＃ What's happen? #

This problem occurred when I was trying to make a button that makes sound while referring Github at youtube

video: https://youtu.be/otIRH2HIFoY Github:https://github.com/FlorianPruemer/flutter_tutorials/blob/master/audio_players/lib/audio_player_url.dart

The argument type 'String' can't be assigned to the parameter type 'Source'.

in that code url is lined by red underline(error)

  playMusic() async {
    await audioPlayer.play(url);
  }

full code

import 'package:audioplayers/audioplayers.dart';
import 'package:flutter/material.dart';

class AudioPlayerUrl extends StatefulWidget {
  @override
  _AudioPlayerUrlState createState() => _AudioPlayerUrlState();
}

class _AudioPlayerUrlState extends State<AudioPlayerUrl> {
  AudioPlayer audioPlayer = AudioPlayer();
  PlayerState audioPlayerState = PlayerState.paused;
  String url = 'https://www.soundhelix.com/examples/mp3/SoundHelix-Song-13.mp3';

  /// Optional
  int timeProgress = 0;
  int audioDuration = 0;

  /// Optional
  Widget slider() {
    return Container(
      width: 300.0,
      child: Slider.adaptive(
          value: timeProgress.toDouble(),
          max: audioDuration.toDouble(),
          onChanged: (value) {
            seekToSec(value.toInt());
          }),
    );
  }

  @override
  void initState() {
    super.initState();

    /// Compulsory
    audioPlayer.onPlayerStateChanged.listen((PlayerState state) {
      setState(() {
        audioPlayerState = state;
      });
    });

    /// Optional
    audioPlayer.setSourceUrl(
        url); // Triggers the onDurationChanged listener and sets the max duration string
    audioPlayer.onDurationChanged.listen((Duration duration) {
      setState(() {
        audioDuration = duration.inSeconds;
      });
    });
    audioPlayer.onPositionChanged.listen((Duration position) async {
      setState(() {
        timeProgress = position.inSeconds;
      });
    });
  }

  /// Compulsory
  @override
  void dispose() {
    audioPlayer.release();
    audioPlayer.dispose();
    super.dispose();
  }

  /// Compulsory
  playMusic() async {
    await audioPlayer.play(url);
  }

  /// Compulsory
  pauseMusic() async {
    await audioPlayer.pause();
  }

  /// Optional
  void seekToSec(int sec) {
    Duration newPos = Duration(seconds: sec);
    audioPlayer
        .seek(newPos); // Jumps to the given position within the audio file
  }

  /// Optional
  String getTimeString(int seconds) {
    String minuteString =
        '${(seconds / 60).floor() < 10 ? 0 : ''}${(seconds / 60).floor()}';
    String secondString = '${seconds % 60 < 10 ? 0 : ''}${seconds % 60}';
    return '$minuteString:$secondString'; // Returns a string with the format mm:ss
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
          alignment: Alignment.center,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              /// Compulsory
              IconButton(
                  iconSize: 50,
                  onPressed: () {
                    audioPlayerState == PlayerState.playing
                        ? pauseMusic()
                        : playMusic();
                  },
                  icon: Icon(audioPlayerState == PlayerState.playing
                      ? Icons.pause_rounded
                      : Icons.play_arrow_rounded)),

              /// Optional
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Text(getTimeString(timeProgress)),
                  SizedBox(width: 20),
                  Container(width: 200, child: slider()),
                  SizedBox(width: 20),
                  Text(getTimeString(audioDuration))
                ],
              )
            ],
          )),
    );
  }
}

CodePudding user response：

You need to provide audio source, to play URL audio

   await audioPlayer.play(UrlSource(url));

You can find more about audioplayers

CodePudding user response：

try using it like below

because you are passing String value but function require url so Uri.parse will help you to convert String to url.

await audioPlayer.play(Uri.parse(url));

CodePudding user response：

try this

playMusic() async {
    await audioPlayer.play(Uri.parse(url));
 }