Beispiel #1
0
        // This method is invoked when the application has loaded and is ready to run. In this
        // method you should instantiate the window, load the UI into it and then make the window
        // visible.
        public override bool FinishedLaunching(UIApplication app, NSDictionary options)
        {
            window = new UIWindow(UIScreen.MainScreen.Bounds);

            // create and initialize a UICollectionViewFlowLayout
            layout = new UICollectionViewFlowLayout()
            {
                HeaderReferenceSize = new SizeF(UIScreen.MainScreen.Bounds.Width, 50),
                SectionInset        = new UIEdgeInsets(10, 5, 10, 5),

                MinimumInteritemSpacing = 5,
                MinimumLineSpacing      = 5,
                ItemSize = new System.Drawing.SizeF(100, 100)
            };

            // create a CollectionViewController (which is a UICollectionViewController) with a layout
            viewController = new CollectionViewController(layout);


            // toggle the layout in response to a swipe left
            swipeLeft = new UISwipeGestureRecognizer(g => {
                if (customLayout == null)
                {
                    // create and initialize a CustomLayout
                    customLayout = new CustomLayout(viewController.Speakers.Count)
                    {
                        ItemSize = new SizeF(100, 100)
                    };
                }

                if (viewController.CollectionView.CollectionViewLayout is UICollectionViewFlowLayout)
                {
                    // switch to a custom layout
                    viewController.CollectionView.SetCollectionViewLayout(customLayout, true);
                }
                else
                {
                    // invalidate the flow layout in case the orientation changed
                    layout.InvalidateLayout();

                    // switch to a flow layout
                    viewController.CollectionView.SetCollectionViewLayout(layout, true);

                    // scroll to the top
                    viewController.CollectionView.SetContentOffset(new PointF(0, 0), false);
                }
            })
            {
                Direction = UISwipeGestureRecognizerDirection.Left
            };

            // add the gesture recognizer to the UICollectionView
            viewController.CollectionView.AddGestureRecognizer(swipeLeft);


            window.RootViewController = viewController;
            window.MakeKeyAndVisible();

            return(true);
        }
		// This method is invoked when the application has loaded and is ready to run. In this
		// method you should instantiate the window, load the UI into it and then make the window
		// visible.
		public override bool FinishedLaunching (UIApplication app, NSDictionary options)
		{
			window = new UIWindow (UIScreen.MainScreen.Bounds);

			// create and initialize a UICollectionViewFlowLayout
			layout = new UICollectionViewFlowLayout () {

				HeaderReferenceSize = new SizeF (UIScreen.MainScreen.Bounds.Width, 50),
				SectionInset = new UIEdgeInsets (10,5,10,5),

				MinimumInteritemSpacing = 5,
				MinimumLineSpacing = 5,
				ItemSize = new System.Drawing.SizeF (100, 100)
			};

			// create a CollectionViewController (which is a UICollectionViewController) with a layout
			viewController = new CollectionViewController (layout);

			//TODO: Step 4b: uncomment to implement a left swipe gesture to switch between Collection View Layouts

			// toggle the layout in response to a swipe left
			swipeLeft = new UISwipeGestureRecognizer (g => {

				if (customLayout == null) {

					// create and initialize a CustomLayout
					customLayout = new CustomLayout (viewController.Speakers.Count){
						ItemSize = new SizeF (100, 100)
					};
				}

				if (viewController.CollectionView.CollectionViewLayout is UICollectionViewFlowLayout) {

					// switch to a custom layout
					viewController.CollectionView.SetCollectionViewLayout (customLayout, true);
				} else {

					// invalidate the flow layout in case the orientation changed
					layout.InvalidateLayout();

					// switch to a flow layout
					viewController.CollectionView.SetCollectionViewLayout (layout, true);

					// scroll to the top
					viewController.CollectionView.SetContentOffset(new PointF(0,0), false);
				}
			}){
				Direction = UISwipeGestureRecognizerDirection.Left
			};
			// add the gesture recognizer to the UICollectionView
			viewController.CollectionView.AddGestureRecognizer (swipeLeft);


			window.RootViewController = viewController;
			window.MakeKeyAndVisible ();

			return true;
		}