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);
}
public override void PrepareForSegue(UIStoryboardSegue segue, NSObject sender)
{
var destination = (segue.DestinationViewController as UINavigationController)?.TopViewController as AssetGridViewController;
if (destination == null)
{
throw new InvalidProgramException("unexpected view controller for segue");
}
var cell = sender as UITableViewCell;
if (destination == null)
{
throw new InvalidProgramException("unexpected cell for segue");
}
destination.Title = cell.TextLabel.Text;
switch (segue.Identifier)
{
case showAllPhotos:
destination.FetchResult = allPhotos;
break;
case showCollection:
// get the asset collection for the selected row
var indexPath = TableView.IndexPathForCell(cell);
PHCollection collection = null;
switch ((Section)indexPath.Section)
{
case Section.SmartAlbums:
collection = (PHAssetCollection)smartAlbums.ObjectAt(indexPath.Row);
break;
case Section.UserCollections:
collection = (PHCollection)userCollections.ObjectAt(indexPath.Row);
break;
}
// configure the view controller with the asset collection
var assetCollection = collection as PHAssetCollection;
if (assetCollection == null)
{
throw new InvalidProgramException("expected asset collection");
}
destination.FetchResult = PHAsset.FetchAssets(assetCollection, null);
destination.AssetCollection = assetCollection;
break;
}
}
public void Test()
{
// Fetch PHAssetCollections
var topLevelUserCollections = PHCollection.FetchTopLevelUserCollections(null);
var smartAlbums = PHAssetCollection.FetchAssetCollections(PHAssetCollectionType.SmartAlbum, PHAssetCollectionSubtype.AlbumRegular, null);
_collectionsFetchResults = new List <PHFetchResult> {
topLevelUserCollections, smartAlbums
};
_collectionsLocalizedTitles = new List <string> {
"picker.table.user-albums-header".Translate(defaultValue: "Albums"), "picker.table.smart-albums-header".Translate("Smart Albums")
};
UpdateFetchResults();
}
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();
_picker = (GMImagePickerController)NavigationController.ParentViewController;
View.BackgroundColor = _picker.PickerBackgroundColor;
// Navigation bar customization
if (!string.IsNullOrWhiteSpace(_picker.CustomNavigationBarPrompt))
{
NavigationItem.Prompt = _picker.CustomNavigationBarPrompt;
}
_imageManager = new PHCachingImageManager();
// Table view aspect
TableView.RowHeight = AlbumRowHeight;
TableView.SeparatorStyle = UITableViewCellSeparatorStyle.None;
TableView.Source = new GMAlbumsViewTableViewSource(this);
// Buttons
var barButtonItemAttributes = new UITextAttributes
{
Font = UIFont.FromName(_picker.PickerFontName, _picker.PickerFontHeaderSize)
};
var cancelTitle = _picker.CustomCancelButtonTitle ?? "picker.navigation.cancel-button".Translate(defaultValue: "Cancel");
NavigationItem.LeftBarButtonItem = new UIBarButtonItem(cancelTitle,
UIBarButtonItemStyle.Plain,
Dismiss);
if (_picker.UseCustomFontForNavigationBar)
{
NavigationItem.LeftBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Normal);
NavigationItem.LeftBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Highlighted);
}
if (_picker.AllowsMultipleSelection)
{
var doneTitle = _picker.CustomDoneButtonTitle ?? "picker.navigation.done-button".Translate(defaultValue: "Done");
NavigationItem.RightBarButtonItem = new UIBarButtonItem(doneTitle,
UIBarButtonItemStyle.Done,
FinishPickingAssets);
if (_picker.UseCustomFontForNavigationBar)
{
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Normal);
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Highlighted);
}
NavigationItem.RightBarButtonItem.Enabled = !_picker.AutoDisableDoneButton || _picker.SelectedAssets.Any();
}
// Bottom toolbar
ToolbarItems = _picker.GetToolbarItems();
// Title
Title = _picker.Title ?? "picker.navigation.title".Translate(defaultValue: "Navigation bar default title");
// Fetch PHAssetCollections
var topLevelUserCollections = PHCollection.FetchTopLevelUserCollections(null);
var smartAlbums = PHAssetCollection.FetchAssetCollections(PHAssetCollectionType.SmartAlbum, PHAssetCollectionSubtype.AlbumRegular, null);
_collectionsFetchResults = new List <PHFetchResult> {
topLevelUserCollections, smartAlbums
};
_collectionsLocalizedTitles = new List <string> {
"picker.table.user-albums-header".Translate(defaultValue: "Albums"), "picker.table.smart-albums-header".Translate("Smart Albums")
};
UpdateFetchResults();
// Register for changes
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
}
