保存视频到自定义位置

@implementationALAssetsLibrary (ZHExpand)

 

/**

 *  创建本地相册

 *

 *  @param name                        相册名称

 *  @param enumerateGroupsFailureBlock 遍历相册分组失败回调

 *  @param hasGroup                    本地已经存在该相册，请重新命名

 *  @param createSuccessedBlock        创建相册成功回调

 *  @param createFaieldBlock           创建相册失败回调

 */

- (void)zh_createAssetsGroupWithName:(NSString*)name

        enumerateGroupsFailureBlock:(void(^) (NSError*error))enumerateGroupsFailureBlock

                hasTheNewGroupBlock:(void(^) (ALAssetsGroup*group))hasGroup

               createSuccessedBlock:(void(^) (ALAssetsGroup*group))createSuccessedBlock

                  createFaieldBlock:(void(^) (NSError*error))createFaieldBlock

{

     

    __blockBOOLhasTheNewGroup = NO;

     

    [selfenumerateGroupsWithTypes:ALAssetsGroupAlbumusingBlock:^(ALAssetsGroup*group, BOOL*stop) {

         

        hasTheNewGroup = [name isEqualToString:[groupvalueForProperty:ALAssetsGroupPropertyName]];

        if(hasTheNewGroup) {

 

            [ZHBlockdispatchOnMainThread:^{

                 

                hasGroup(group);

            }];

            *stop = YES;

        }

        if(!group && !hasTheNewGroup && !*stop) {//遍历完毕，本地没有该文件夹，非手动停止的遍历

             

            [selfaddAssetsGroupAlbumWithName:nameresultBlock:^(ALAssetsGroup*agroup) {

                 

                [ZHBlockdispatchOnMainThread:^{

                     

                    createSuccessedBlock(agroup);

                }];

            }failureBlock:^(NSError*error) {

                 

                [ZHBlockdispatchOnMainThread:^{

                     

                    createFaieldBlock(error);

                }];

            }];

        }

    }failureBlock:^(NSError*error) {

         

        [ZHBlockdispatchOnMainThread:^{

             

            enumerateGroupsFailureBlock(error);

        }];

    }];

}

 

/**

 *  保存视频到指定相册（直接调用可保存到指定分组）

 *

 *  @param path             视频路径

 *  @param name             相册名称

 *  @param saveSuccessBlock 保存成功回调

 *  @param saveFaieldBlock  保存失败回调

 */

- (void)zh_saveVideoWithVideoPath:(NSString*)path

                         toAlbum:(NSString*)name

                saveSuccessBlock:(void(^) (ALAssetsGroup*group, NSURL*assetURL, ALAsset*asset))saveSuccessBlock

                 saveFaieldBlock:(void(^) (NSError*error))saveFaieldBlock

{

     

    [selfwriteVideoAtPathToSavedPhotosAlbum:[NSURLfileURLWithPath:path]completionBlock:^(NSURL*assetURL, NSError*error) {//先添加到公众相册

         

        if(error) {

            [ZHBlockdispatchOnMainThread:^{

                 

                saveFaieldBlock(error);

            }];

            return;

        }

         

        [selfzh_addVideoToAssetGroupWithAssetUrl:assetURLtoAlbum:nameaddSuccessBlock:^(ALAssetsGroup*targetGroup, NSURL*currentAssetUrl, ALAsset*currentAsset) {

             

            [ZHBlockdispatchOnMainThread:^{

                 

                saveSuccessBlock(targetGroup,currentAssetUrl,currentAsset);

            }];

        }addFaieldBlock:^(NSError*error) {

             

            [ZHBlockdispatchOnMainThread:^{

                 

                saveFaieldBlock(error);

            }];

        }];

    }];

}

 

/**

 *  添加相册视频到指定分组

 *

 *  @param assetURL        视频在相册的URL

 *  @param name            指定分组名称

 *  @param addSuccessBlock 添加成功回调

 *  @param addFaieldBlock  添加失败回调

 */

- (void)zh_addVideoToAssetGroupWithAssetUrl:(NSURL*)assetURL

                                   toAlbum:(NSString*)name

                           addSuccessBlock:(void(^) (ALAssetsGroup*targetGroup, NSURL*currentAssetUrl, ALAsset*currentAsset))addSuccessBlock

                            addFaieldBlock:(void(^) (NSError*error))addFaieldBlock

{

 

    [selfzh_createAssetsGroupWithName:nameenumerateGroupsFailureBlock:^(NSError*error) {

         

        if(error) {

            [ZHBlockdispatchOnMainThread:^{

                 

                addFaieldBlock(error);

            }];

            return;

        }

    }hasTheNewGroupBlock:^(ALAssetsGroup*group) {

         

        [selfassetForURL:assetURLresultBlock:^(ALAsset*asset) {//得到视频的ALAsset实例

             

            [groupaddAsset:asset];//添加视频到指定相册分组

            [ZHBlockdispatchOnMainThread:^{

                 

                addSuccessBlock(group,assetURL,asset);

            }];

        }failureBlock:^(NSError*error) {

             

            if(error) {

                [ZHBlockdispatchOnMainThread:^{

                     

                    addFaieldBlock(error);

                }];

                return;

            }

        }];

    }createSuccessedBlock:^(ALAssetsGroup*group) {

         

        [selfassetForURL:assetURLresultBlock:^(ALAsset*asset) {

             

            [groupaddAsset:asset];

            [ZHBlockdispatchOnMainThread:^{

                 

                addSuccessBlock(group,assetURL,asset);

            }];

        }failureBlock:^(NSError*error) {

             

            if(error) {

                [ZHBlockdispatchOnMainThread:^{

                     

                    addFaieldBlock(error);

                }];

                return;

            }

        }];

    }createFaieldBlock:^(NSError*error) {

         

        if(error) {

            [ZHBlockdispatchOnMainThread:^{

                 

                addFaieldBlock(error);

            }];

            return;

        }

    }];

}