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iosiphoneexc-bad-accessnib

Can't navigate to nib iphone sdk

This is my code to navigate to another nib, 

  MaintenanceViewController *maintenance = [[MaintenanceViewController alloc] initWithNibName:@"MaintenanceViewController" bundle:nil];
  CGRect theFrame = maintenance.view.frame;
  theFrame.origin = CGPointMake(self.view.frame.size.width, 0);
  maintenance.view.frame = theFrame;
  theFrame.origin = CGPointMake(0,0);
  [UIView beginAnimations:nil context:nil];
  [UIView setAnimationDuration:0.6f];
  maintenance.view.frame = theFrame;
  [UIView commitAnimations];
  [self.view addSubview:maintenance.view];

note that I am not using navigation controller and also I dont want to as my app is not based on navigation.

When This method is called on second line i.e. getting frame(theframe) the app got crashed with error Exec_bad_access code=2 address = 0xbf7ffffc.

So nib couldn't loaded.

Solution

  • First thing first; your app is crashing because you are having a call on a nill variable: maintenance. You need to ensure that the loading of your nib file is happening correctly.

    There are different reasons this is not happening; check:

    1. You are using the correct name for the xib and the file exist.
    2. You have defined correctly the xib file's "File owner": your view controller.

    Second thing; i think what you want is to present modally your second view controller which can be accomplished by making a call to the presenting view controller with the presentViewController:animated:completion: method.