MainApplication.kt: Unresolved reference: BuildConfig

[serezha13]

Environment

System:
  OS: macOS 15.0.1
  CPU: (10) arm64 Apple M1 Pro
  Memory: 121.98 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.9.0
    path: ~/.nvm/versions/node/v20.9.0/bin/node
  Yarn:
    version: 4.5.0
    path: ~/.nvm/versions/node/v20.9.0/bin/yarn
  npm:
    version: 10.1.0
    path: ~/.nvm/versions/node/v20.9.0/bin/npm
  Watchman:
    version: 2024.06.17.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.1
      - iOS 18.1
      - macOS 15.1
      - tvOS 18.1
      - visionOS 2.1
      - watchOS 11.1
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10811636
  Xcode:
    version: 16.1/16B40
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.8
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.75.3
    wanted: 0.75.3
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: true
  newArchEnabled: false

Things I’ve done to figure out my issue

• I used upgrade-helper to do my upgrade.

Upgrading version

0.75.3

Description

Android build has these errors in ./gradlew build/assembleRelease command:

> Task :app:compileDebugKotlin FAILED
e: file:///Users/serezha13/Desktop/projects/nininana-v2/android/app/src/main/java/com/nininana/academy/MainApplication.kt:26:58 Unresolved reference: BuildConfig
e: file:///Users/serezha13/Desktop/projects/nininana-v2/android/app/src/main/java/com/nininana/academy/MainApplication.kt:28:50 Unresolved reference: BuildConfig
e: file:///Users/serezha13/Desktop/projects/nininana-v2/android/app/src/main/java/com/nininana/academy/MainApplication.kt:29:49 Unresolved reference: BuildConfig
e: file:///Users/serezha13/Desktop/projects/nininana-v2/android/app/src/main/java/com/nininana/academy/MainApplication.kt:38:9 Unresolved reference: BuildConfig

After some googling of the error I've tried adding this to my android/app/build.gradle, but it hasn't helped:

buildFeatures {
        buildConfig = true
}

My MainApplication.kt file:

package com.niniana.academy
 
import android.app.Application
import com.facebook.react.PackageList
import com.facebook.react.ReactApplication
import com.facebook.react.ReactHost
import com.facebook.react.ReactNativeHost
import com.facebook.react.ReactPackage
import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
import com.facebook.react.defaults.DefaultReactNativeHost
import com.facebook.soloader.SoLoader
 
class MainApplication : Application(), ReactApplication {
 
  override val reactNativeHost: ReactNativeHost =
      object : DefaultReactNativeHost(this) {
        override fun getPackages(): List<ReactPackage> =
            PackageList(this).packages.apply {
              // Packages that cannot be autolinked yet can be added manually here, for example:
              // add(MyReactNativePackage())
            }
 
        override fun getJSMainModuleName(): String = "index"
 
        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
 
        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
      }
 
  override val reactHost: ReactHost
    get() = getDefaultReactHost(applicationContext, reactNativeHost)
 
  override fun onCreate() {
    super.onCreate()
    SoLoader.init(this, false)
    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
      // If you opted-in for the New Architecture, we load the native entry point for this app.
      load()
    }
  }
}

Found this issue, but didn't help: https://github.com/react-native-community/upgrade-support/issues/263