相册多选功能实现，在需要调用相册的地方，添加如下代码即可：
YSHYAssetPickerController *picker = [[YSHYAssetPickerController alloc]initWithNumber:5 andHasSelectedImags:dataSource];//最多只能选5张 并传入已经选好的图片数组 picker.assetsFilter = [ALAssetsFilter allPhotos]; picker.showEmptyGroups = NO; picker.pickerDelegate = self; picker.selectionFilter = [NSPredicate predicateWithBlock:^BOOL(id evaluatedObject,NSDictionary *bindings){ if ([[(ALAsset *)evaluatedObject valueForProperty:ALAssetPropertyType]isEqual:ALAssetTypeVideo]) { NSTimeInterval duration = [[(ALAsset *)evaluatedObject valueForProperty:ALAssetPropertyDuration]doubleValue]; return duration >= 5; }else{ return YES; } }]; [self presentViewController:picker animated:YES completion:^{ }];实现其代理方法：
-(void)assetPickerController:(YSHYAssetPickerController*)pickerdidFinishPickingAssets:(NSArray*)assets{
[dataSource removeAllObjects]; [dataSource addObjectsFromArray:assets]; [self CreatImageViewWithImags:dataSource];}
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