asset_downloader 1.0.0

The flutter library designed for efficiently downloading, saving, and utilizing various types of files/assets in a widget.

example/lib/main.dart

import 'dart:io';

import 'package:asset_downloader/asset_downloader.dart';
import 'package:example/video_player_with_placeholder.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // TRY THIS: Try running your application with "flutter run". You'll see
        // the application has a blue toolbar. Then, without quitting the app,
        // try changing the seedColor in the colorScheme below to Colors.green
        // and then invoke "hot reload" (save your changes or press the "hot
        // reload" button in a Flutter-supported IDE, or press "r" if you used
        // the command line to start the app).
        //
        // Notice that the counter didn't reset back to zero; the application
        // state is not lost during the reload. To reset the state, use hot
        // restart instead.
        //
        // This works for code too, not just values: Most code changes can be
        // tested with just a hot reload.
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return const ExampleAssetDownloaderScreen();
  }
}

class ExampleAssetDownloaderScreen extends StatelessWidget {
  const ExampleAssetDownloaderScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FutureBuilder(
          future: AssetDownloader.initialize(),
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              return const SafeArea(
                  child: Column(
                children: [
                  ExampleVideoADMWidget(),
                  SizedBox(
                    height: 16,
                  ),
                  ExampleImageADMWidget(),
                  SizedBox(
                    height: 16,
                  ),
                ],
              ));
            }
            return const Center(child: CircularProgressIndicator());
          }),
    );
  }
}

class ExampleImageADMWidget extends StatelessWidget {
  const ExampleImageADMWidget({super.key});

  @override
  Widget build(BuildContext context) {
    return CachedAssetWidget(
      placeholder: (context) {
        return const SizedBox(
          width: 200,
          height: 200,
          child: Center(
            child: Text('This is a placeholder'),
          ),
        );
      },
      url:
          "https://storage.googleapis.com/gtv-videos-bucket/sample/images/BigBuckBunny.jpg",
      builder: (BuildContext context, File file) {
        return SizedBox(
          width: 200,
          height: 200,
          child: Image.file(file),
        );
      },
    );
  }
}

class ExampleVideoADMWidget extends StatelessWidget {
  const ExampleVideoADMWidget({super.key});

  @override
  Widget build(BuildContext context) {
    return CachedAssetWidget(
      placeholder: (context) {
        return const SizedBox(
          width: 200,
          height: 200,
          child: Center(
            child: Text(
              'This is a downloader placeholder',
              textAlign: TextAlign.center,
            ),
          ),
        );
      },
      url:
          "https://storage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4",
      builder: (BuildContext context, File file) {
        return SizedBox(
            width: 200,
            height: 200,
            child: VideoPlayerWithPlaceholder(
              placeholderWidget:
                  const Center(child: Text('Initializing video')),
              file: file,
              videoAsset: '',
              isFile: true,
              startDelay: const Duration(seconds: 1),
            ));
      },
    );
  }
}