anyway/frontend/android

Android Setup

Keystore setup

keytool -genkey -v -keystore release.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias upload

• This is required to store local credentials securely and more importantly to sign the app for google play store distribution.

Using secret credentials during build

Following the guide under https://developers.google.com/maps/flutter-package/config#android_1.

• Add the following to android/build.gradle:

  buildscript {
      dependencies {
          classpath "com.google.android.libraries.mapsplatform.secrets-gradle-plugin:secrets-gradle-plugin:2.0.1"
      }
  }
  

• Add the following to android/app/build.gradle:

  plugins {
      // ...
      id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
  }
  

• Add the credentials to android/secrets.properties:

  MAPS_API_KEY=YOUR_API_KEY
  

• Reference the credentials in android/app/src/main/AndroidManifest.xml:

  <meta-data
      android:name="com.google.android.geo.API_KEY"
      android:value="${MAPS_API_KEY}" />
  

Signing the app

Compared to the flutter template application, a few changes have to be made:

• Added to android/app/build.gradle:

      signingConfigs {
          release {
              keyAlias = secretProperties['keyAlias']
              keyPassword = secretProperties['keyPassword']
              storeFile = secretProperties['storeFile'] ? file(secretProperties['storeFile']) : null
              storePassword = secretProperties['storePassword']
          }
      }
  

• Changed the buildTypes to use the release signing config:

      buildTypes {
          release {
              signingConfig signingConfigs.release
          }
      }
  

  This makes use of the secretProperties defined previously:

      secretPropertiesFile.withReader('UTF-8') { reader ->
          secretProperties.load(reader)
      }