How to dismiss parent view from View Controller in Tab Bar Controller?

Question

My app have a main screen ( mainView ). On mainView , I have a button. When user taps it, I use

[self presentViewController:libraryView animated:YES completion:nil]

to present another view ( libraryView ). Then, on libraryView , I use

[self.view addSubview:tabBarController.view]

to add a UITabBarController which has 2 View Controllers: featuredBooks and recentBooks

Everything works fine. But when I add a button to featureBooks to dissmiss the libraryView and return to mainView , the following methods don't work

[self dismissViewControllerAnimated: YES completion:nil]
[self.parentViewController dismissViewControllerAnimated: YES completion:nil]
[self.presentingViewController dismissViewControllerAnimated: YES completion:nil]

I know the reason: self refers to featureBooks 's view, not libraryView .

So, how do I refer to libraryView , dismiss it and return to mainView from a view controller ( featureBooks or recentBooks ) inside Tab Bar Controller?

Thank you very much.

Answer 1

Make mainView delegate object of libraryView... Then when you call the delegate method from libraryView, mainView will call in its code the method dismissViewcController.

So:

1)create into libraryView controller .h code:

@protocol LibraryViewDelegate

      - (void) LibraryViewDelegate_DismissButtonClicked;

@end

2)then create a property into mainView .h file:

@property(nonatomic, assign) NSObject<LibraryViewDelegate> *delegate;

and the following into the .m one

@synthesize delegate;

and assign mainView to this property after libraryView object creation and before you will present it

3)write the following code into the mainview .m file:

-(void)LibraryViewDelegate_DismissButtonClicked{
      //put here the code for dismissing mainView created modalViewController (libraryView)
}

4)then write the code that call:

[self.delegate LibraryViewDelegate_DismissButtonClicked];

into libraryView when you press the dismiss button