Read main application's mmkv values from Notification Service (IOS) about react-native-mmkv HOT 7 CLOSED

Hey, you need to use an app group in order to get it working, see the following:

https://github.com/mrousavy/react-native-mmkv#app-groups
https://github.com/Tencent/MMKV/wiki/iOS_tutorial#configuration (the multi-process accessing part)

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@CodeByTarun
Still no luck.
I created app group, added my app and notification service to it, changed both initialization calls in AppDelegate.m and NotificationService.m to

  NSString *myGroupID = @"group.com.ttyxx";
  // the group dir that can be accessed by App & extensions
  NSString *groupDir = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:myGroupID].path;
  [MMKV initializeMMKV:nil groupDir:groupDir logLevel:MMKVLogInfo];

I also added following code to AppDelegate.m to be sure I could read this property from JS layer.

  [mmkv setString:@"\"HELLO\"" forKey:@"string"];

It works.

But still no luck with Notification service

NSString *value = [mmkv getStringForKey:@"string"];
    NSLog(@"MMKV VALUE IS: %@", value);

value is still return nil.

NSArray *keys = [mmkv allKeys];

keys has 0 elements

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I changed Debug MMKV's log level to MMKVLogDebug
Both processes log the same folder
AppDelegate Log:

[I] <libMMKV.mm:132::+[MMKV initializeMMKV:groupDir:logLevel:]> groupDir: /private/var/mobile/Containers/Shared/AppGroup/9513AAB0-195C-4AF1-9C44-576A77E86427/mmkv

NotificationService Log:

[I] <libMMKV.mm:132::+[MMKV initializeMMKV:groupDir:logLevel:]> groupDir: /private/var/mobile/Containers/Shared/AppGroup/9513AAB0-195C-4AF1-9C44-576A77E86427/mmkv

Obviously the folder is the same. I have no clue what to do next.

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Weird, I think AppGroups are supposed to make that work. Maybe create an issue in the native MMKV repo if this is actually an actual MMKV bug?

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Did you add AppGroup to Info.plist?

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I think this is a duplicate of #622

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@mrousavy

Did you add AppGroup to Info.plist?

Yes I did.

I think this is a duplicate of #622

Thank you for your tip, I'll check it.

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