Flutter Target API 31 and above

If your flutter app is throwing an error while publishing to Play Store to update to target api to 31 or anything beyond 31, this is the simple fix.

Inside android > app > build.gradle

change the following line.

defaultConfig {
  // other values
  targetSdkVersion 31
}

Android will target different SDK version when there are new releases. Based on them, change the number.

If using the imports from local.properties, do the following

def targetSdkVersion = localProperties.getProperty('flutter.targetSdkVersion')
if (targetSdkVersion == null) {
    targetSdkVersion = '31'
}

defaultConfig {
  # other configs
  targetSdkVersion targetSdkVersion
}