<pre>
//獲取相冊(cè)的所有圖片

• (void)reloadImagesFromLibrary
  {
  self.images = [[NSMutableArray alloc] init];
  dispatch_async(dispatch_get_main_queue(), ^{
  @autoreleasepool {
  ALAssetsLibraryAccessFailureBlock failureblock = ^(NSError *myerror){
  NSLog(@"相冊(cè)訪問(wèn)失敗 =%@", [myerror localizedDescription]);
  if ([myerror.localizedDescription rangeOfString:@"Global denied access"].location!=NSNotFound) {
  NSLog(@"無(wú)法訪問(wèn)相冊(cè).請(qǐng)?jiān)?設(shè)置->定位服務(wù)'設(shè)置為打開(kāi)狀態(tài).");
  }else{
  NSLog(@"相冊(cè)訪問(wèn)失敗.");
  }
  };

        ALAssetsGroupEnumerationResultsBlock groupEnumerAtion = ^(ALAsset *result, NSUInteger index, BOOL *stop){
            if (result!=NULL) {
                 
                if ([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
                     
                    NSString *urlstr=[NSString stringWithFormat:@"%@",result.defaultRepresentation.url];//圖片的url
                    [self.images addObject:urlstr];
                    //NSLog(@"urlStr is %@",urlstr);
                    //result.defaultRepresentation.fullScreenImage//圖片的大圖
                    //result.thumbnail                             //圖片的縮略圖小圖
                    NSRange range1=[urlstr rangeOfString:@"id="];
                    NSString *resultName=[urlstr substringFromIndex:range1.location+3];
                   resultName=[resultName stringByReplacingOccurrencesOfString:@"&ext=" withString:@"."];//格式demo:123456.png
                    
                }
            }
        };
         
        ALAssetsLibraryGroupsEnumerationResultsBlock libraryGroupsEnumeration = ^(ALAssetsGroup* group, BOOL* stop){
             
            if (group == nil)
            {
                 
            }
             
            if (group!=nil) {
                NSString *g=[NSString stringWithFormat:@"%@",group];//獲取相簿的組
                NSLog(@"gg:%@",g);//gg:ALAssetsGroup - Name:Camera Roll, Type:Saved Photos, Assets count:71
                 
                NSString *g1=[g substringFromIndex:16 ] ;
                NSArray *arr=[[NSArray alloc] init];
                arr=[g1 componentsSeparatedByString:@","];
                NSString *g2=[[arr objectAtIndex:0] substringFromIndex:5];
                if ([g2 isEqualToString:@"Camera Roll"]) {
                    g2=@"相機(jī)膠卷";
                }
                NSString *groupName=g2;//組的name
                 
                [group enumerateAssetsUsingBlock:groupEnumerAtion];
            }
             
        };
         
        ALAssetsLibrary* library = [[ALAssetsLibrary alloc] init];
        [library enumerateGroupsWithTypes:ALAssetsGroupAll
                               usingBlock:libraryGroupsEnumeration
                             failureBlock:failureblock];
    }
  

  });
  }
  </pre>