CODEWITHSUNDEEP
iosxamarin.iosorientation
Hardik Shah
Hardik Shah

Reputation: 179

Xamarin iOS8+ : How to handle the rotation?

I am developing an iPad app in Xamarin and we have to provide orientation support.

In my scenario, I have to add multiple views in a scroll view which I am managing by enabling paging.

Now the issue is with orientation. While the device is rotated I have update the content size of scroll view.

In Xcode I am able to manage the thing using below function:

-(void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:    (id<UIViewControllerTransitionCoordinator>)coordinator
    {
        // before rotation 
        [coordinator animateAlongsideTransition:^(id  _Nonnull context) {
            // during rotation: update our image view's bounds and centre
        } completion:^(id  _Nonnull context) {
           // after rotation
        }];
    }

So can anyone guide me how can I use this function in Xamarin too? I want to use the completion block.

Upvotes: 1

Views: 818

Answers (1)

BytesGuy
BytesGuy

Reputation: 4127

In Xamarin.iOS most of the iOS SDK APIs are bound to similarly named methods in C#.

So for viewWillTransitionToSize you would use the following in your view controller:

public override void ViewWillTransitionToSize(CoreGraphics.CGSize toSize, IUIViewControllerTransitionCoordinator coordinator) 
{
    coordinator.AnimateAlongsideTransition((IUIViewControllerTransitionCoordinatorContext obj) => {
        // Define any animations you want to perform (equivilent to willRotateToInterfaceOrientation)
    }, (IUIViewControllerTransitionCoordinatorContext obj) => {
        // Completition executed after transistion finishes (equivilent to didRotateFromInterfaceOrientation)
    });

    base.ViewWillTransitionToSize(toSize, coordinator);
}

https://developer.xamarin.com/api/member/UIKit.UIViewController.ViewWillTransitionToSize/

Upvotes: 2

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