iOS: Returning to main XIB from secondary XIB

问题

I am trying to change a back to the main xib after I was on a second XIB. This is the current code I am using:

NSArray *nibObjs = [[NSBundle mainBundle] loadNibNamed:@"Results1" owner:self options:nil];
    UIView *aView = [nibObjs objectAtIndex:0];
    self.view = aView;

I have a button on the second xib that returns back to the originating xib. When I hit the button the app crashes. I am not sure why because it does not display an error - it just crashes. Here is the code on the button on the second xib or "Results1" xib file:

-(IBAction)Button100:(id)sender
{
NSArray *nibObjs = [[NSBundle mainBundle] loadNibNamed:@"main" owner:self options:nil];
UIView *aView = [nibObjs objectAtIndex:0];
self.view = aView;
}

Not sure what I am doing wrong.

回答1:

Add as subviews instead, so you can then just 'pop' the Results1 view off:

// in your .h
@property (strong) UIView *aView;

// replace your provided code with this
NSArray *nibObjs = [[NSBundle mainBundle] loadNibNamed:@"Results1" owner:self options:nil];
self.aView = [nibObjs objectAtIndex:0];
[self.view addSubview:self.aView];

- (IBAction)Button100:(id)sender
{
    [self.aView removeFromSuperview];
    self.aView = nil;
}

Just a suggestion — if you want them to 'swap', consider using the class method transitionFromView:toView:duration:options:completion: in UIView.

回答2:

The problem is I needed to turn off Automatic Reference Counting.

来源：https://stackoverflow.com/questions/11893963/ios-returning-to-main-xib-from-secondary-xib