Exemplo n.º 1
0
        public void Dispose()
        {
            if (_disposed)
            {
                return;
            }

            _disposed = true;

            foreach (var kvp in _gestureRecognizers)
            {
                _handler.RemoveGestureRecognizer(kvp.Value);
#if __MOBILE__
                kvp.Value.ShouldReceiveTouch = null;
#endif
                kvp.Value.Dispose();
            }

            _gestureRecognizers.Clear();

            if (ElementGestureRecognizers != null)
            {
                ElementGestureRecognizers.CollectionChanged -= _collectionChangedHandler;
            }

            _handler = null;
        }
Exemplo n.º 2
0
        public void Dispose()
        {
            if (_disposed)
            {
                return;
            }

            _disposed = true;

            foreach (var kvp in _gestureRecognizers)
            {
                _handler.RemoveGestureRecognizer(kvp.Value);
#if __MOBILE__
                kvp.Value.ShouldReceiveTouch = null;
#endif
                kvp.Value.Dispose();
            }

            _gestureRecognizers.Clear();

            Disconnect();

            _handler = null;
        }
Exemplo n.º 3
0
        public void Dispose()
        {
            if (_disposed)
            {
                return;
            }

            _disposed = true;

            foreach (var kvp in _gestureRecognizers)
            {
                _handler.RemoveGestureRecognizer(kvp.Value);
                kvp.Value.Dispose();
            }

            _gestureRecognizers.Clear();

            if (ElementGestureRecognizers != null)
            {
                ElementGestureRecognizers.CollectionChanged -= _collectionChangedHandler;
            }

            _handler = null;
        }
Exemplo n.º 4
0
        public static void DisposeEx(this UIView view, bool disposeView = true)
        {
            try {
                var viewDescription = string.Empty;

                var disconnectFromSuperView  = true;
                var disposeSubviews          = true;
                var removeGestureRecognizers = false; // WARNING: enable at your own risk, may causes crashes
                var removeLayerAnimations    = true;
                var associatedViewsToDispose = new List <UIView>();
                var otherDisposables         = new List <IDisposable>();

                if (view is UIActivityIndicatorView)
                {
                    var aiv = (UIActivityIndicatorView)view;
                    if (aiv.IsAnimating)
                    {
                        aiv.StopAnimating();
                    }
                }
                else if (view is UITableView)
                {
                    var tableView = (UITableView)view;

                    if (tableView.DataSource != null)
                    {
                        otherDisposables.Add(tableView.DataSource);
                    }
                    if (tableView.BackgroundView != null)
                    {
                        associatedViewsToDispose.Add(tableView.BackgroundView);
                    }

                    tableView.Source         = null;
                    tableView.Delegate       = null;
                    tableView.DataSource     = null;
                    tableView.WeakDelegate   = null;
                    tableView.WeakDataSource = null;
                    associatedViewsToDispose.AddRange(tableView.VisibleCells ?? new UITableViewCell[0]);
                }
                else if (view is UITableViewCell)
                {
                    var tableViewCell = (UITableViewCell)view;
                    disposeView             = false;
                    disconnectFromSuperView = false;
                    if (tableViewCell.ImageView != null)
                    {
                        associatedViewsToDispose.Add(tableViewCell.ImageView);
                    }
                }
                else if (view is UICollectionView)
                {
                    var collectionView = (UICollectionView)view;
                    disposeView = false;
                    if (collectionView.DataSource != null)
                    {
                        otherDisposables.Add(collectionView.DataSource);
                    }

                    associatedViewsToDispose.Add(collectionView.BackgroundView);
                    //associatedViewsToDispose.AddRange(collectionView.VisibleCells ?? new UICollectionViewCell[0]);
                    collectionView.Source         = null;
                    collectionView.Delegate       = null;
                    collectionView.DataSource     = null;
                    collectionView.WeakDelegate   = null;
                    collectionView.WeakDataSource = null;
                }
                else if (view is UICollectionViewCell)
                {
                    var collectionViewCell = (UICollectionViewCell)view;
                    disposeView             = false;
                    disconnectFromSuperView = false;
                    if (collectionViewCell.BackgroundView != null)
                    {
                        associatedViewsToDispose.Add(collectionViewCell.BackgroundView);
                    }
                }
                else if (view is UIWebView)
                {
                    var webView = (UIWebView)view;
                    if (webView.IsLoading)
                    {
                        webView.StopLoading();
                    }
                    webView.LoadHtmlString(string.Empty, null); // clear display
                    webView.Delegate     = null;
                    webView.WeakDelegate = null;
                }
                else if (view is UIImageView)
                {
                    var imageView = (UIImageView)view;
                    if (imageView.Image != null)
                    {
                        otherDisposables.Add(imageView.Image);
                        imageView.Image = null;
                    }
                }

                var gestures = view.GestureRecognizers;
                if (removeGestureRecognizers && gestures != null)
                {
                    foreach (var gr in gestures)
                    {
                        view.RemoveGestureRecognizer(gr);
                        gr.Dispose();
                    }
                }

                if (removeLayerAnimations && view.Layer != null)
                {
                    view.Layer.RemoveAllAnimations();
                }

                if (disconnectFromSuperView && view.Superview != null)
                {
                    view.RemoveFromSuperview();
                }

                var constraints = view.Constraints;
                if (constraints != null && constraints.Any() && constraints.All(c => c.Handle != IntPtr.Zero))
                {
                    view.RemoveConstraints(constraints);
                    foreach (var constraint in constraints)
                    {
                        constraint.Dispose();
                    }
                }

                foreach (var otherDisposable in otherDisposables)
                {
                    otherDisposable.Dispose();
                }

                foreach (var otherView in associatedViewsToDispose)
                {
                    otherView.DisposeEx();
                }

                var subViews = view.Subviews;
                if (disposeSubviews && subViews != null)
                {
                    foreach (var s in subViews)
                    {
                        s.DisposeEx();
                    }
                }

                if (disposeView)
                {
                    if (view.Handle != IntPtr.Zero)
                    {
                        view.Dispose();
                    }
                }
            } catch (Exception error) {
                Console.Error.WriteLine(error);
            }
        }