How to hide & unhide Master View Controller in SplitView Controller

Question

I have created a new split view based project in my XCode 4.2

Then in DetailViewController.m file i have add this method

- (BOOL)splitViewController: (UISplitViewController*)svc shouldHideViewController:(UIViewController *)vc inOrientation:(UIInterfaceOrientation)orientation  {   //This method is only available in iOS5       return NO; } 

Now by doing this i can able to show both left & right part of my splitview Controller at a time.

Now i have added a UIBarButtonItem in my DetailViewController Navigation bar and i want by using which i can hide & show my Master View both in Portrairt and Landscape Mode.

- (IBAction)hideUnhide:(id)sender  {  //How can hide & unhide  } 

How can i do this?

Answer 1

instead spv.delegate=nil; spv.delegate=self; 

you need to do next:

[spv willRotateToInterfaceOrientation:self.interfaceOrientation duration:0]; 

Answer 2

'setNeedsLayout' makes UISplitViewController to ask for "shouldHideViewController"

- (IBAction)hideUnhide:(id)sender  {     UISplitViewController* spv = ...;      self.hideMaster= !self.hideMaster;     [ spv.view setNeedsLayout ] }