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add optional "hideIfEmpty" parameter in "listAlbums" API to show empty albums, only available on iOS platform

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This commit is contained in:
Wenqi Li 2021-04-15 20:35:53 +08:00
parent 270432154d
commit ea75f18cfe
2 changed files with 9 additions and 4 deletions
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9
ios/Classes/SwiftPhotoGalleryPlugin.swift
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@ -15,7 +15,8 @@ public class SwiftPhotoGalleryPlugin: NSObject, FlutterPlugin {
if(call.method == "listAlbums") { if(call.method == "listAlbums") {
let arguments = call.arguments as! Dictionary<String, AnyObject> let arguments = call.arguments as! Dictionary<String, AnyObject>
let mediumType = arguments["mediumType"] as! String let mediumType = arguments["mediumType"] as! String
result(listAlbums(mediumType: mediumType)) let hideIfEmpty = arguments["hideIfEmpty"] as? Bool
result(listAlbums(mediumType: mediumType, hideIfEmpty: hideIfEmpty))
} }
else if(call.method == "listMedia") { else if(call.method == "listMedia") {
let arguments = call.arguments as! Dictionary<String, AnyObject> let arguments = call.arguments as! Dictionary<String, AnyObject>
@ -89,7 +90,7 @@ public class SwiftPhotoGalleryPlugin: NSObject, FlutterPlugin {
private var assetCollections : [PHAssetCollection] = [] private var assetCollections : [PHAssetCollection] = []
private func listAlbums(mediumType: String) -> [NSDictionary] { private func listAlbums(mediumType: String, hideIfEmpty: Bool? = true) -> [NSDictionary] {
self.assetCollections = [] self.assetCollections = []
let fetchOptions = PHFetchOptions() let fetchOptions = PHFetchOptions()
var total = 0 var total = 0
@ -142,13 +143,13 @@ public class SwiftPhotoGalleryPlugin: NSObject, FlutterPlugin {
// Smart Albums. // Smart Albums.
processPHAssetCollections( processPHAssetCollections(
fetchResult: PHAssetCollection.fetchAssetCollections(with: .smartAlbum, subtype: .albumRegular, options: fetchOptions), fetchResult: PHAssetCollection.fetchAssetCollections(with: .smartAlbum, subtype: .albumRegular, options: fetchOptions),
hideIfEmpty: true hideIfEmpty: hideIfEmpty ?? true
) )
// User-created collections. // User-created collections.
processPHCollections( processPHCollections(
fetchResult: PHAssetCollection.fetchTopLevelUserCollections(with: fetchOptions), fetchResult: PHAssetCollection.fetchTopLevelUserCollections(with: fetchOptions),
hideIfEmpty: true hideIfEmpty: hideIfEmpty ?? true
) )
albums.insert([ albums.insert([

4
lib/photo_gallery.dart
View File

@ -25,9 +25,11 @@ class PhotoGallery {
/// List all available gallery albums and counts number of items of [MediumType]. /// List all available gallery albums and counts number of items of [MediumType].
static Future<List<Album>> listAlbums({ static Future<List<Album>> listAlbums({
required MediumType mediumType, required MediumType mediumType,
bool? hideIfEmpty = true,
}) async { }) async {
final json = await _channel.invokeMethod('listAlbums', { final json = await _channel.invokeMethod('listAlbums', {
'mediumType': mediumTypeToJson(mediumType), 'mediumType': mediumTypeToJson(mediumType),
'hideIfEmpty': hideIfEmpty
}); });
return json.map<Album>((x) => Album.fromJson(x)).toList(); return json.map<Album>((x) => Album.fromJson(x)).toList();
} }
@ -78,6 +80,7 @@ class PhotoGallery {
'height': height, 'height': height,
'highQuality': highQuality, 'highQuality': highQuality,
}); });
if (bytes == null) throw "Failed to fetch thumbnail of medium $mediumId";
return new List<int>.from(bytes); return new List<int>.from(bytes);
} }
@ -96,6 +99,7 @@ class PhotoGallery {
'height': height, 'height': height,
'highQuality': highQuality, 'highQuality': highQuality,
}); });
if (bytes == null) throw "Failed to fetch thumbnail of album $albumId";
return new List<int>.from(bytes); return new List<int>.from(bytes);
} }