Could not build the precompiled application for the device in IOS.

[oppq1234]

As title, when I tried to build my flutter project, it showed the message and error:

Xcode's output:
↳
    Command CompileSwift failed with a nonzero exit code
    .
    .
    .    
   Command CompileSwift failed with a nonzero exit code
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:52:95: error: cannot find type 'AKSampleDescriptor' in scope
        func addSampleToSampler(trackIndex: track_index_t, samplePath: String, isAsset:
        Bool, sd: AKSampleDescriptor, completion: @escaping (Bool) -> Void) {
                                                                                ^~~~~~~~~~
                                                                                ~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:21:9: error: cannot find 'AKSampler' in scope
            AKSampler.register()
            ^~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:22:9: error: cannot find 'AKSettings' in scope
            AKSettings.enableLogging = true
            ^~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:40:39: error: cannot find 'AKSampler' in scope
            AVAudioUnit.instantiate(with: AKSampler.ComponentDescription, options: []) {
            avAudioUnit, err in
                                          ^~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:55:66: error: cannot find type 'AKSamplerAudioUnit' in scope
                    if let akSamplerAU = avAudioUnit.auAudioUnit as? AKSamplerAudioUnit {
                                                                     ^~~~~~~~~~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:59:39: error: cannot find 'AKSampleFileDescriptor' in scope
                                    from: AKSampleFileDescriptor(sampleDescriptor: sd,
                                    path: buffer.baseAddress))
                                          ^~~~~~~~~~~~~~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:64:44: error: cannot find 'AKAudioFile' in scope
                                let file = try AKAudioFile(forReading: url)
                                               ^~~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:68:74: error: missing argument label 'arrayLiteral:' in call
                                var flattened = Array(file.floatChannelData!.joined())
                                                                             ^
                                                      arrayLiteral: 
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:70:66: error: cannot find 'AKSampleDataDescriptor' in scope
                                    akSamplerAU.loadSampleData(from:
                                    AKSampleDataDescriptor(sampleDescriptor: sd,
                                                                     ^~~~~~~~~~~~~~~~~~~~~
                                                                     ~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:95:62: error: cannot find type 'AKSamplerAudioUnit' in scope
                if let akSamplerAU = avAudioUnit.auAudioUnit as? AKSamplerAudioUnit {
                                                                 ^~~~~~~~~~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/SwiftFlutterSequencerPlugin.swift:109:18: error: cannot find 'AKSampleDescriptor'
    in scope
            let sd = AKSampleDescriptor(
                     ^~~~~~~~~~~~~~~~~~
    /usr/local/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_sequencer-0.3.2/ios/Clas
    ses/CocoaEngine.swift:52:95: error: cannot find type 'AKSampleDescriptor' in scope
        func addSampleToSampler(trackIndex: track_index_t, samplePath: String, isAsset:
        Bool, sd: AKSampleDescriptor, completion: @escaping (Bool) -> Void) {
                                                                                ^~~~~~~~~~
                                                                                ~~~~~~~~
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Analyzing workspace
    note: Constructing build description
    note: Build preparation complete

Could not build the precompiled application for the device.

Error launching application on device. 

I have tried so many ways to solve the problem but had no idea. Should I have to install some extensions or change some settings?

[mikeperri]

Looks like it can't find AudioKit for some reason. It should be installed by CocoaPods.

What command are you running to build? Also, are you on Apple Silicon?

I tried to reproduce this on my Intel Mac by cloning a fresh copy of the repo, like this, and everything looks fine:

git clone https://github.com/mikeperri/flutter_sequencer.git

Cloning into 'flutter_sequencer'...
remote: Enumerating objects: 475, done.
remote: Counting objects: 100% (475/475), done.
remote: Compressing objects: 100% (273/273), done.
remote: Total 475 (delta 195), reused 444 (delta 165), pack-reused 0
Receiving objects: 100% (475/475), 4.09 MiB | 13.03 MiB/s, done.
Resolving deltas: 100% (195/195), done.

cd flutter_sequencer/example 

flutter build ios

Running "flutter pub get" in example...                            704ms
Building com.example.flutterSequencerExample for device (ios-release)...
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the App Store.
Automatically signing iOS for device deployment using specified development team in Xcode project: E92EJTVEYS
Running pod install...                                              6.1s
Running Xcode build...                                                  
 └─Compiling, linking and signing...                         9.1s
Xcode build done.                                           58.9s
Built /Users/mp/dev/temp/flutter_sequencer/example/build/ios/iphoneos.

[oppq1234]

Looks like it can't find AudioKit for some reason. It should be installed by CocoaPods.

What command are you running to build? Also, are you on Apple Silicon?

I tried to reproduce this on my Intel Mac by cloning a fresh copy of the repo, like this, and everything looks fine:

git clone https://github.com/mikeperri/flutter_sequencer.git

Cloning into 'flutter_sequencer'...
remote: Enumerating objects: 475, done.
remote: Counting objects: 100% (475/475), done.
remote: Compressing objects: 100% (273/273), done.
remote: Total 475 (delta 195), reused 444 (delta 165), pack-reused 0
Receiving objects: 100% (475/475), 4.09 MiB | 13.03 MiB/s, done.
Resolving deltas: 100% (195/195), done.

cd flutter_sequencer/example 

flutter build ios

Running "flutter pub get" in example...                            704ms
Building com.example.flutterSequencerExample for device (ios-release)...
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the App Store.
Automatically signing iOS for device deployment using specified development team in Xcode project: E92EJTVEYS
Running pod install...                                              6.1s
Running Xcode build...                                                  
 └─Compiling, linking and signing...                         9.1s
Xcode build done.                                           58.9s
Built /Users/mp/dev/temp/flutter_sequencer/example/build/ios/iphoneos.

I use Intel macOS to run and build with flutter command, and first, I install flutter_sequencer with pubspec.yaml but It can not work. I have tried the example in your Github, it works, my project does, too. I think that maybe the problem is in the CocoaPods. It looks like it can't be found AudioKit, but strangely, I saw the error, It only showed type error, import AudioKit did not happen error(as the Xcode's output).

[mikeperri]

Hey, can you try again? I just published a new version of the library which uses a different SFZ player library instead of AudioKit.

[oppq1234]

I try both Github example and Cocoapods download, neither of two ways can not use. Here is the output:

Xcode's output:
↳
    /bin/sh: /Users/mp/dev/flutter/packages/flutter_tools/bin/xcode_backend.sh: No such
    file or directory
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Analyzing workspace
    note: Constructing build description
    note: Build preparation complete

Could not build the precompiled application for the device.

[mikeperri]

The last time I ran into that particular issue, I ended up just recreating the whole iOS project. Anyway, if the example project builds, I would make sure your project's Podfile is similar to the example project's Podfile. Can you post your project's Podfile? Also can you post the output from flutter doctor?

[oppq1234]

This is my Podfile:

# Uncomment this line to define a global platform for your project
# platform :ios, '9.0'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,
}

def flutter_root
  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
  unless File.exist?(generated_xcode_build_settings_path)
    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
  end

  File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
  end
  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

flutter doctor -v:

[✓] Flutter (Channel master, 2.5.0-2.0.pre.88, on macOS 11.4 20F71 darwin-x64, locale
    zh-Hant-TW)
    • Flutter version 2.5.0-2.0.pre.88 at /usr/local/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 9c32e5a1d2 (5 周前), 2021-07-30 00:20:45 -0700
    • Engine revision 884e9dacb9
    • Dart version 2.14.0 (build 2.14.0-363.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/ieddiei/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5.1, Build version 12E507
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)

[✓] VS Code (version 1.59.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.25.0

[✓] Connected device (1 available)
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• No issues found!