Hello, I would like to implement the function of unsubscribe FCM topics that I was subscribing to when I received a specific push from the server. It was implemented through "willPresent" when the app was running, but I don't know how to do it when the app is not running. I activated the 'Background fetch' and 'Remote Notifications' options for now. const message = { notification: { title: 'FCM Topic UnSubscribe', body: 'TestTestTest', }, data: { payload: JSON.stringify(payloadJson) }, apns: { payload: { aps: { sound: 'default', 'mutable-content': 1, 'content-available': 1 } } }, topic: 'unsubscribe_topic', }; Test node code Payload contains the type of topic you want to unsubscribe from. And I added a function to receive push from didReceiveRemoteNotification and handle logic. But this doesn't work. Does Remote Notification (content-available) not work in iOS's Not running and Suspended state?? I'm also using the Notification Service Extension, is this related to it?

Hi, I'm using CloudKit to create an app that backs up and records your data to iCloud. Here's what I'm unsure about: I understand that the 'CloudKit Dashboard' has 'Security Roles'. I thought these were meant to set permissions for accessing and modifying users' data, but I found there was no change even when I removed all 'Permissions' from 'Default Roles'. Can you clarify? I'd like to know what _world, _icloud, and _creator in Default Roles mean respectively. I would like to know what changes the creation, read, and write permissions make. Is it better to just use the default settings? Here's what I understand so far: Default Roles: _world: I don't know _icloud: An account that is not my device but is linked to my iCloud _creator: My Device Permissions: create: Create data read: Read data write: Update and delete data. I'm not sure if I understand this correctly. Please explain.

Hello. I'm going to create an app that supports purchase records. SwiftData was used to implement storage, backup, and restoration functions at once. One question is whether paging is necessary. When you receive data from a server, you usually implement paging to send and receive data efficiently. In the case of Realm, I know that it uses Lazy data, so I know that there is no need for paging. What about SwiftData? Can the number of data affect performance??

Can i use c++ library with c library in swift app project Hello. I want to use a C++ library in my Swift app project. First, our company has an internal solution library. When built, it generates a Static Library in '.a' format, and we use it by connecting the library's Header to the App_Bridging_Header. There's no problem with this part. However, the new feature now includes C++. It also generates a Static Library in '.a' format. So, I tried to use the same method and created an App_Bridging_Header. But an error occurs, and I can't proceed. The first error occurs in the library file: 'iostream' file not found The second error occurs in the App_Bridging_Header: failed to emit precompiled header '/Users/kimjitae/Library/Developer/Xcode/DerivedData/ddddd-glmnoqrwdrgarrhjulxjmalpyikr/Build/Intermediates.noindex/PrecompiledHeaders/ddddd-Bridging-Header-swift_3O89L0OXZ0CPD-clang_188AW1HK8F0Q3.pch' for bridging header '/Users/kimjitae/Desktop/enf4/ddddd/ddddd/ddddd-Bridging-Header.h' Our library is developed in C++ using Xcode, and there's no problem when we run and build just the library project. The build succeeds, and the '.a' file is generated correctly. However, when we try to connect it with the app, the above problems occur. Could there be a problem because we also need to use the existing C library alongside this? The build is successful in an app project created with Objective-C.

I'm using SwiftData, and I'm using iCloud's CloudKit feature to back up my data. The problem here is that once you start backing up your data, you can't erase it completely. Even if the user adds 4 data and erases 4 again, I'm using about 2.5kb. I don't know how the user using the app will accept this. I'm trying to provide the user with the ability to erase data at once, what should I do??