnimated:YES];

所以在你的第二个视图中创建一个完成方法的协议，如下所示：

So in your second view create a protocol with a method done, like this:

@protocol SecondViewControllerDelegate <NSObject>

-(void) done;

@end

@interface SecondViewController : UIViewController {
    ...
    id delegate;
}

...

@property (nonatomic, assign) id<SecondViewControllerDelegate> delegate;

-(IBAction)done:(id)sender;  //this will be linked to your nav bar button.
@end

然后在你的行动中通过按钮调用：

then in your action from your button call this:

-(IBAction)done:(id)sender{
   [self.delegate done];
}

您的第一个视图控制器需要实现协议 < SecondViewControllerDelegate>

Your first view controller will need to implement the protocol <SecondViewControllerDelegate>

然后在您的第一个视图控制器中，将其设置为第二个视图控制器的委托，然后再进行segue。

then in your first view controller, set it up as a delegate for your second view controller before you segue.

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([[segue identifier] isEqualToString:@"Second View Modal Segue Identifier"])
    {
        SecondViewController *viewController = segue.destinationViewController;
        viewController.delegate = self;
    }
}

最后，抓住你代表的完成电话第一个视图控制器：

lastly, catch the done call from the delegate in your first view controller:

-(void) done
{
    [self dismissModalViewControllerAnimated:YES];
}

我就是这样做的。如果你没有很多协议和代表的经验，一开始可能会让人感到困惑，但它对我来说效果很好。

That's how I have done it. If you don't have a lot of experience with protocols and delegates it may seem confusing at first, but it has worked well for me.

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