Question

I have a UITableViewController and DetailViewController that pops up when concrete row is selected. The problem is the tableView does not call “didRotateFromInterfaceOrientation” method when rotation is did in DetailViewController. It’s logical, however I need to reload a table if orientation has changed.

I’m trying this code but it doesn’t work:

- (void)viewWillAppear:(BOOL)animated{
  [super viewWillAppear:animated];
  if (self.interfaceOrientation != [UIDevice currentDevice].orientation){
    [self handleTableViewRotation];
  }
}

I’m assuming there should be some property that holds orientation of tableView that is independent of current device orientation property…

Answer 1

Maybe the most elegant solution is coding a protocol. Whenever your DetailViewController enters in a rotation callback, call reloadData method of your tableView.

Or… you can continue that way. In that case you have to store the tableViewController’s last orientation as a instance var and compare it to the current. After that, remember setting the new orientation

EDIT: First declare a new Protocol.

@protocol RotationDelegate

    - (void) didRotate;

@end

In your DetailViewController.h:

#import RotationDelegate.h

@interface DetailViewController : UIViewController {
    id <RotationDelegate> rotationDelegate;
}

@property (nonatomic, assign) id <RotationDelegate> rotationDelegate;

In DetailViewController.m:

@synthesize rotationDelegate;


-(void) didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{

    [rotationDelegate didRotate];

}

Now your ViewController that contains the tableView:

@interface RootViewController : UITableViewController <RotationDelegate> {
    ...
}

And finally implement didRotate method and call [yourTableView reloadData] inside. Remember that you have to set the rotation delegate after init your DetailViewController.