在iphone中使用UIActivityviewController时，exc_bad_access代码= 1地址= 0 * 0

Question

这是我用来分享图片的代码vaia facebook：

NSArray *array = [NSKeyedUnarchiver unarchiveObjectWithData:archive];
UIActivityViewController *activityVC = 
    [[UIActivityViewController alloc] initWithActivityItems:array 
                                      applicationActivities:nil]; 
activityVC.excludedActivityTypes = @[UIActivityTypeAssignToContact, 
                                     UIActivityTypePrint,
                                     UIActivityTypePostToTwitter,
                                     UIActivityTypePostToWeibo,
                                     UIActivityTypeMail,
                                     UIActivityTypeCopyToPasteboard,
                                     UIActivityTypeSaveToCameraRoll];
[self presentViewController:activityVC animated:YES completion:nil];

这在模拟器中工作正常，但是当我在真正的ipad 3上测试时，它强制关闭说错误

exc_bad_access code=1 address=0*0

在这一行

activityVC.excludedActivityTypes = @[UIActivityTypeAssignToContact, 
                                         UIActivityTypePrint,
                                         UIActivityTypePostToTwitter,
                                         UIActivityTypePostToWeibo,
                                         UIActivityTypeMail,
                                         UIActivityTypeCopyToPasteboard,
                                         UIActivityTypeSaveToCameraRoll];

任何人都能找到我在这里错过的东西吗？

编辑部分：

我检查了所有内容，array不是零。如果我注释掉activityVc.exclude....

行

然后强制关闭并说

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present a nil modal view controller

Answer 1

你检查过你的iPad吗？

UIActivityViewController必须有 ios 6 或以上版本

您可以使用

查看版本

   NSString *reqSysVer = @"6.0";
   NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
    if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
      {

       //use UIActivityViewController here
      }