PFAddUniqueOperation - 部分用户的系统性崩溃

Question

我发布了我的 iOS 应用程序的更新，据我所知，它不会改变我们处理推送通知的方式。

但是，我们的一部分用户报告在启动时系统崩溃。 Fabric 告诉我应用程序崩溃是由于：

Fatal Exception: NSInternalInconsistencyException
Operation is invalid after previous operation.

并显示当我在方法 updateAgenciesChannels 中将用户订阅到默认推送频道时会发生这种情况：

NSArray *agencies = [NSArray arrayWithObjects:@"channelA",@"channelB", nil];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
PFInstallation *currentInstallation = [PFInstallation currentInstallation];

for(NSString *agency in agencies)
{
    NSString *agencyString = [@"a-" stringByAppendingString:agency];
    BOOL agencyState = [defaults boolForKey:agencyString];
    if(agencyState)
        [currentInstallation addUniqueObject:agencyString
                                      forKey:@"channels"];
    else
        [currentInstallation removeObject:agencyString
                                      forKey:@"channels"];

    [currentInstallation saveInBackground];
}

好像和iOS版本没有关系（都是9.1.3崩溃的，但是很多9.1.3的用户完全没问题），也不是好像跟设备类型有关
对于这部分用户，崩溃是系统性的，在所有启动时，甚至在 deleting/installing 再次应用程序之后也是如此

这是完整的崩溃日志之一：

Fatal Exception: NSInternalInconsistencyException
0  CoreFoundation                 0x180ffee38 __exceptionPreprocess
1  libobjc.A.dylib                0x180663f80 objc_exception_throw
2  CoreFoundation                 0x180ffed80 -[NSException initWithCoder:]
3  NextRide                       0x1001c012c -[PFAddUniqueOperation mergeWithPrevious:] (PFFieldOperation.m:277)
4  NextRide                       0x1001e1240 -[PFObject(Private) performOperation:forKey:] (PFObject.m:1172)
5  NextRide                       0x1001e83dc -[PFObject addUniqueObjectsFromArray:forKey:] (PFObject.m:2170)
6  NextRide                       0x1001e8318 -[PFObject addUniqueObject:forKey:] (PFObject.m:2166)
7  NextRide                       0x1000ac4c8 +[NRNPush updateAgenciesChannels] (NRNPush.m:54)
8  NextRide                       0x1000ac2dc +[NRNPush updateDefaultChannels] (NRNPush.m:35)
9  NextRide                       0x100083b10 -[AppDelegate application:didFinishLaunchingWithOptions:] (AppDelegate.m:86)
10 UIKit                          0x1861be8a8 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:]
11 UIKit                          0x1863ee094 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:]
12 UIKit                          0x1863f2500 -[UIApplication _runWithMainScene:transitionContext:completion:]
13 UIKit                          0x1863ef674 -[UIApplication workspaceDidEndTransaction:]
14 FrontBoardServices             0x18299f7ac __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
15 FrontBoardServices             0x18299f618 -[FBSSerialQueue _performNext]
16 FrontBoardServices             0x18299f9c8 -[FBSSerialQueue _performNextFromRunLoopSource]
17 CoreFoundation                 0x180fb5124 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
18 CoreFoundation                 0x180fb4bb8 __CFRunLoopDoSources0
19 CoreFoundation                 0x180fb28b8 __CFRunLoopRun
20 CoreFoundation                 0x180edcd10 CFRunLoopRunSpecific
21 UIKit                          0x1861b7834 -[UIApplication _run]
22 UIKit                          0x1861b1f70 UIApplicationMain
23 NextRide                       0x1000d054c main (main.m:28)
24 libdispatch.dylib              0x180a7a8b8 (Missing)

Answer 1

事实证明，当多次调用此方法时，如果用户已经订阅（"unique object" 已经在数组中），我可能会尝试将用户订阅到频道，并尝试取消订阅用户如果他还没有被订阅到一个频道（删除不在数组中的对象）

PFAddUniqueOperation - 部分用户的系统性崩溃

PFAddUniqueOperation - Systematic crash for a subset of users

apple-push-notifications

ios

parse-platform