Problem during IOS simulator launch.

[EuHigorBarbosa]

I've tried to launch on IOS simulator the record_mp3 package on a flutter original exemple with no modifications. Just put the package on pubspec.yml...and run. But then it show an error:

Launching lib/main.dart on iPhone 8 in debug mode...
lib/main.dart:1
Xcode build done. 13,6s
Failed to build iOS app
Error output from Xcode build:
↳
** BUILD FAILED **
Xcode's output:
↳
/Applications/flutter/.pub-cache/hosted/pub.dartlang.org/record_mp3-3.0.0/ios/Classes/SwiftRecordMp3Plugin.swift:22:9: warning: result of 'SwiftRecordMp3Plugin' initializer is unused
SwiftRecordMp3Plugin(registrar: registrar)
^ ~~~~~~~~~~~~~~~~~~~~~~
/Applications/flutter/.pub-cache/hosted/pub.dartlang.org/record_mp3-3.0.0/ios/Classes/SwiftRecordMp3Plugin.swift:22:9: warning: result of 'SwiftRecordMp3Plugin' initializer is unused
SwiftRecordMp3Plugin(registrar: registrar)
^ ~~~~~~~~~~~~~~~~~~~~~~
ld: in /Applications/flutter/.pub-cache/hosted/pub.dartlang.org/record_mp3-3.0.0/ios/Classes/Fat-Lame/lib/libmp3lame.a(lame.o), building for iOS Simulator, but linking in object file built for iOS, for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
note: Using new build system
note: Building targets in parallel
note: Planning build
note: Constructing build description
warning: no rule to process file '/Applications/flutter/.pub-cache/hosted/pub.dartlang.org/record_mp3-3.0.0/ios/Classes/Fat-Lame/lib/libmp3lame.a' of type 'archive.ar' for architecture 'arm64' (in target 'record_mp3' from project 'Pods')
warning: no rule to process file '/Applications/flutter/.pub-cache/hosted/pub.dartlang.org/record_mp3-3.0.0/ios/Classes/Fat-Lame/lib/libmp3lame.a' of type 'archive.ar' for architecture 'x86_64' (in target 'record_mp3' from project 'Pods')
Could not build the application for the simulator.
Error launching application on iPhone 8.
Exited (sigterm)

Here is my pubspec.yaml =======
name: test_recorder_mp3
description: A new Flutter project.

publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0+1

environment:
sdk: ">=2.15.1 <3.0.0"

dependencies:
flutter:
sdk: flutter
record_mp3: ^3.0.0

cupertino_icons: ^1.0.2

dev_dependencies:
flutter_test:
sdk: flutter

flutter_lints: ^1.0.0

flutter:

uses-material-design: true

Here is some information about my system:

Simullator:
Version 12.4 (940.20)
SimulatorKit 597.13.0.1
CoreSimulator 732.18.6
Iphone 8 - IOS 14.4

Here my flutter doctor:
[✓] Flutter (Channel stable, 2.8.1, on Mac OS X 10.15.7 19H1615 darwin-x64, locale pt-BR)
⢿[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
[!] Xcode - develop for iOS and macOS (Xcode 12.4)
! Flutter recommends a minimum Xcode version of 13.0.0.
Download the latest version or update via the Mac App Store.
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.65.2)
[✓] Connected device (3 available)

HOW CAN I SOLVE THIS?

[pratik1311]

@EuHigorBarbosa Did you get any solution ?

[renik8484]

@EuHigorBarbosa @pratik1311

Step : 1 Go to Xcode and Select pods from left menu

Step : 2 Goto record_mp3 and add arm64 to excluded architecture as shown in image.

Now you can successfully run the app

Note : please check this settings again if you are getting same error again.