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Cover image for FlutterFlow | Codemagic CI with Google Play Store
Tarlan Isaev 🍓
Tarlan Isaev 🍓

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FlutterFlow | Codemagic CI with Google Play Store

**TL:DR :)

Setting up a Flutter project**

Files preparation

Before listing our app on Codemagic we shoul prepare our project for the delivery. Here's my "build.gradle" file with the complete code.

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

`def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.gms.google-services' // Google Services plugin

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

android {
compileSdkVersion 31
ndkVersion '23.1.7779620'
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}

lintOptions {
    disable 'InvalidPackage'
}

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.flutterflow.foodshare"
                minSdkVersion 21
    targetSdkVersion 31
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
               ndk {
                       debugSymbolLevel 'FULL'
              }
}
signingConfigs {
    release {
        keyAlias keystoreProperties['keyAlias']
        keyPassword keystoreProperties['keyPassword']
        storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
        storePassword keystoreProperties['storePassword']
    }
}

buildTypes {
    release {
        // TODO: Add your own signing config for the release build.
        // Signing with the debug keys for now, so `flutter run --release` works.
        signingConfig signingConfigs.release
    }
}
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}

flutter {
source '../..'
}

dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}`

Acording to our delivering build we have to increase our "version: 1.0.0+1" build in root folder of our project "../pubspec.yaml". The second build is going to be "version: 1.0.0+2" and so on and so forth.

Path: ../pubspec.yaml

...
version: 1.0.0+13
...

Version inconsistency between local and Codemagic

First, you need to make sure that the gradlew file isn’t in ".gitignore". Look for "../android/gradlew", and if it’s in ".gitignore", delete it from there. I simply commented two lines. Then add "!gradle-wrapper.jar" to a new line in ".gitignore" to create an exception so that "gradle-wrapper.jar" would also be excluded from ".gitignore".

Path: "../android/.gitignore"

`gradle-wrapper.jar
!gradle-wrapper.jar
/.gradle
/captures/
/gradlew
/gradlew.bat

/gradlew

/gradlew.bat

/local.properties
GeneratedPluginRegistrant.java`

Change "distributionUrl" to version "7.2" in "../android/gradle/wrapper/gradle-wrapper.properties"

Path: ../android/gradle/wrapper/gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

In our case, run "./gradlew wrapper --gradle-version 7.2" inside "../android" locally to create gradlew and gradle-wrapper.properties files in your repository.

Change icons

A bit annoyng part for me is changing icons in a few folders. Otherwise we will see the default flutter icon on installed app. Hopefully it will be fixed soon by FlutterFlow team :)

Following path "../android/app/src/main/res" and directories within it:

  • ../android/app/src/main/res/mipmap-hdpi
  • ../android/app/src/main/res/mipmap-mdpi
  • ../android/app/src/main/res/mipmap-xhdpi
  • ../android/app/src/main/res/mipmap-xxhdpi
  • ../android/app/src/main/res/mipmap-xxxhdpi

Image description

For toasting those icons I've been using online tools. Not sure which platforms in particular. Here's a few anyway :)

Codemagic configuration

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I'll just simply share my configuration to make things way easier 🙂

Build for platforms

  • Android Image description

Run build on

  • Free - macOS Standard VM (2.3GHz Quad Core / 8GB)
  • No "Build triggers"
  • No "Environment variables"
  • No "Dependency caching"

Image description

Add custom settings

  • No "Post-clone script"
  • No "Pre-test script"

Tests

  • No tests are covered yet

*Add custom settings for post-tests *

  • No "Post-test script"
  • No "Pre-build script"

Build
In my case I changed a few settings:

  • Flutter version: channel Beta
  • Mode: release

*Add custom settings for post-build scripts *

  • No "Post-build script"

Distribution

*Enable Android code signing. *
Was covered in Build and release an Android app to Google Play Store.

  • Keystore*: upload keystore
  • Keystore password: add keystore password
  • Key alias: upload
  • Key password: add key password

Enable Google Play publishing

  • Add "Credentials (.json)*" key.

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If you don't have the json key or file is corrupted you should generated it on "Google Cloud Platform" at "IAM & Admin" section and "Service accounts".

Press "Create Service Account". Here's my overview.

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Add the service account name and click "Done".
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Grant this service account access to project:

  • Cloud Build Editor
  • Firebase Service Management Service Agent
  • Service Account Token Creator
  • Service Account User

Finalise it - click "Done".

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Create new or add JSON key in key category. For my project I added a new key.

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Generated and added key should look like this.

Image description

Firebase App Distribution

  • Disabled

Notifications

  • Enable email publishing and add your email.
  • Slack is disabled.

Post-publish script

  • No any script

Configs in yaml format
Here's the complete config codemagic.yaml file
Track: internal

`# Automatically generated on 2021-11-13 UTC from https://codemagic.io/app/6179aca0a05d5e8795c3cfa0/settings

Note that this configuration is not an exact match to UI settings. Review and adjust as necessary.

workflows:
default-workflow:
name: Default Workflow
max_build_duration: 30
environment:
vars:
FCI_KEYSTORE_PATH: /tmp/keystore.keystore
FCI_KEYSTORE: Encrypted(Z0FBQUF...2TGxYYVBBPT0=)
FCI_KEYSTORE_PASSWORD: Encrypted(Z0FBQUF...g0Ni1xVlE9PQ==)
FCI_KEY_PASSWORD: Encrypted(Z0FBQUFB...FMZHc9PQ==)
FCI_KEY_ALIAS: Encrypted(Z0FBQUF...ZWWQ5aWc9PQ==)
flutter: beta
xcode: latest
cocoapods: default
scripts:
- |
# set up key.properties
echo $FCI_KEYSTORE | base64 --decode > $FCI_KEYSTORE_PATH
cat >> "$FCI_BUILD_DIR/android/key.properties" < storePassword=$FCI_KEYSTORE_PASSWORD
keyPassword=$FCI_KEY_PASSWORD
keyAlias=$FCI_KEY_ALIAS
storeFile=/tmp/keystore.keystore
EOF
- |
# set up local properties
echo "flutter.sdk=$HOME/programs/flutter" > "$FCI_BUILD_DIR/android/local.properties"
- flutter packages pub get
- flutter build appbundle --release
artifacts:
- build//outputs/apk//.apk
- build/
/outputs/bundle//.aab
- build//outputs//mapping.txt
- flutter_drive.log
publishing:
email:
recipients:
- tamerlanium@gmail.com
google_play:
credentials: Encrypted(Z0FBQUF...VNUdUMU09)
track: internal
in_app_update_priority: 0`

Last step
Run following "flutter clean" command on terminal and commit the changes then rerun your Codemagic build.

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Troubleshooting

Error caused by dependencies or could be something else
If you encounter an error with dependencies pls try out to clean your project through the terminal:

sudo flutter clean && sudo rm ios/Podfile && sudo rm ios/Podfile.lock pubspec.lock && sudo rm -rf ios/Pods ios/Runner.xcworkspace && sudo rm -Rf ios/.symlinks && sudo rm -Rf ios/Flutter/Flutter.framework && sudo rm -Rf ios/Flutter/Flutter.podspec

and

flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs

then once again commit the changes and rerun your Codemagic build.

That should help you to set up the CI/CD pipeline :)

Thank you :)



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