main.dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:lokstory_flutter_lottie/lokstory_flutter_lottie.dart';
import 'page_dragger.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

  LottieController controller;
  LottieController controller2;
  StreamController<double> newProgressStream;

  _MyAppState() {
    newProgressStream = new StreamController<double>();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: PageDragger(
        stream: this.newProgressStream,
        child: Scaffold(
          appBar: AppBar(
            title: const Text('Lottie'),
          ),
          body: Center(
            child: Column(
              children: <Widget>[
                SizedBox(
                  width: 150,
                  height: 150,
                  child: LottieView.fromURL(
                    url: "https://raw.githubusercontent.com/airbnb/lottie-ios/master/Example/Tests/Watermelon.json",
                    autoPlay: true,
                    loop: true,
                    reverse: true,
                    onViewCreated: onViewCreated,
                  )
                ),
                FlatButton(
                  child: Text("Play"),
                  onPressed: () {
                    controller.play();
                  },
                ),
                FlatButton(
                  child: Text("Stop"),
                  onPressed: () {
                    controller.stop();
                  },
                ),
                FlatButton(
                  child: Text("Pause"),
                  onPressed: () {
                    controller.pause();
                  },
                ),
                FlatButton(
                  child: Text("Resume"),
                  onPressed: () {
                    controller.resume();
                  },
                ),
                Text("From File"),
                Container(
                  child: SizedBox(
                    width: 150,
                    height: 150,
                    child: LottieView.fromFile(
                      filePath: "animations/newAnimation.json",
                      autoPlay: true,
                      loop: true,
                      reverse: true,
                      onViewCreated: onViewCreatedFile,
                    ),
                  ),
                ),
                FlatButton(
                  child: Text("Change Color"),
                  onPressed: () {
                    // Set Color of KeyPath
                    this.controller2.setValue(
                      value: LOTColorValue.fromColor(
                        color: Color.fromRGBO(0, 0, 255, 1)
                      ),
                      keyPath: "body Konturen.Gruppe 1.Fläche 1"
                    );
                    // Set Opacity of KeyPath
                    this.controller2.setValue(
                      value: LOTOpacityValue(opacity: 0.1),
                      keyPath: "body Konturen.Gruppe 1.Fläche 1"
                    );
                  },
                ),
                Text("Drag anywhere to change animation progress"),
              ],
            ),
          ),
        ),
      ),
    );
  }

  void onViewCreated(LottieController controller) {
    this.controller = controller;

    // Listen for when the playback completes
    this.controller.onPlayFinished.listen((bool animationFinished) {
      print("Playback complete. Was Animation Finished? " + animationFinished.toString());
    });
  }

  void onViewCreatedFile(LottieController controller) {
    this.controller2 = controller;
    newProgressStream.stream.listen((double progress) {
      this.controller2.setAnimationProgress(progress);
    });
  }

  void dispose() {
    super.dispose();
    newProgressStream.close();
  }
}