再次打开，如何保持选择状态

[hengchengfei]

比如，选择了3张照片，关了后，再次选择时，怎么让这3张保持选择状态

[KIDXO]

自定义ALAssetsLibrary，用下面替换DNImagePicker里的ALAssetsLibrary

//
// SBAssetsLibrary.h
// SocialBank
//
// Created by NULL on 16/4/7.
// Copyright © 2016年 NULL. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <AssetsLibrary/AssetsLibrary.h>

@interface SBAssetsLibrary : NSObject

• (ALAssetsLibrary *)sharedAssetsLibrary;

@EnD

//
// SBAssetsLibrary.m
// SocialBank
//
// Created by NULL on 16/4/7.
// Copyright © 2016年 NULL. All rights reserved.
//

#import "SBAssetsLibrary.h"

@implementation SBAssetsLibrary

• (ALAssetsLibrary *)sharedAssetsLibrary
  {
  static ALAssetsLibrary *assetsLibrary = nil;
  static dispatch_once_t once;
  dispatch_once(&once, ^{
  assetsLibrary = [[ALAssetsLibrary alloc] init];
  });
  return assetsLibrary;
  }

@EnD