资产库在日志中没有任何消息时崩溃应用程序

Question

这是登录组织者

ocesses
     Name                                           rpages       recent_max       [reason]          (state)

      MobileMail          1557             1557         [vm]         (resume) (continuous)
     MobilePhone          1479             1479         [vm]         (resume) (continuous)
            tccd           318              320         [vm]         (daemon)
         Testare          2293             2293         [vm]         (frontmost) (resume)
            ptpd          1350             1350                      (daemon)
     dataaccessd          1589             1589                      (daemon)
      aosnotifyd           512              512                      (daemon)
    mediaserverd         12077            12077                      (daemon)
         assetsd          1170             1170                      (daemon)
           wifid           773              773                      (daemon)
   iaptransportd           266              266                      (daemon)
        profiled           592              592                      (daemon)
       locationd          1373             1373                      (daemon)
         syslogd           185              185                      (daemon)
     SpringBoard          7838             7838                     
      backboardd          5776             5776                      (daemon)
        BTServer           498              498                      (daemon)
         imagent           668              668                      (daemon)
         configd           741              741                      (daemon)
       lockdownd           353              353                      (daemon)
          powerd           192              192                      (daemon)
   mDNSResponder           294              294                      (daemon)
   fairplayd.N42           166              166                      (daemon)
  UserEventAgent           720              720                      (daemon)
       securityd           159              160                      (daemon)
           amfid           219              219                      (daemon)
     debugserver             0                0                      (daemon)
   syncdefaultsd           459              459                      (daemon)
         lockbot           475              475                      (daemon)
springboardservi             0                0                      (daemon)
       CVMServer            89               89                      (daemon)
notification_pro           161              161                      (daemon)
            afcd           157              157                      (daemon)
filecoordination           214              214                      (daemon)
       distnoted           141              141                      (daemon)
            apsd           438              438                      (daemon)
      aggregated           109              109                      (daemon)
        networkd           215              215                      (daemon)
       fseventsd           277              277                      (daemon)
      CommCenter          1760             1760                      (daemon)
         notifyd           226              226                      (daemon)
     ReportCrash           331              333                      (daemon)

**End**

没有线程高位。 这是代码

   void (^assetEnumerator)(ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
        if(result != NULL) {
            NSLog(@"See Asset: %@", result);
            NSLog(@"Index: %d", index);
            ALAssetRepresentation *rep = result.defaultRepresentation;
            NSLog(@"URL: %@", rep.url);
            UIImage *image = [UIImage imageWithCGImage:rep.fullScreenImage];
            [self performSelectorInBackground:@selector(selectImage:) withObject:image];       
         }
    };

    void (^assetGroupEnumerator)(ALAssetsGroup *, BOOL *) =  ^(ALAssetsGroup *group, BOOL *stop) {
        if(group != nil) {
            NSLog(@"GRUP Desc:%@",[group valueForProperty:ALAssetsGroupPropertyType]);
            NSLog(@"GRUP Desc:%@",group.description);
            NSNumber *type = (NSNumber *)[group valueForProperty:ALAssetsGroupPropertyType];
            NSLog(@"GRUP Desc:%@",NSStringFromClass([type class]));
            int tip = [type intValue];
            [group setAssetsFilter:[ALAssetsFilter allPhotos]];
            [group enumerateAssetsUsingBlock:assetEnumerator];
        }
    };

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    [library enumerateGroupsWithTypes:ALAssetsGroupAll
                           usingBlock:assetGroupEnumerator
                         failureBlock: ^(NSError *error) {
                             NSLog(@"Failure");
                         }];

好像我不使用这行UIImage * image = [UIImage imageWithCGImage：rep.fullScreenImage];并且后面的行正在进行枚举 所有资产。如果我尝试获取图像或仅获取元数据，它会在某些时候崩溃。问题是没有XCode的崩溃向我显示线程或原因。左窗格中未显示任何内容。使用分析器运行它会向我显示应用程序的2MB稳定使用率。它似乎没有内存泄漏。

我尝试了不同的方法但仍然崩溃而没有任何错误消息。