Flutter - Building for iOS, but the linked and embedded framework 'App.framework' was built for iOS Simulator

Question

After updating to Catalina 10.15.4 beta with Xcode 13.4 beta, which also updated Simulator to 13.4 (921.4).

The application compiles and runs correctly on a physical

Answer 1

After several days trying to find a solution to test the Flutter app on iOS device, I finally found this:

flutter clean
flutter build ios

-Open xCode and run app on your device.

Answer 2

In my case, it works only simulator(debug). if you want to deploy your app on the app store(release) i highly recommend you to upgrade flutter version using

flutter version v1.15.17

otherwise you would encounter crashed app with white screen.

just upgrade flutter version then all things work well

Answer 3

Updated to Xcode 11.4. Ios 13.4, Iphone X. App just fetches data using API. App started on white screen and then finally crashes, both on simulator and device.

I followed the offical guide (I also rm -rf ios/Flutter/App.framework) flutter.dev/docs/development/ios-project-migration. I ran several times flutter clean

I also tried deleting Pods/ folder and Podfile.lock, then reinstalling using pod install in the ios folder.

As I am using async data I also added as 1st line in main()

WidgetsFlutterBinding.ensureInitialized();

No help, app did not started either simulator.

Then I removed ios/ and android/ folders. After that in project folder I ran command flutter create . that regenerates mentioned folders.

After this my app started fine both on simulator and on device. I hope this would be help to others. NOTE!! if you have done any modifications manually to those folders please take backup or commit beforehand.