public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
// Set the appropriate toolbarItems based on the mediaType of the asset.
if (Asset.MediaType == PHAssetMediaType.Video)
{
ShowPlaybackToolbar();
}
else
{
ShowStaticToolbar();
}
// Enable the edit button if the asset can be edited.
bool isEditable = Asset.CanPerformEditOperation(PHAssetEditOperation.Properties) ||
Asset.CanPerformEditOperation(PHAssetEditOperation.Content);
EditButton.Enabled = isEditable;
// Enable the trash button if the asset can be deleted.
bool isTrashable = AssetCollection != null?
AssetCollection.CanPerformEditOperation(PHCollectionEditOperation.RemoveContent) :
Asset.CanPerformEditOperation(PHAssetEditOperation.Delete);
TrashButton.Enabled = isTrashable;
UpdateImage();
View.LayoutIfNeeded();
}
public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
// Set the appropriate toolbarItems based on the mediaType of the asset.
if (Asset.MediaType == PHAssetMediaType.Video)
{
#if __IOS__ && !__TVOS__
ToolbarItems = new UIBarButtonItem [] { FavoriteButton, Space, PlayButton, Space, TrashButton };
if (NavigationController != null)
{
NavigationController.ToolbarHidden = false;
}
#elif __TVOS__
NavigationItem.LeftBarButtonItems = new UIBarButtonItem [] { PlayButton, FavoriteButton, TrashButton };
#endif
}
else
{
// Live Photos have their own playback UI, so present them like regular photos, just like Photos app
#if __IOS__ && !__TVOS__
ToolbarItems = new UIBarButtonItem [] { FavoriteButton, Space, TrashButton };
if (NavigationController != null)
{
NavigationController.ToolbarHidden = false;
}
#elif __TVOS__
NavigationItem.LeftBarButtonItems = new UIBarButtonItem [] { FavoriteButton, TrashButton };
#endif
}
// Enable editing buttons if the asset can be edited.
EditButton.Enabled = Asset.CanPerformEditOperation(PHAssetEditOperation.Content);
FavoriteButton.Enabled = Asset.CanPerformEditOperation(PHAssetEditOperation.Properties);
FavoriteButton.Title = Asset.Favorite ? "♥︎" : "♡";
// Enable the trash button if the asset can be deleted.
if (AssetCollection != null)
{
TrashButton.Enabled = AssetCollection.CanPerformEditOperation(PHCollectionEditOperation.RemoveContent);
}
else
{
TrashButton.Enabled = Asset.CanPerformEditOperation(PHAssetEditOperation.Delete);
}
// Make sure the view layout happens before requesting an image sized to fit the view.
View.LayoutIfNeeded();
UpdateImage();
}