public override void AwakeFromNib ()
{
imageManager = new PHCachingImageManager ();
ResetCachedAssets ();
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver (this);
}
public sealed override async void ViewDidLoad()
{
try
{
base.ViewDidLoad();
SetupViews();
if (!string.IsNullOrEmpty(_picker.CustomNavigationBarPrompt))
{
NavigationItem.Prompt = _picker.CustomNavigationBarPrompt;
}
_imageManager = new PHCachingImageManager();
ResetCachedAssets();
// Register for changes
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
_viewDidLoadAsyncTask = ViewDidLoadAsync();
await _viewDidLoadAsyncTask;
}
catch (Exception ex)
{
//Handle
}
}
public override void AwakeFromNib()
{
imageManager = new PHCachingImageManager();
ResetCachedAssets();
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
SetupViews ();
if (!string.IsNullOrEmpty(_picker.CustomNavigationBarPrompt)) {
NavigationItem.Prompt = _picker.CustomNavigationBarPrompt;
}
_imageManager = new PHCachingImageManager ();
ResetCachedAssets ();
// Register for changes
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver (this);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
SetupViews();
if (!string.IsNullOrEmpty(_picker.CustomNavigationBarPrompt))
{
NavigationItem.Prompt = _picker.CustomNavigationBarPrompt;
}
_imageManager = new PHCachingImageManager();
ResetCachedAssets();
// Register for changes
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver(this);
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0))
{
EdgesForExtendedLayout = UIRectEdge.None;
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad ();
PHPhotoLibrary.RequestAuthorization ((status) => {
if(status == PHAuthorizationStatus.Authorized)
{
var result = PHAssetCollection.FetchTopLevelUserCollections(null);
var assetCollection = result.firstObject as PHAssetCollection;
var imageManager = new PHCachingImageManager();
var assets = PHAsset.FetchAssets(assetCollection, null);
var imageAsset = assets[6];
this.InvokeOnMainThread(() => {
imageManager.RequestImageForAsset((PHAsset)imageAsset, this.View.Frame.Size, PHImageContentMode.Default, null, new PHImageResultHandler(this.ImageReceived));
});
}
});
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
PHPhotoLibrary.RequestAuthorization((status) => {
if (status == PHAuthorizationStatus.Authorized)
{
var result = PHAssetCollection.FetchTopLevelUserCollections(null);
var assetCollection = result.firstObject as PHAssetCollection;
var imageManager = new PHCachingImageManager();
var assets = PHAsset.FetchAssets(assetCollection, null);
var imageAsset = assets[6];
this.InvokeOnMainThread(() => {
imageManager.RequestImageForAsset((PHAsset)imageAsset, this.View.Frame.Size, PHImageContentMode.Default, null, new PHImageResultHandler(this.ImageReceived));
});
}
});
}
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 ImageModel(PHAsset asset, PHCachingImageManager manager)
{
ImageAsset = asset;
ImageManager = manager;
}
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);
}
async Task <IList <MediaAsset> > LoadMediaAsync()
{
IList <MediaAsset> assets = new List <MediaAsset>();
var imageManager = new PHCachingImageManager();
var hasPermission = await RequestPermissionAsync();
if (hasPermission)
{
await Task.Run(async() =>
{
var thumbnailRequestOptions = new PHImageRequestOptions();
thumbnailRequestOptions.ResizeMode = PHImageRequestOptionsResizeMode.Fast;
thumbnailRequestOptions.DeliveryMode = PHImageRequestOptionsDeliveryMode.FastFormat;
thumbnailRequestOptions.NetworkAccessAllowed = true;
thumbnailRequestOptions.Synchronous = true;
var requestOptions = new PHImageRequestOptions();
requestOptions.ResizeMode = PHImageRequestOptionsResizeMode.Exact;
requestOptions.DeliveryMode = PHImageRequestOptionsDeliveryMode.HighQualityFormat;
requestOptions.NetworkAccessAllowed = true;
requestOptions.Synchronous = true;
var fetchOptions = new PHFetchOptions();
fetchOptions.SortDescriptors = new NSSortDescriptor[] { new NSSortDescriptor("creationDate", false) };
fetchOptions.Predicate = NSPredicate.FromFormat($"mediaType == {(int)PHAssetMediaType.Image} || mediaType == {(int)PHAssetMediaType.Video}");
var fetchResults = PHAsset.FetchAssets(fetchOptions);
var tmpPath = Path.GetTempPath();
var allAssets = fetchResults.Select(p => p as PHAsset).ToArray();
var thumbnailSize = new CGSize(300.0f, 300.0f);
imageManager.StartCaching(allAssets, thumbnailSize, PHImageContentMode.AspectFit, thumbnailRequestOptions);
imageManager.StartCaching(allAssets, PHImageManager.MaximumSize, PHImageContentMode.AspectFit, requestOptions);
foreach (var result in fetchResults)
{
var phAsset = (result as PHAsset);
var name = PHAssetResource.GetAssetResources(phAsset)?.FirstOrDefault()?.OriginalFilename;
var asset = new MediaAsset()
{
Id = phAsset.LocalIdentifier,
Name = name,
Type = phAsset.MediaType == PHAssetMediaType.Image ? MediaAssetType.Image : MediaAssetType.Video,
};
imageManager.RequestImageForAsset(phAsset, thumbnailSize, PHImageContentMode.AspectFit, thumbnailRequestOptions, (image, info) =>
{
if (image != null)
{
NSData imageData = null;
if (image.CGImage.RenderingIntent == CGColorRenderingIntent.Default)
{
imageData = image.AsJPEG(0.8f);
}
else
{
imageData = image.AsPNG();
}
if (imageData != null)
{
var fileName = Path.Combine(tmpPath, $"tmp_thumbnail_{Path.GetFileNameWithoutExtension(name)}.jpg");
NSError error = null;
imageData.Save(fileName, true, out error);
if (error == null)
{
asset.PreviewPath = fileName;
}
}
}
});
switch (phAsset.MediaType)
{
case PHAssetMediaType.Image:
imageManager.RequestImageForAsset(phAsset, PHImageManager.MaximumSize, PHImageContentMode.AspectFit, requestOptions, (image, info) =>
{
if (image != null)
{
NSData imageData = null;
if (image.CGImage.RenderingIntent == CGColorRenderingIntent.Default)
{
imageData = image.AsJPEG(0.8f);
}
else
{
imageData = image.AsPNG();
}
if (imageData != null)
{
var fileName = Path.Combine(tmpPath, $"tmp_{name}");
NSError error = null;
imageData.Save(fileName, true, out error);
if (error == null)
{
asset.Path = fileName;
}
}
}
});
break;
case PHAssetMediaType.Video:
var videoRequestOptions = new PHVideoRequestOptions();
videoRequestOptions.NetworkAccessAllowed = true;
var tcs = new TaskCompletionSource <bool>();
imageManager.RequestAvAsset(phAsset, null, (vAsset, audioMix, info) =>
{
var avAsset = vAsset as AVUrlAsset;
var avData = NSData.FromUrl(avAsset.Url);
NSError error = null;
var path = Path.Combine(tmpPath, $"tmp_{name}");
avData.Save(path, true, out error);
if (error == null)
{
asset.Path = path;
tcs.TrySetResult(true);
}
else
{
tcs.TrySetResult(false);
}
});
await tcs.Task;
break;
}
UIApplication.SharedApplication.InvokeOnMainThread(delegate
{
OnMediaAssetLoaded?.Invoke(this, new MediaEventArgs(asset));
});
assets.Add(asset);
if (requestStop)
{
break;
}
}
});
imageManager.StopCaching();
}
return(assets);
}
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 () : true;
}
// Bottom toolbar
ToolbarItems = _picker.GetToolbarItems();
// Title
Title = _picker.Title ?? "picker.navigation.title".Translate(defaultValue: "Navigation bar default title");
// Fetch PHAssetCollections
var topLevelUserCollections = PHCollectionList.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);
if (UIDevice.CurrentDevice.CheckSystemVersion (7, 0)) {
EdgesForExtendedLayout = UIRectEdge.None;
}
}
public ImagePickerAssetModel()
{
ImageManager = new PHCachingImageManager();
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
SetupViews ();
if (!string.IsNullOrEmpty(_picker.CustomNavigationBarPrompt)) {
NavigationItem.Prompt = _picker.CustomNavigationBarPrompt;
}
_imageManager = new PHCachingImageManager ();
ResetCachedAssets ();
// Register for changes
PHPhotoLibrary.SharedPhotoLibrary.RegisterChangeObserver (this);
if (UIDevice.CurrentDevice.CheckSystemVersion (7, 0)) {
EdgesForExtendedLayout = UIRectEdge.None;
}
}
public ImageModel(PHAsset asset, PHCachingImageManager manager)
{
ImageAsset = asset;
ImageManager = manager;
}
public Task <IEnumerable <MediaAsset> > Query(MediaTypes mediaTypes, DateTimeOffset date)
{
var tcs = new TaskCompletionSource <IEnumerable <MediaAsset> >();
Task.Run(() =>
{
var filter = "creationDate >= %@ && " + GetFilter(mediaTypes);
var fetchOptions = new PHFetchOptions
{
IncludeHiddenAssets = false,
IncludeAllBurstAssets = false,
Predicate = NSPredicate.FromFormat(filter, (NSDate)date.LocalDateTime),
SortDescriptors = new [] {
new NSSortDescriptor("creationDate", false)
}
};
var fetchAssets = PHAsset
.FetchAssets(fetchOptions)
.OfType <PHAsset>()
.ToArray();
var options = new PHAssetResourceRequestOptions
{
NetworkAccessAllowed = false
};
var imageCache = new PHCachingImageManager();
imageCache.StartCaching(
fetchAssets,
PHImageManager.MaximumSize,
PHImageContentMode.Default,
new PHImageRequestOptions
{
NetworkAccessAllowed = false
}
);
var assets = new List <MediaAsset>(fetchAssets.Count());
foreach (var asset in fetchAssets)
{
//result.MediaType
//result.Hidden
//result.Duration
//result.LocalIdentifier
//result.Location;
//result.ModificationDate
//result.PixelHeight;
//result.PixelWidth;
//result.CreationDate
switch (asset.MediaType)
{
case PHAssetMediaType.Image:
imageCache.RequestImageData(
asset,
new PHImageRequestOptions
{
},
(data, fn, orientation, dict) => { }
);
break;
case PHAssetMediaType.Video:
imageCache.RequestAvAsset(
asset,
new PHVideoRequestOptions
{
NetworkAccessAllowed = false,
DeliveryMode = PHVideoRequestOptionsDeliveryMode.HighQualityFormat
},
(ass, mix, dict) => { }
);
break;
case PHAssetMediaType.Audio:
break;
}
}
imageCache.StopCaching();
tcs.SetResult(assets);
});
return(tcs.Task);
}
