App version up with Firebase Remote Config

Firebase Remote Config can change the app setting very easy.

Firebase Remote Config | Firebase

Firebase A/B test is also effective, and it is an excellent thing that you can remotely change the setting and take the data further by A/B test with Firebase.

Firebase A/B Testing | Firebase

I introduce to show App version app Dialog with Firebase Remote config.

Setting

First we will introduce the following package.

firebase_remote_config | Flutter Package

Edit pubspec.yml

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter

  firebase_remote_config: ^0.0.6+1

Then, execute this command.

flutter packages get

Implementation

Setting Remote Config, Where Firebase console.

The key name `ios_app_version` is the version of the current application. If it differs from this version, it will be an implementation that issues an update dialog.

_checkAppVersion() async {
    final RemoteConfig remoteConfig = await RemoteConfig.instance;

    MethodChannel platform =
        const MethodChannel(MethodChannelString.appVersion);

    String appVersion;
    try {
      appVersion = await platform.invokeMethod("getAppVersion");
    } on PlatformException catch (e) {
      return;
    }

    if (Platform.isIOS) {
      try {
        final defaults = <String, dynamic>{'ios_app_version': appVersion};
        await remoteConfig.setDefaults(defaults);

        await remoteConfig.fetch();
        await remoteConfig.activateFetched();

        if (appVersion != remoteConfig.getString('ios_app_version')) {
          _showIosUpdateAppDialog();
        }
      } catch (e) {
        print(e.toString());
      }
    }
  }

In this implementation only iOS, but let’s put on another dialog on Android as well.

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Please follow this Twitter. I am posting it in Japanese, but please translate it and read it.

shogo.yamada@Flutterマン (@yshogo87) | Twitter