public override void PrepareForSegue(UIStoryboardSegue segue, NSObject sender)
{
if (!(segue.DestinationViewController is AssetGridViewController) || !(sender is UITableViewCell))
{
return;
}
var assetGridViewController = (AssetGridViewController)segue.DestinationViewController;
var cell = (UITableViewCell)sender;
// Set the title of the AssetGridViewController.
assetGridViewController.Title = cell.TextLabel.Text;
// Get the PHFetchResult for the selected section.
NSIndexPath indexPath = TableView.IndexPathForCell(cell);
PHFetchResult fetchResult = sectionFetchResults [indexPath.Section];
if (segue.Identifier == allPhotosSegue)
{
assetGridViewController.AssetsFetchResults = fetchResult;
}
else if (segue.Identifier == collectionSegue)
{
// Get the PHAssetCollection for the selected row.
var collection = fetchResult [indexPath.Row] as PHAssetCollection;
if (collection == null)
{
return;
}
var assetsFetchResult = PHAsset.FetchAssets(collection, null);
assetGridViewController.AssetsFetchResults = assetsFetchResult;
assetGridViewController.AssetCollection = collection;
}
}
private PHFetchResult AdjustAssets(PHFetchResult assets, PHFetchResultChangeDetails changes)
{
if (assets == null)
{
return(null);
}
var before = assets;
assets = changes.FetchResultAfterChanges;
foreach (var asset in before.OfType <PHAsset>())
{
if (!assets.Contains(asset))
{
AllAssets.Remove(asset);
}
}
foreach (var asset in assets.OfType <PHAsset>().OrderBy(a => a.CreationDate.SecondsSinceReferenceDate))
{
if (!AllAssets.Contains(asset))
{
AllAssets.Insert(0, asset);
}
}
return(assets);
}
public override void AwakeFromNib()
{
// Create a PHFetchResult object for each section in the table view.
var allPhotosOptions = new PHFetchOptions();
allPhotosOptions.SortDescriptors = new [] {
new NSSortDescriptor("creationDate", true)
};
PHFetchResult allPhotos = PHAsset.FetchAssets(allPhotosOptions);
PHFetchResult smartAlbums = PHAssetCollection.FetchAssetCollections(PHAssetCollectionType.SmartAlbum,
PHAssetCollectionSubtype.AlbumRegular, null);
PHFetchResult topLevelUserCollections = PHCollection.FetchTopLevelUserCollections(null);
// Store the PHFetchResult objects and localized titles for each section.
sectionFetchResults = new [] {
allPhotos, smartAlbums, topLevelUserCollections
};
sectionLocalizedTitles = new [] {
string.Empty, "Smart Albums", "Albums", string.Empty
};
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
}
private void LastTakenPhotoFunction()
{
if (!UIImagePickerController.IsSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary))
{
alertView = new UIAlertView("SnagR Upload Photos APP", "Sorry, you cannot select pictures with your device",
new UIAlertViewDelegate(), "OK");
alertView.Show();
return;
}
//imagePicker.SourceType = UIImagePickerControllerSourceType.PhotoLibrary;
//ALAssetsLibrary library = new ALAssetsLibrary();
PHFetchOptions fetchOptions = new PHFetchOptions();
fetchOptions.SortDescriptors = new NSSortDescriptor[] { new NSSortDescriptor("creationDate", false) };
PHFetchResult fetchResult = PHAsset.FetchAssets(PHAssetMediaType.Image, fetchOptions);
PHAsset lastAsset = (Photos.PHAsset)fetchResult.LastObject;
PHImageRequestOptions option = new PHImageRequestOptions();
option.ResizeMode = PHImageRequestOptionsResizeMode.Exact;
PHImageManager.DefaultManager.RequestImageData(lastAsset, option, (data, dataUti, orientation, info) => nsSelectedImage = data);
//PHImageManager.DefaultManager.RequestImageForAsset(lastAsset, new CGSize(100, 100), PHImageContentMode.AspectFill, options:option,(UIImage result, NSDictionary info) => {selectedImage = result});
selectedImage = UIImage.LoadFromData(nsSelectedImage);
TestImagePlace.Image = selectedImage;
//imagePicker.AssetsLibrary
UploadProcess();
}
public void PhotoLibraryDidChange(PHChange changeInstance)
{
// Change notifications may be made on a background queue. Re-dispatch to the
// main queue before acting on the change as we'll be updating the UI.
DispatchQueue.MainQueue.DispatchSync(() =>
{
// Check each of the three top-level fetches for changes.
// Update the cached fetch result.
var changeDetails = changeInstance.GetFetchResultChangeDetails(allPhotos);
if (changeDetails != null)
{
// Update the cached fetch result.
allPhotos = changeDetails.FetchResultAfterChanges;
// (The table row for this one doesn't need updating, it always says "All Photos".)
}
// Update the cached fetch results, and reload the table sections to match.
changeDetails = changeInstance.GetFetchResultChangeDetails(smartAlbums);
if (changeDetails != null)
{
smartAlbums = changeDetails.FetchResultAfterChanges;
TableView.ReloadSections(NSIndexSet.FromIndex((int)Section.SmartAlbums), UITableViewRowAnimation.Automatic);
}
changeDetails = changeInstance.GetFetchResultChangeDetails(userCollections);
if (changeDetails != null)
{
userCollections = changeDetails.FetchResultAfterChanges;
TableView.ReloadSections(NSIndexSet.FromIndex((int)Section.UserCollections), UITableViewRowAnimation.Automatic);
}
});
}
// TODO MAKE ASYNC
public List <ImageMediaContent> loadImages()
{
List <ImageMediaContent> imageMedia = new List <ImageMediaContent>();
PHFetchResult fetchResult = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
nint index = 0;
foreach (PHAsset phAsset in fetchResult)
{
String filePath = "";
UIImage image;
imageManager.RequestImageForAsset((PHAsset)imageFetchResults[index], new SizeF(160, 160),
PHImageContentMode.AspectFill, new PHImageRequestOptions(), (img, info) =>
{
image = img;
});
index++;
phAsset.RequestContentEditingInput(new PHContentEditingInputRequestOptions(), (input, v) =>
{
filePath = input.FullSizeImageUrl.Path;
});
imageMedia.Add(new ImageMediaContent(filePath));
}
return(imageMedia);
}
void ImageEditor_ImageSaved(object sender, ImageSavedEventArgs e)
{
string[] str = e.Location.Split('/');
PHFetchResult assetResult = PHAsset.FetchAssetsUsingLocalIdentifiers(str, null);
PHAsset asset = assetResult.firstObject as PHAsset;
Stream stream = null;
PHImageManager.DefaultManager.RequestImageData(asset, null, async(data, dataUti, orientation, info) =>
{
UIImage newImage = new UIImage(data);
var items = new NSObject[] { newImage };
var activityController = new UIActivityViewController(items, null);
NSString[] excludedActivityTypes = null;
if (excludedActivityTypes != null && excludedActivityTypes.Length > 0)
{
activityController.ExcludedActivityTypes = excludedActivityTypes;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
if (activityController.PopoverPresentationController != null)
{
activityController.PopoverPresentationController.SourceView = presentController.View;
}
}
await presentController.PresentViewControllerAsync(activityController, true);
});
}
/// <summary>
/// MUST BE CALLED FROM THE UI THREAD
/// </summary>
/// <param name="filePath"></param>
/// <param name="title"></param>
/// <param name="message"></param>
/// <returns></returns>
public async Task Show(string title, string message, string filePath)
{
string[] str = filePath.Split('/');
PHFetchResult assetResult = PHAsset.FetchAssetsUsingLocalIdentifiers(str, null);
PHAsset asset = assetResult.firstObject as PHAsset;
Stream stream = null;
PHImageManager.DefaultManager.RequestImageData(asset, null, async(data, dataUti, orientation, info) =>
{
UIImage newImage = new UIImage(data);
var items = new NSObject[] { newImage };
var activityController = new UIActivityViewController(items, null);
var vc = GetVisibleViewController();
NSString[] excludedActivityTypes = null;
if (excludedActivityTypes != null && excludedActivityTypes.Length > 0)
{
activityController.ExcludedActivityTypes = excludedActivityTypes;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
if (activityController.PopoverPresentationController != null)
{
activityController.PopoverPresentationController.SourceView = vc.View;
}
}
await vc.PresentViewControllerAsync(activityController, true);
});
}
/// <summary>
/// MUST BE CALLED FROM THE UI THREAD
/// </summary>
/// <param name="filePath"></param>
/// <param name="title"></param>
/// <param name="message"></param>
/// <returns></returns>
public void Show(string title, string message, string filePath)
{
string[] str = filePath.Split('/');
PHFetchResult assetResult = PHAsset.FetchAssetsUsingLocalIdentifiers(str, null);
PHAsset asset = assetResult.firstObject as PHAsset;
PHImageManager.DefaultManager.RequestImageData(asset, null, HandlePHImageDataHandler);
}
public iOSPhotoLibraryChangeObserver(iOSImageMetadataProbe probe, DispatchQueue dispatchQueue)
{
_probe = probe;
_dispatchQueue = dispatchQueue;
_imageFetchResult = PHAsset.FetchAssets(PHAssetMediaType.Image, new PHFetchOptions());
_videoFetchResult = PHAsset.FetchAssets(PHAssetMediaType.Video, new PHFetchOptions());
}
/// <summary>
/// Photo Library change observer. Triggers when changes are made to the photo library such as
/// new pictures were added or pictures were removed
/// </summary>
/// <param name="changeInstance"><see cref="PHChange"/> with changes</param>
public void PhotoLibraryDidChange(PHChange changeInstance)
{
DispatchQueue.MainQueue.DispatchAsync(() =>
{
_images = TryAdjustAssets(_images, changeInstance);
_videos = TryAdjustAssets(_videos, changeInstance);
});
}
public PhotoCollectionViewSource()
{
PHFetchOptions options = new PHFetchOptions
{
SortDescriptors = new[] { new NSSortDescriptor("creationDate", false) },
};
_fetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, options);
_m = new PHImageManager();
}
public PhotosViewController(UICollectionViewLayout layout) : base(layout)
{
Title = "All Photos";
imageMgr = new PHImageManager();
fetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
observer = new PhotoLibraryObserver(this);
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(observer);
}
public override void ViewDidLoad ()
{
base.ViewDidLoad();
ScreenName = $"{GAIKeys.ScreenNames.BugDetails} ({TrackerService.Shared.CurrentTracker})";
thumbSize = new CGSize (125.0 * UIScreen.MainScreen.Scale, 125.0 * UIScreen.MainScreen.Scale);
options.SortDescriptors = new [] { new NSSortDescriptor ("modificationDate", false) };
assetsFetchResult = PHAsset.FetchAssetsUsingLocalIdentifiers(TrapState.Shared.LocalIdentifiersForActiveSnapshots, options);
}
public PhotosViewController(UICollectionViewLayout layout)
: base(layout)
{
Title = "All Photos";
imageMgr = new PHImageManager ();
fetchResults = PHAsset.FetchAssets (PHAssetMediaType.Image, null);
observer = new PhotoLibraryObserver (this);
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver (observer);
}
void GetPhotos()
{
if (PHPhotoLibrary.AuthorizationStatus == PHAuthorizationStatus.Authorized)
{
imageManager = PHImageManager.DefaultManager;
PHFetchOptions options = new PHFetchOptions {
SortDescriptors = new [] { new NSSortDescriptor("creationDate", false) }
};
images = PHAsset.FetchAssets(PHAssetMediaType.Image, options);
CollectionView.ReloadData();
}
}
public UILatestPhotosOverlayView(CGRect frame) : base(frame, new UIHorizontalScrollLayout())
{
DataSource = this;
RegisterClassForCell(typeof(UIImageViewCell), imageViewCellId);
fetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
manager = new PHImageManager();
var tapRecognizer = new UITapGestureRecognizer(() => Console.Write("test"));
AddGestureRecognizer(tapRecognizer);
TranslatesAutoresizingMaskIntoConstraints = false;
BackgroundColor = UIColor.Clear;
}
public BtImageCollectionViewController (IntPtr handle) : base(handle)
{
fetchOptions.SortDescriptors = new [] { new NSSortDescriptor ("modificationDate", false) };
// delay requesting permission for Test Cloud runs so it doesn't crash
Task.Run(async() => {
#if UITEST
await Task.Delay(3000);
#endif
await TrapState.Shared.GetAlbumLocalIdentifier();
assetsFetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, fetchOptions);
});
}
public async Task GetAllThumbnails(List <ItemModel> items)
{
await Task.Run(() =>
{
PHFetchResult fetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
foreach (PHAsset asset in fetchResults)
{
items.Add(new ItemModel {
ThumbLoader = new ThumbLoader_iOS(asset), ModificationDate = asset.ModificationDate.ToDateTime()
});
}
});
}
public override void ViewWillAppear (bool animated)
{
base.ViewWillAppear(animated);
NavigationController.HidesBarsOnTap = false;
if (!IsMovingToParentViewController) {
var state = TrackerService.Shared.CurrentTracker.TrackerState;
TableView.ReloadSections(NSIndexSet.FromIndex(state.ActiveBugDetail), UITableViewRowAnimation.Automatic);
}
assetsFetchResult = PHAsset.FetchAssetsUsingLocalIdentifiers(TrapState.Shared.LocalIdentifiersForActiveSnapshots, options);
reloadEmbeddedImageCollectinView();
}
private void LoadAssetsFromLibrary()
{
var assetsOptions = new PHFetchOptions();
// include all source types
assetsOptions.IncludeAssetSourceTypes = PHAssetSourceType.CloudShared | PHAssetSourceType.UserLibrary | PHAssetSourceType.iTunesSynced;
// show most recent first
assetsOptions.SortDescriptors = new NSSortDescriptor[] { new NSSortDescriptor("modificationDate", false) };
// fecth videos
this.assets = PHAsset.FetchAssets(PHAssetMediaType.Video, assetsOptions);
// setup collection view
this.RecalculateItemSize();
this.CollectionView?.ReloadData();
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
NavigationItem.RightBarButtonItem = new UIBarButtonItem (UIBarButtonSystemItem.Add, AddAlbum);
// Create a PHFetchResult object for each section in the table view.
var allPhotosOptions = new PHFetchOptions {
SortDescriptors = new NSSortDescriptor [] { new NSSortDescriptor("creationDate", true) },
};
allPhotos = PHAsset.FetchAssets (allPhotosOptions);
smartAlbums = PHAssetCollection.FetchAssetCollections (PHAssetCollectionType.SmartAlbum, PHAssetCollectionSubtype.AlbumRegular, null);
userCollections = PHCollection.FetchTopLevelUserCollections (null);
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
NavigationItem.RightBarButtonItem = new UIBarButtonItem(UIBarButtonSystemItem.Add, AddAlbum);
// Create a PHFetchResult object for each section in the table view.
var allPhotosOptions = new PHFetchOptions {
SortDescriptors = new NSSortDescriptor [] { new NSSortDescriptor("creationDate", true) },
};
allPhotos = PHAsset.FetchAssets(allPhotosOptions);
smartAlbums = PHAssetCollection.FetchAssetCollections(PHAssetCollectionType.SmartAlbum, PHAssetCollectionSubtype.AlbumRegular, null);
userCollections = PHCollection.FetchTopLevelUserCollections(null);
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
}
public override nint RowsInSection(UITableView tableView, nint section)
{
nint numberOfRows;
if (section == 0)
{
// The "All Photos" section only ever has a single row.
numberOfRows = 1;
}
else
{
PHFetchResult fetchResult = sectionFetchResults[section];
numberOfRows = fetchResult.Count;
}
return(numberOfRows);
}
partial void BtnClick(UIKit.UIButton sender)
{
PHFetchResult fetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
for (int i = 0; i < fetchResults.Count; i++)
{
//fetching Result
PHAsset phAsset = (PHAsset)fetchResults[i];
String fileName = (NSString)phAsset.ValueForKey((NSString)"filename");
PHImageManager.DefaultManager.RequestImageData(phAsset, null, (data, dataUti, orientation, info) =>
{
var path = (info?[(NSString)@"PHImageFileURLKey"] as NSUrl).FilePathUrl.Path;
//Stream stream = System.IO.OpenRead((String)path);
Stream stream = new FileStream(path, FileMode.Open, FileAccess.Read);
});
}
}
private PHFetchResult TryAdjustAssets(PHFetchResult assets, PHChange changeInstance)
{
if (assets == null)
{
return(null);
}
if (changeInstance == null)
{
return(assets);
}
var collectionChanges = changeInstance.GetFetchResultChangeDetails(assets);
if (collectionChanges == null)
{
return(assets);
}
return(AdjustAssets(assets, collectionChanges));
}
public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
{
UITableViewCell cell;
if (indexPath.Section == 0)
{
cell = TableView.DequeueReusableCell(allPhotosReuseIdentifier, indexPath);
cell.TextLabel.Text = "All Photos";
}
else
{
PHFetchResult fetchResult = sectionFetchResults [indexPath.Section];
var collections = fetchResult.Cast <PHCollection> ().ToArray();
var collection = collections [indexPath.Row];
cell = TableView.DequeueReusableCell(collectionCellReuseIdentifier, indexPath);
cell.TextLabel.Text = collection.LocalizedTitle;
}
return(cell);
}
public void LoadSampleStream(string filename, SerializationModel model)
{
try
{
string[] str = filename.Split('/');
PHFetchResult assetResult = PHAsset.FetchAssetsUsingLocalIdentifiers(str, null);
PHAsset asset = assetResult.firstObject as PHAsset;
Stream stream = new MemoryStream();
PHImageManager.DefaultManager.RequestImageData(asset, null, (data, dataUti,
orientation, info) =>
{
byte[] byteArray = data.ToArray();
Stream streamm = new MemoryStream(byteArray);
dictionary.Add(filename, streamm);
model.Location = filename;
});
}
catch (Exception)
{
}
}
public override void PhotoLibraryDidChange(PHChange changeInstance)
{
PHFetchResultChangeDetails imageDetails = changeInstance.GetFetchResultChangeDetails(_imageFetchResult);
PHFetchResultChangeDetails videoDetails = changeInstance.GetFetchResultChangeDetails(_videoFetchResult);
List <PHObject> insertedObjects = new List <PHObject>();
if (imageDetails != null && imageDetails.InsertedObjects.Any())
{
insertedObjects.AddRange(imageDetails.InsertedObjects);
_imageFetchResult = imageDetails.FetchResultAfterChanges;
}
if (videoDetails != null && videoDetails.InsertedObjects.Any())
{
insertedObjects.AddRange(videoDetails.InsertedObjects);
_videoFetchResult = videoDetails.FetchResultAfterChanges;
}
HandleImage(insertedObjects);
}
private void OnAuthorized()
{
DispatchQueue.MainQueue.DispatchAsync(() =>
{
_imageManager = new PHCachingImageManager();
var options = new PHFetchOptions
{
SortDescriptors = new[] { new NSSortDescriptor("creationDate", false) }
};
var assets = new List <PHAsset>();
if (_mediaTypes.HasFlag(MediaType.Image))
{
_images = PHAsset.FetchAssets(PHAssetMediaType.Image, options);
assets.AddRange(_images.OfType <PHAsset>());
}
if (_mediaTypes.HasFlag(MediaType.Video))
{
_videos = PHAsset.FetchAssets(PHAssetMediaType.Video, options);
assets.AddRange(_videos.OfType <PHAsset>());
}
foreach (var asset in assets.OrderByDescending(a => a.CreationDate.SecondsSinceReferenceDate))
{
AllAssets.Add(asset);
}
ShowFirstImage();
AllAssets.CollectionChanged += AssetsCollectionChanged;
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
});
}
public void PhotoLibraryDidChange(PHChange changeInstance)
{
Debug.WriteLine($"{this.GetType().Name}: PhotoLibraryDidChange");
// Call might come on any background queue. Re-dispatch to the main queue to handle it.
DispatchQueue.MainQueue.DispatchAsync(() => {
// check if there are changes to the assets (insertions, deletions, updates)
var collectionChanges = changeInstance.GetFetchResultChangeDetails(AssetsFetchResults);
if (collectionChanges != null)
{
var collectionView = CollectionView;
if (CollectionView == null)
{
return;
}
// get the new fetch result
AssetsFetchResults = collectionChanges.FetchResultAfterChanges;
if (!collectionChanges.HasIncrementalChanges || collectionChanges.HasMoves)
{
// we need to reload all if the incremental diffs are not available
collectionView.ReloadData();
}
else
{
// if we have incremental diffs, tell the collection view to animate insertions and deletions
collectionView.PerformBatchUpdates(() =>
{
var removedIndexes = collectionChanges.RemovedIndexes;
if (removedIndexes != null && removedIndexes.Count > 0)
{
collectionView.DeleteItems(GetIndexesWithSection(removedIndexes, 0));
}
if (collectionChanges.InsertedIndexes != null && collectionChanges.InsertedIndexes.Count > 0)
{
collectionView.InsertItems(GetIndexesWithSection(collectionChanges.InsertedIndexes, 0));
var changedIndexes = collectionChanges.ChangedIndexes;
if (changedIndexes != null && changedIndexes.Count > 0)
{
collectionView.ReloadItems(GetIndexesWithSection(changedIndexes, 0));
}
}
}, (x) => {
if (_picker.GridSortOrder == SortOrder.Ascending)
{
var item = collectionView.NumberOfItemsInSection(0) - 1;
if (item >= 0)
{
var path = NSIndexPath.FromItemSection(item, 0);
collectionView.ScrollToItem(path, UICollectionViewScrollPosition.Bottom, true);
}
}
else
{
var path = NSIndexPath.FromItemSection(0, 0);
collectionView.ScrollToItem(path, UICollectionViewScrollPosition.Top, true);
}
});
if (collectionChanges.InsertedIndexes != null && collectionChanges.InsertedIndexes.Count > 0)
{
if (_picker.ShowCameraButton && _picker.AutoSelectCameraImages)
{
foreach (var path in GetIndexesWithSection(collectionChanges.InsertedIndexes, 0))
{
ItemSelected(collectionView, path);
}
}
}
}
ResetCachedAssets();
}
});
}
public void Update(Action handler = null)
{
_fetchResult = PHAsset.FetchAssets(_assetList, FetchOptions(_mediaType));
handler?.Invoke();
}
void updateViewConfiguration (bool animate = true, bool reloadData = false, bool updateScreenName = true, bool showActivity = false)
{
if (GetItemsCount(CollectionView, 0) == 0 && !noImageView.IsDescendantOfView(View)) {
View.AddSubview(noImageView);
} else if (noImageView.IsDescendantOfView(View)) {
noImageView.RemoveFromSuperview();
}
if (updateScreenName) UpdateScreenName(Editing ? GAIKeys.ScreenNames.EditSnapshots : GAIKeys.ScreenNames.SelectSnapshot);
CollectionView.AllowsMultipleSelection = true;
var leftItem = selecting || Editing ? cancelButton : editButton;
var rightItem = showActivity ? activityButton : Editing ? trashButton : selecting ? doneButton : null;
if (NavigationItem.LeftBarButtonItem != leftItem) NavigationItem.SetLeftBarButtonItem(leftItem, animate);
if (NavigationItem.RightBarButtonItem != rightItem) NavigationItem.SetRightBarButtonItem(rightItem, animate);
if (reloadData) {
if (TrapState.Shared.InActionExtension) {
CollectionView.ReloadData();
} else {
Task.Run(async () => {
var oldCount = assetsFetchResults?.Count ?? 0;
await TrapState.Shared.GetAlbumLocalIdentifier();
PHPhotoLibrary.SharedPhotoLibrary.UnregisterChangeObserver(this);
assetsFetchResults = PHAsset.FetchAssets(PHAssetMediaType.Image, fetchOptions);
if ((assetsFetchResults?.Count ?? 0) > oldCount) InvokeOnMainThread(() => CollectionView.ReloadData());
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
});
}
}
}
public void PhotoLibraryDidChange (PHChange changeInstance)
{
// Call might come on any background queue. Re-dispatch to the main queue to handle it.
DispatchQueue.MainQueue.DispatchAsync (() => {
// check if there are changes to the assets (insertions, deletions, updates)
var collectionChanges = changeInstance.GetFetchResultChangeDetails(AssetsFetchResults);
if (collectionChanges != null) {
var collectionView = CollectionView;
if (collectionView == null)
{
return;
}
// get the new fetch result
AssetsFetchResults = collectionChanges.FetchResultAfterChanges;
if (!collectionChanges.HasIncrementalChanges || collectionChanges.HasMoves) {
// we need to reload all if the incremental diffs are not available
collectionView.ReloadData();
} else {
// if we have incremental diffs, tell the collection view to animate insertions and deletions
collectionView.PerformBatchUpdates(() => {
var removedIndexes = collectionChanges.RemovedIndexes;
if (removedIndexes != null && removedIndexes.Count > 0) {
collectionView.DeleteItems(GetIndexesWithSection(removedIndexes, 0));
}
var insertedIndexes = collectionChanges.InsertedIndexes;
if (insertedIndexes != null && insertedIndexes.Count > 0) {
collectionView.InsertItems(GetIndexesWithSection(insertedIndexes, 0));
if (_picker.ShowCameraButton && _picker.AutoSelectCameraImages) {
foreach (var path in GetIndexesWithSection(insertedIndexes, 0)) {
collectionView.Source.ItemSelected(collectionView, path);
}
}
}
var changedIndexes = collectionChanges.ChangedIndexes;
if (changedIndexes != null && changedIndexes.Count > 0) {
collectionView.ReloadItems(GetIndexesWithSection(changedIndexes, 0));
}
}, (x) => {
if (_picker.GridSortOrder == SortOrder.Ascending)
{
var item = collectionView.NumberOfItemsInSection(0) - 1;
var path = NSIndexPath.FromItemSection(item, 0);
collectionView.ScrollToItem(path, UICollectionViewScrollPosition.Bottom, true);
}
else
{
var path = NSIndexPath.FromItemSection(0, 0);
collectionView.ScrollToItem(path, UICollectionViewScrollPosition.Top, true);
}
});
}
ResetCachedAssets();
}
});
}
public void PhotoLibraryDidChange (PHChange changeInstance)
{
BeginInvokeOnMainThread(() => {
// check if there are changes to the assets (insertions, deletions, updates)
var collectionChanges = changeInstance.GetFetchResultChangeDetails(assetsFetchResults);
if (collectionChanges != null) {
assetsFetchResults = collectionChanges.FetchResultAfterChanges;
if (!collectionChanges.HasIncrementalChanges || collectionChanges.HasMoves) {
CollectionView.ReloadData();
} else {
var removedIndexes = indexPathsFromIndexSet(collectionChanges.RemovedIndexes);
var insertedIndexes = indexPathsFromIndexSet(collectionChanges.InsertedIndexes);
var changedIndexes = indexPathsFromIndexSet(collectionChanges.ChangedIndexes);
// if we have incremental diffs, tell the collection view to animate insertions and deletions
CollectionView.PerformBatchUpdates(() => {
if (!removedIndexes.IsEmpty()) CollectionView.DeleteItems(removedIndexes.ToArray());
if (!insertedIndexes.IsEmpty()) CollectionView.InsertItems(insertedIndexes.ToArray());
if (!changedIndexes.IsEmpty()) CollectionView.ReloadItems(changedIndexes.ToArray());
}, null);
}
}
});
}
public void UpdateFetchResult(PHFetchResult fetchResults)
{
_fetchResults = fetchResults;
}
private void OnPhotoLibraryDidChange(PHFetchResult fetchResult)
{
lock (_locker)
{
InitialiseAssets(fetchResult);
InitialiseImages(_assets);
}
this.RaiseEvent(PhotoLibraryChanged, EventArgs.Empty);
}
private void InitialiseAssets(PHFetchResult fetchResult)
{
_fetchResult = fetchResult;
_assets = fetchResult.Cast<PHAsset>()
.Where(x => x.PixelWidth > 0 && x.PixelHeight > 0)
.ToDictionary(x => x.LocalIdentifier);
}
public void PhotoLibraryDidChange (PHChange changeInstance)
{
// Change notifications may be made on a background queue. Re-dispatch to the
// main queue before acting on the change as we'll be updating the UI.
DispatchQueue.MainQueue.DispatchSync (() => {
// Check each of the three top-level fetches for changes.
// Update the cached fetch result.
var changeDetails = changeInstance.GetFetchResultChangeDetails (allPhotos);
if (changeDetails != null) {
allPhotos = changeDetails.FetchResultAfterChanges;
// (The table row for this one doesn't need updating, it always says "All Photos".)
}
// Update the cached fetch results, and reload the table sections to match.
changeDetails = changeInstance.GetFetchResultChangeDetails (smartAlbums);
if (changeDetails != null) {
smartAlbums = changeDetails.FetchResultAfterChanges;
TableView.ReloadSections (NSIndexSet.FromIndex ((int)Section.SmartAlbums), UITableViewRowAnimation.Automatic);
}
changeDetails = changeInstance.GetFetchResultChangeDetails (userCollections);
if (changeDetails != null) {
userCollections = changeDetails.FetchResultAfterChanges;
TableView.ReloadSections (NSIndexSet.FromIndex ((int)Section.UserCollections), UITableViewRowAnimation.Automatic);
}
});
}
public PhotosViewController(IntPtr handle) : base(handle)
{
imageManager = new PHImageManager();
Images = PHAsset.FetchAssets(PHAssetMediaType.Image, null);
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(observer = new PhotoLibraryObserver(this));
}
public void UpdateFetchResult(PHFetchResult fetchResult)
{
_updatedFetchResult = fetchResult;
}
