fluttercandies · CaiJingLong · Mar 29, 2020 · Mar 29, 2020
diff --git a/example/lib/model/photo_provider.dart b/example/lib/model/photo_provider.dart
@@ -12,7 +12,7 @@ class PhotoProvider extends ChangeNotifier {
 
   var onlyAll = false;
 
-  Map<AssetPathEntity, PathProvider> pathProviderMap = {};
+  Map<AssetPathEntity, AssetPathProvider> pathProviderMap = {};
 
   bool _notifying = false;
 
@@ -144,8 +144,8 @@ class PhotoProvider extends ChangeNotifier {
     this.list.addAll(galleryList);
   }
 
-  PathProvider getOrCreatePathProvider(AssetPathEntity pathEntity) {
-    pathProviderMap[pathEntity] ??= PathProvider(pathEntity);
+  AssetPathProvider getOrCreatePathProvider(AssetPathEntity pathEntity) {
+    pathProviderMap[pathEntity] ??= AssetPathProvider(pathEntity);
     return pathProviderMap[pathEntity];
   }
 
@@ -208,13 +208,13 @@ class PhotoProvider extends ChangeNotifier {
   }
 }
 
-class PathProvider extends ChangeNotifier {
+class AssetPathProvider extends ChangeNotifier {
   static const loadCount = 50;
 
   bool isInit = false;
 
   final AssetPathEntity path;
-  PathProvider(this.path);
+  AssetPathProvider(this.path);
 
   List<AssetEntity> list = [];
 
@@ -229,6 +229,7 @@ class PathProvider extends ChangeNotifier {
   }
 
   Future onRefresh() async {
+    await path.refreshPathProperties();
     final list = await path.getAssetListPaged(0, loadCount);
     page = 0;
     this.list.clear();
@@ -253,13 +254,23 @@ class PathProvider extends ChangeNotifier {
   void delete(AssetEntity entity) async {
     final result = await PhotoManager.editor.deleteWithIds([entity.id]);
     if (result.isNotEmpty) {
-      await Future.delayed(Duration(seconds: 3));
+      final rangeEnd = this.list.length;
       await provider.refreshAllGalleryProperties();
-      final list =
-          await path.getAssetListRange(start: 0, end: this.list.length);
+      final list = await path.getAssetListRange(start: 0, end: rangeEnd);
+      this.list.clear();
+      this.list.addAll(list);
       printListLength("deleted");
+    }
+  }
+
+  void removeInAlbum(AssetEntity entity) async {
+    if (await PhotoManager.editor.iOS.removeInAlbum(entity, path)) {
+      final rangeEnd = this.list.length;
+      await provider.refreshAllGalleryProperties();
+      final list = await path.getAssetListRange(start: 0, end: rangeEnd);
       this.list.clear();
       this.list.addAll(list);
+      printListLength("removeInAlbum");
     }
   }
 

diff --git a/example/lib/page/image_list_page.dart b/example/lib/page/image_list_page.dart
@@ -30,7 +30,7 @@ class _GalleryContentListPageState extends State<GalleryContentListPage> {
 
   PhotoProvider get photoProvider => Provider.of<PhotoProvider>(context);
 
-  PathProvider get provider =>
+  AssetPathProvider get provider =>
       Provider.of<PhotoProvider>(context).getOrCreatePathProvider(path);
 
   @override
@@ -150,6 +150,7 @@ class _GalleryContentListPageState extends State<GalleryContentListPage> {
                 child: Text("Copy to another path"),
                 onPressed: () => copyToAnotherPath(entity),
               ),
+              _buildRemoveInAlbumWidget(entity),
             ],
           ),
         );
@@ -277,4 +278,19 @@ class _GalleryContentListPageState extends State<GalleryContentListPage> {
       ),
     );
   }
+
+  Widget _buildRemoveInAlbumWidget(AssetEntity entity) {
+    if (!Platform.isIOS) {
+      return Container();
+    }
+
+    return RaisedButton(
+      child: Text("Remove in album"),
+      onPressed: () => deleteAssetInAlbum(entity),
+    );
+  }
+
+  void deleteAssetInAlbum(entity) {
+    provider.removeInAlbum(entity);
+  }
 }
diff --git a/ios/Classes/core/PMManager.h b/ios/Classes/core/PMManager.h
@@ -69,4 +69,6 @@ typedef void (^AssetResult)(PMAssetEntity *);
 - (void)createFolderWithName:(NSString *)name parentId:(NSString *)id block:(void (^)(NSString *, NSString *))block;
 
 - (void)createAlbumWithName:(NSString *)name parentId:(NSString *)id block:(void (^)(NSString *, NSString *))block;
+
+- (void)removeInAlbumWithAssetId:(NSArray *)id albumId:(NSString *)albumId block:(void (^)(NSString *))block;
 @end
diff --git a/ios/Classes/core/PMManager.m b/ios/Classes/core/PMManager.m
@@ -1046,4 +1046,34 @@ - (void)createAlbumWithName:(NSString *)name parentId:(NSString *)id block:(void
     block(targetId, error.localizedDescription);
   }
 }
+
+- (void)removeInAlbumWithAssetId:(NSArray *)id albumId:(NSString *)albumId block:(void (^)(NSString *))block {
+  PHFetchResult<PHAssetCollection *> *result = [PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers:@[albumId] options:nil];
+  PHAssetCollection *collection;
+  if (result && result.count > 0) {
+    collection = result.firstObject;
+  } else {
+    block(@"Can't found the collection.");
+    return;
+  }
+
+  if (![collection canPerformEditOperation:PHCollectionEditOperationRemoveContent]) {
+    block(@"The collection cannot remove asset by user.");
+    return;
+  }
+
+  PHFetchResult<PHAsset *> *assetResult = [PHAsset fetchAssetsWithLocalIdentifiers:id options:nil];
+  NSError *error;
+  [PHPhotoLibrary.sharedPhotoLibrary
+          performChangesAndWait:^{
+              PHAssetCollectionChangeRequest *request = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:collection];
+              [request removeAssets:assetResult];
+          } error:&error];
+  if (error) {
+    block([NSString stringWithFormat:@"Remove error: %@", error]);
+    return;
+  }
+
+  block(nil);
+}
 @end
diff --git a/ios/Classes/core/PMPlugin.m b/ios/Classes/core/PMPlugin.m
@@ -257,25 +257,38 @@ - (void)onAuth:(FlutterMethodCall *)call result:(FlutterResult)result {
         BOOL isRoot = [call.arguments[@"isRoot"] boolValue];
         NSString *parentId = call.arguments[@"folderId"];
 
-        if(isRoot){
+        if (isRoot) {
           parentId = nil;
         }
 
-        [manager createFolderWithName:name parentId:parentId block:^(NSString*id,NSString *errorMsg){
-
+        [manager createFolderWithName:name parentId:parentId block:^(NSString *id, NSString *errorMsg) {
+            [handler reply:[self convertToResult:@{@"id": id, @"errorMsg": errorMsg}]];
         }];
 
       } else if ([@"createAlbum" isEqualToString:call.method]) {
         NSString *name = call.arguments[@"name"];
         BOOL isRoot = [call.arguments[@"isRoot"] boolValue];
         NSString *parentId = call.arguments[@"folderId"];
 
-        if(isRoot){
+        if (isRoot) {
           parentId = nil;
         }
 
-        [manager createAlbumWithName:name parentId:parentId block:^(NSString*id,NSString *errorMsg){
+        [manager createAlbumWithName:name parentId:parentId block:^(NSString *id, NSString *errorMsg) {
+            NSDictionary *dictionary = @{@"id": id, @"errorMsg": errorMsg};
+            [handler reply:[self convertToResult:dictionary]];
+        }];
+
+      } else if ([@"removeInAlbum" isEqualToString:call.method]) {
+        NSArray *assetId = call.arguments[@"assetId"];
+        NSString *pathId = call.arguments[@"pathId"];
 
+        [manager removeInAlbumWithAssetId:assetId albumId:pathId block:^(NSString *msg) {
+            if (msg) {
+              [handler reply:@{@"msg": msg}];
+            } else {
+              [handler reply:@{@"success": @YES}];
+            }
         }];
 
       } else {
@@ -285,6 +298,19 @@ - (void)onAuth:(FlutterMethodCall *)call result:(FlutterResult)result {
 
 }
 
+- (NSDictionary *)convertToResult:(NSDictionary *)dict {
+  NSMutableDictionary *result = [NSMutableDictionary new];
+
+  for (id key in dict.allKeys) {
+    id value = dict[key];
+    if (value) {
+      result[key] = value;
+    }
+  }
+
+  return result;
+}
+
 - (unsigned long)getTimestamp:(FlutterMethodCall *)call {
   unsigned long timestamp = [call.arguments[@"timestamp"] unsignedLongValue];
   return timestamp;

diff --git a/lib/src/editor.dart b/lib/src/editor.dart
@@ -109,6 +109,44 @@ class IosEditor {
       return _plugin.iosCreateAlbum(name, false, parent);
     }
   }
+
+  Future<bool> removeInAlbum(AssetEntity entity, AssetPathEntity path) async {
+    if (entity == null || path == null) {
+      assert(entity != null, "");
+      assert(path != null, "");
+      return false;
+    }
+    if (path.albumType == 2 || path.isAll) {
+      assert(path.albumType == 1, "The path must is album");
+      assert(
+        !path.isAll,
+        "The ${path.name}'s asset can't be remove. Use PhotoManager.editor.deleteAsset",
+      );
+      return false;
+    }
+    return _plugin.iosRemoveInAlbum([entity], path);
+  }
+
+  Future<bool> removeAssetsInAlbum(
+      List<AssetEntity> list, AssetPathEntity path) async {
+    if (list == null || path == null) {
+      assert(list != null, "");
+      assert(path != null, "");
+      return false;
+    }
+    if (list.isEmpty) {
+      return null;
+    }
+    if (path.albumType == 2 || path.isAll) {
+      assert(path.albumType == 1, "The path must is album");
+      assert(
+        !path.isAll,
+        "The ${path.name} can't be remove. Use PhotoManager.editor.deleteAsset",
+      );
+      return false;
+    }
+    return _plugin.iosRemoveInAlbum(list, path);
+  }
 }
 
 class AndroidEditor {}
diff --git a/lib/src/plugin.dart b/lib/src/plugin.dart
@@ -323,6 +323,11 @@ mixin IosPlugin on BasePlugin {
       return null;
     }
 
+    if (result["errorMsg"] != null) {
+      print("errorMsg");
+      return null;
+    }
+
     return AssetPathEntity()
       ..id = result["id"]
       ..name = name
@@ -348,13 +353,36 @@ mixin IosPlugin on BasePlugin {
       return null;
     }
 
+    if (result["errorMsg"] != null) {
+      print("errorMsg");
+      return null;
+    }
+
     return AssetPathEntity()
       ..id = result["id"]
       ..name = name
       ..isAll = false
       ..assetCount = 0
       ..albumType = 1;
   }
+
+  Future<bool> iosRemoveInAlbum(
+      List<AssetEntity> entities, AssetPathEntity path) async {
+    final result = await _channel.invokeMethod(
+      "removeInAlbum",
+      {
+        "assetId": entities.map((e) => e.id).toList(),
+        "pathId": path.id,
+      },
+    );
+
+    if (result["msg"] != null) {
+      print("cannot remove, cause by: ${result["msg"]}");
+      return false;
+    }
+
+    return true;
+  }
 }
 
 mixin AndroidPlugin on BasePlugin {}