flutter_play_asset

This library provides the play asset delivery functionality from the play core library for Flutter framework. Only works for Android.

Installation & Testing

Setup Android Environtment settings

Open the project build.gradle, then update the android build tool to version 4.0.0 or higher
Save your asset pack in your directory by following this guideline https://developer.android.com/guide/app-bundle/asset-delivery/build-native-java
Import this package by updating your dependencies

dependencies:
  flutter_play_asset: ^1.0.0

How it works

Initialize the listener

You need to initialize an object FlutterPlayAsset inside the class where the download take action. You can handle the download process by overriding the callback method that will be called by the download process

class ViewPlayAsset {
  void OnProgressDownload(int percentage){

  }

  void OnAssetPathFound(String path){

  }

  void OnProcessLoadingAssetPath(String path){

  }
}

The class that requesting the download need to implement ViewPlayAsset to be able to override the callbacks. So you need to initialize your FlutterPlayAsset in the initState

FlutterPlayAsset.init(this);

Check location of the downloaded asset pack

You can use the assets inside on-demand asset pack by load them from the internal storage. So you need the absolute path where the asset pack is saved, then append them with the asset name. FlutterPlayAsset a method returning this path with this function.

flutterPlayAsset.getAssetPath(assetPackName);

Testing the app

You can test the app locally by downloading the bundletool and following this guideline https://developer.android.com/guide/app-bundle/asset-delivery#next-step-instructions