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Optimizing React Native App for Fast API Calls Using Expo
I'm developing a grocery delivery app using React Native and Expo. The app uses Node.js and MongoDB for the backend APIs. While integrating dashboard APIs, I've noticed a delay in API response times, particularly with the product filtering and sorting features. I'm looking for best practices or tools to optimize API calls in React Native, especially with Expo. Additionally, are there ways to implement efficient caching for repeated queries? Any advice or recommendations would be greatly appreciated!
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320
Dec ’24
Crash report from user unexpectedly looks like beta app
According to this page: https://developer.apple.com/documentation/xcode/interpreting-the-json-format-of-a-crash-report the storeInfo element of a JSON crash log may contain a deviceIdentifierForVendor element, but quote "This field is only present for TestFlight builds of an app". A user has just sent me a crash report which contains this key, but this isn't a testflight build. The suspicion is of course that the app is "cracked" in some way, but having interacted with the user for some time I think this is unlikely. He has had various issues with the app, affecting multiple devices; I have been wondering if there is something wrong with his Apple account. The docs also say that this "replaces the CrashReporter Key field", yet this crash report contains both. So my question for other developers: if you have any .ips crash logs, obtained from non-testflight users of your apps, please could you grep them for deviceIdentifierForVendor and let me know what you find. If any Apple people have any clues about how this could innocently end up in a crash report, please let me know. Maybe it's a documentation bug?
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387
Dec ’24
Moving files to local package not possible in Xcode 16?
Hi! Trying to move some code into a local package - with Xcode 16 I am unable to move my code to the new package as drag and drop will always result in a copy. This contradicts the demo in the original intro session at WWDC19, and also the current documentation.. Of course I can delete the original files but this feels somewhat wrong... Am I missing something? Did the behaviour of moving files in the Project navigator change in the recent Xcode releases?
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307
Dec ’24
Problema con SPM y pods en xcode 16 y macos sequoia 15.1.1
When I try to install packages through spm it doesn't find the packages.swift file, and with pods I have problems with Foundation. Trying to install Firebase shows that many pods have issues with double quotes. I don't know if it's my PC using everything updated or what, but I'm having a lot of problems and I haven't been able to reconcile my first application. I don't want to give up, and I would like some advice, since you have managed it, I would appreciate some help. I have followed tutorials, cases of people with similar problems, but it always throws some error. My pc is mac m1
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444
Dec ’24
No Respond on Apple Developer Program Request
Hello, I have been trying to enroll in Apple Developer Program. I have sent request multiple times for the last few months and never recieved the answer, even though email notification I recieved and the website says that my request should be processed within 2 days. I have also contacted support 2 days ago but have not recieved any answers. Could someone advise me on appropriate steps so I can resolve this issue? Thank you so much.
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Dec ’24
How do I set hardware speed in my Ethernet driver?
PLATFORM AND VERSION iOS Development environment: Xcode 15.4, macOS Sonoma 14.5 Run-time configuration: macOS Sonoma 14.5 DESCRIPTION OF PROBLEM Hi, I'm on DriverKit 21.0. I'm looking for a system call (that isn't deprecated) in my driver to set the Ethernet link speed manually. Normally a user would set it by System Settings... -> Network -> -> Details -> Hardware -> Configure (Manually), and then Speed (choose the link speed). With my driver, when I configure for manual, no link speeds show up. I want to know how to populate the speeds (1000BaseT, etc.) so a user can select one. What system APIs are used for this? I can't find much detail in the documentation. I do see Instance Methods for some related things like getSupportedMediaArray, but most of these newer methods don't have details in the documentation to guide me on what they actually do. Thanks in advance...
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430
Nov ’24
Code=4099 "Connection invalidated to streaming unzip service."
Hello, I am new to be using on-demand resources in my project, it’s a wonderful idea and concept I have to say! Kudos to whoever invented this! I am facing one problem that I couldn't solve so far: whenever I switch between the TestFlight / App Store / local Xcode builds I receive this error message: Code=4099 "Connection invalidated to streaming unzip service." Does anyone know what this means and how I can resolve it? I saw this other thread where it was recommended to delete & reinstall the app, but that is not always feasible because then all user data from the app is lost as well: https://forums.developer.apple.com/forums/thread/707070 Thanks a lot for any hints!
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Dec ’24
Device UDID duplicated 6 times in Enterprise Account Devices list
Sometime since July 2024 the list of devices in our Enterprise Account is showing the same device and UDID 6 times. Looking at the DATE REGISTERED field it is apparent that each instance of the device represents the 'old' device that should have been 'deleted' when the annual device reset was actioned. The date registered field shows dates with 2019, 2020, 2021, and so till 2024 (most recent). I have 'disabled' two of the entries to see what happens, and those instances were disabled as expected without impacting the other instances. However, when attempting a re-enable of them, an error throws saying that they cant be enabled because that UDID already exists - obviously the other instances. For now, I have left 4 active duplicates in place, and the 2 disabled ones as they are, and plan to deal with this again - if it re-occurs in 2025. It does not seem to have impacted provisioing profiles - so will leave well enough alone. I am sure if I disable all of them, I will not be able to re-enabled any of them. Is this a know issue? Is this the best strategy? - ie, wait till device reset next year and hope issue is resolved. This post had similar issue, in 2023, but no response Forum Post 733264
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445
Nov ’24
Unable to Access Team ID and Account Login Issues
Hello everyone, I am a developer and admin on App Store Connect, and I'm experiencing some issues with my account. Here’s a summary of the situation: Account Email: [Redacted] Team ID: [Redacted] Upon visiting the resources page, I encountered a popup stating: Unable to find a team with the given Team ID to which you belong. Please contact Apple Developer Program Support. When I sought assistance from a account holder, they attempted to log in using the account email but were unable to access it, despite entering the correct credentials multiple times. The login page prompted them to enter the email or phone number and password for the Apple account. Currently, I admin can log into App Store Connect, but the account holder is unable to access their account. We are facing difficulties because the Team ID appears to be disabled or unavailable in Xcode. We still have an Individual Developer subscription, but we intend to upgrade to an Organization level. I submitted a request for "Organization Membership" earlier this month. After contacting Apple support helpline multiple times, we received inconsistent responses, including suggestions to create a new account or contact developer support via email. Our main issues are: The account holder is unable to log in. The Team ID is not functioning. If we cannot continue with the individual account, we are open to using a different email for the account holder, as he handle sensitive information such as verification and payments. I have already submitted my request and am opening this thread in hopes of finding a speedy solution and guidance. I've seen multiple threads on this issue, but none have provided a resolution. Any guidance or suggestions on how to resolve these issues would be greatly appreciated! Thank you!
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806
Nov ’24
Unstable `archive` for `Debug` configuration (ld: file cannot be open()ed, errno=2)
We have a relatively big iOS-only project with around 80 build targets from swift packages (local features and external project dependencies) and Xcode 15.4 (originally, migrated to 16.0). Project compiles and runs great, but xcodebuild archive will fail 4 out of 5 tries with this: ld: file cannot be open()ed, errno=2 path=/opt/builds/fLLyxmhG/0/myapp/Build/Intermediates.noindex/ArchiveIntermediates/myapp (Development Flow)/BuildProductsPath/Debug-iphonesimulator/Account.o in '/opt/builds/fLLyxmhG/0/myapp/Build/Intermediates.noindex/ArchiveIntermediates/myapp (Development Flow)/BuildProductsPath/Debug-iphonesimulator/Account.o' Where Account.o is an end product of one of our feature packages linking to an .app itself. This error is not tied to this concrete package/product (which should be compiling almost last relative to build graph) and could appear mid-build in between our service layer packages. It seems (and is approved by Xcode timeline for .app archive log) that module dependency is compiled later than module itself and linker just cant find its dependency object files. The scheme is: Module A (dependency itself) Module B (needs module A) And with build order expected (???) to be A (first) -> B we're getting the B -> A. Error appears only when archiving for Debug configuration, archiving the same end-target with Release configuration results in stable passes 10 out of 10 tries. Setting identical parameters in Build Settings tab for both configurations of a target is not giving any effect. Our current fix is choosing Manual order in scheme Build order setting. Everything works as expected, but i guess it's not optimal 🤧 Sadly can't provide test project, but anything else — welcome.
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428
Dec ’24
Seeking advice on building a multiplatform PDF viewer app
Hi everyone, I’m planning to develop a cross-platform PDF viewer app for iOS and macOS that will read PDFs from local storage and cloud services (Google Drive, iCloud, WorkDrive, etc.). The app should be read-only and display both the PDF content and its metadata (author, title, creation date, etc.). Key Features: View PDFs: Local and remote (cloud storage integration). Display metadata: Title, author, page count, etc. Cloud integration: Google Drive, iCloud, Zoho WorkDrive, etc. Read-only mode: No editing features, just viewing. Questions: Xcode Template: Should I use the Document App or Generic App template for this? PDF Metadata: Any built-in libraries for extracting PDF metadata in a read-only app? Performance: Any advice or documentation on handling large PDFs or cloud fetching efficiently? Thanks in advance for any advice or resources!
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Nov ’24