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Flutter Android Build Configuration ​

Overview ​

Like in an Android Studio project, you have to edit the build.gradle file. In a Flutter project, it is found at the path ./android/app/build.gradle.

Configuration Location ​

File Path: ./android/app/build.gradle

defaultConfig Section ​

gradle
defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.example.projectname"
    minSdkVersion 19     //*** This is the part that needs to be changed, previously was 16
    targetSdkVersion 31
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}

Configuration Parameters ​

applicationId ​

  • Purpose: Unique identifier for your app on Google Play Store
  • Example: "com.example.projectname"
  • Note: This should be unique and follow reverse domain naming convention

minSdkVersion ​

  • Purpose: Minimum Android API level your app supports
  • Example: 19 (Android 4.4 KitKat)
  • Note: Previously was 16, updated to 19 for better compatibility

targetSdkVersion ​

  • Purpose: The API level your app is designed to run on
  • Example: 31 (Android 12)
  • Note: Should be updated to match the latest stable Android version

versionCode ​

  • Purpose: Internal version number used by Google Play Store
  • Example: 1
  • Note: Must be incremented for each release

versionName ​

  • Purpose: Version string displayed to users
  • Example: "1.0"
  • Note: Human-readable version identifier

testInstrumentationRunner ​

  • Purpose: Specifies the test runner for instrumented tests
  • Example: "android.support.test.runner.AndroidJUnitRunner"

Important Notes ​

  • Always update minSdkVersion when required by dependencies
  • Increment versionCode for each app store release
  • Keep targetSdkVersion up to date with latest Android versions
  • Ensure applicationId is unique before publishing to Play Store