private void SetupButtons()
{
if (_picker.AllowsMultipleSelection)
{
var doneTitle = _picker.CustomDoneButtonTitle ?? "picker.navigation.done-button".Translate(defaultValue: "Done");
NavigationItem.RightBarButtonItem = new UIBarButtonItem(doneTitle,
UIBarButtonItemStyle.Done,
FinishPickingAssets);
NavigationItem.RightBarButtonItem.Enabled = !_picker.AutoDisableDoneButton || _picker.SelectedAssets.Any();
}
else
{
var cancelTitle = _picker.CustomCancelButtonTitle ?? "picker.navigation.cancel-button".Translate(defaultValue: "Cancel");
NavigationItem.RightBarButtonItem = new UIBarButtonItem(cancelTitle,
UIBarButtonItemStyle.Done,
Dismiss);
}
if (_picker.UseCustomFontForNavigationBar)
{
var barButtonItemAttributes = new UITextAttributes {
Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontHeaderSize)
};
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Normal);
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Highlighted);
}
}
public override void WillDisplayHeaderView(UITableView tableView, UIView headerView, nint section)
{
var header = (UITableViewHeaderFooterView)headerView;
header.ContentView.BackgroundColor = UIColor.Clear;
header.BackgroundView.BackgroundColor = _picker.PickerBackgroundColor;
// Default is a bold font, but keep this styled as a normal font
header.TextLabel.Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontNormalSize);
header.TextLabel.TextColor = _picker.PickerTextColor;
}
public sealed override async void ViewWillAppear(bool animated)
{
try {
await _viewDidLoadAsyncTask;
base.ViewWillAppear(animated);
_finishedPickingAssets = false;
// Ensure nav and toolbar customisations are set. Defaults are in place, but the user may have changed them
View.BackgroundColor = PickerBackgroundColor;
_navigationController.Toolbar.Translucent = true;
_navigationController.Toolbar.BarTintColor = ToolbarBarTintColor;
_navigationController.Toolbar.TintColor = ToolbarTintColor;
_navigationController.Toolbar.BackgroundColor = ToolbarBackgroundColor;
_navigationController.NavigationBar.TintColor = NavigationBarTintColor;
_navigationController.NavigationBar.BarTintColor = NavigationBarBarTintColor;
_navigationController.NavigationBar.BackgroundColor = NavigationBarBackgroundColor;
UIStringAttributes attributes;
if (UseCustomFontForNavigationBar)
{
attributes = new UIStringAttributes {
ForegroundColor = NavigationBarTextColor,
Font = FontParser.GetFont(PickerBoldFontName, PickerFontHeaderSize)
};
}
else
{
attributes = new UIStringAttributes {
ForegroundColor = NavigationBarTextColor
};
}
_navigationController.NavigationBar.TitleTextAttributes = attributes;
UpdateToolbar();
_viewWillAppearAsyncTask = ViewWillAppearAsync();
await _viewWillAppearAsyncTask;
}
catch (Exception ex)
{
//Handle
Console.WriteLine(ex);
}
}
private void SetupButtons()
{
if (_picker.AllowsMultipleSelection)
{
var doneTitle = _picker.CustomDoneButtonTitle ?? "picker.navigation.done-button".Translate(defaultValue: "Done");
NavigationItem.RightBarButtonItem = new UIBarButtonItem(doneTitle,
UIBarButtonItemStyle.Done,
FinishPickingAssets);
NavigationItem.RightBarButtonItem.Enabled = !_picker.AutoDisableDoneButton || _picker.SelectedAssets.Any();
}
else
{
var cancelTitle = _picker.CustomCancelButtonTitle ?? "picker.navigation.cancel-button".Translate(defaultValue: "Cancel");
NavigationItem.RightBarButtonItem = new UIBarButtonItem(cancelTitle,
UIBarButtonItemStyle.Done,
Dismiss);
}
if (!string.IsNullOrWhiteSpace(_picker.CustomBackButtonTitle))
{
NavigationItem.BackButtonTitle = _picker.CustomBackButtonTitle;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(14, 0))
{
NavigationItem.BackButtonDisplayMode = _picker.BackButtonDisplayMode;
}
else
{
if (_picker.BackButtonDisplayMode == UINavigationItemBackButtonDisplayMode.Minimal)
{
NavigationItem.BackButtonTitle = "";
}
}
if (_picker.UseCustomFontForNavigationBar)
{
var barButtonItemAttributes = new UITextAttributes {
Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontHeaderSize)
};
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Normal);
NavigationItem.RightBarButtonItem.SetTitleTextAttributes(barButtonItemAttributes, UIControlState.Highlighted);
}
}
public override void WillDisplayHeaderView(UITableView tableView, UIView headerView, nint section)
{
var header = (UITableViewHeaderFooterView)headerView;
header.ContentView.BackgroundColor = UIColor.Clear;
if (header.BackgroundView != null)
{
header.BackgroundView.BackgroundColor = _picker.PickerBackgroundColor;
}
else if (UIDevice.CurrentDevice.CheckSystemVersion(14, 0))
{
if (header.BackgroundConfiguration != null)
{
header.BackgroundConfiguration.BackgroundColor = _picker.PickerBackgroundColor;
}
}
// Default is a bold font, but keep this styled as a normal font
header.TextLabel.Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontNormalSize);
header.TextLabel.TextColor = _picker.PickerTextColor;
}
public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
{
var cell = (GMAlbumsViewCell)tableView.DequeueReusableCell(CellReuseIdentifier);
if (cell == null)
{
cell = new GMAlbumsViewCell(UITableViewCellStyle.Subtitle, CellReuseIdentifier);
cell.Accessory = UITableViewCellAccessory.DisclosureIndicator;
}
// Increment the cell's tag
var currentTag = cell.Tag + 1;
cell.Tag = currentTag;
// Set the label
cell.TextLabel.Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontHeaderSize);
cell.TextLabel.Text = _collectionsFetchResultsTitles[indexPath.Section][indexPath.Row];
cell.TextLabel.TextColor = _picker.PickerTextColor;
// Retrieve the pre-fetched assets for this album:
var assetsFetchResult = _collectionsFetchResultsAssets[indexPath.Section][indexPath.Row];
// Display the number of assets
if (_picker.DisplayAlbumsNumberOfAssets)
{
cell.DetailTextLabel.Font = FontParser.GetFont(_picker.PickerFontName, _picker.PickerFontNormalSize);
// Just use the number of assets. Album app does this:
cell.DetailTextLabel.Text = string.Format("{0:0}", assetsFetchResult.Count);
cell.DetailTextLabel.TextColor = _picker.PickerTextColor;
}
var numberOfAssets = assetsFetchResult.Count;
// Set the 3 images (if exists):
if (numberOfAssets > 0)
{
var scale = UIScreen.MainScreen.Scale;
var options = new PHImageRequestOptions
{
Synchronous = false,
NetworkAccessAllowed = true,
DeliveryMode = PHImageRequestOptionsDeliveryMode.Opportunistic,
ResizeMode = PHImageRequestOptionsResizeMode.Fast
};
// Compute the thumbnail pixel size:
var tableCellThumbnailSize1 = new CGSize(AlbumThumbnailSize1.Width * scale, AlbumThumbnailSize1.Height * scale);
var asset = (PHAsset)assetsFetchResult[_picker.GridSortOrder == SortOrder.Ascending ? numberOfAssets - 1 : 0];
cell.SetVideoLayout(asset.MediaType == PHAssetMediaType.Video);
_imageManager.RequestImageForAsset(asset,
tableCellThumbnailSize1,
PHImageContentMode.AspectFill,
options,
(image, info) => {
if (cell.Tag == currentTag && cell.ImageView1 != null && image != null)
{
cell.ImageView1.Image = image;
}
});
// Second & third images:
// TODO: Only preload the 3pixels height visible frame!
if (numberOfAssets > 1)
{
// Compute the thumbnail pixel size:
var tableCellThumbnailSize2 = new CGSize(AlbumThumbnailSize2.Width * scale, AlbumThumbnailSize2.Height * 2);
asset = (PHAsset)assetsFetchResult[_picker.GridSortOrder == SortOrder.Ascending ? numberOfAssets - 2 : 1];
_imageManager.RequestImageForAsset(asset,
tableCellThumbnailSize2,
PHImageContentMode.AspectFill,
options,
(image, info) => {
if (cell.Tag == currentTag && cell.ImageView2 != null && image != null)
{
cell.ImageView2.Image = image;
}
});
}
else
{
cell.ImageView2.Image = null;
}
if (numberOfAssets > 2)
{
// Compute the thumbnail pixel size:
var tableCellThumbnailSize3 = new CGSize(AlbumThumbnailSize3.Width * scale, AlbumThumbnailSize3.Height * 2);
asset = (PHAsset)assetsFetchResult[_picker.GridSortOrder == SortOrder.Ascending ? numberOfAssets - 3 : 2];
_imageManager.RequestImageForAsset(asset,
tableCellThumbnailSize3,
PHImageContentMode.AspectFill,
options,
(image, info) => {
if (cell.Tag == currentTag && cell.ImageView3 != null && image != null)
{
cell.ImageView3.Image = image;
}
});
}
else
{
cell.ImageView3.Image = null;
}
}
else
{
cell.SetVideoLayout(false);
var emptyFolder = UIImage.FromFile("GMEmptyFolder");
cell.ImageView3.Image = emptyFolder;
cell.ImageView2.Image = emptyFolder;
cell.ImageView1.Image = emptyFolder;
}
return(cell);
}
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;
// Buttons
var barButtonItemAttributes = new UITextAttributes
{
Font = FontParser.GetFont(_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);
// Test
SelectAllAlbumsCell();
}