Mediaplayer - 所有歌曲同时播放 - 其他歌曲没有停止答案

【问题标题】：Mediaplayer - All songs are playing at the same time - Other song is not getting stoppedMediaplayer - 所有歌曲同时播放 - 其他歌曲没有停止
【发布时间】：2017-12-03 17:32:30
【问题描述】：

我正在尝试在我的应用程序中播放音乐（来自 url /server）。我在那里列出了 2 首歌曲。一切正常。除了一个问题。所有歌曲同时播放...我只想播放一首歌曲。我重复所有歌曲都同时播放。

这是该应用程序的屏幕截图

import android.media.MediaPlayer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;

import java.io.IOException;
import java.util.ArrayList;

public class MainActivity2 extends AppCompatActivity {

    private ArrayList<SongInfo> _songs = new ArrayList<SongInfo>();
    RecyclerView recyclerView;
    SeekBar seekBar;
    SongAdapter songAdapter;
    MediaPlayer mediaPlayer;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
        seekBar = (SeekBar) findViewById(R.id.seekBar);


        SongInfo s = new SongInfo("Cheap Thrills", "sia", "http://176.126.236.250/33Mmt/music/hindi/movies/new/oh_my_god/Go-Go-Govinda_(webmusic.in).mp3");
        _songs.add(s);

        s = new SongInfo("Cheap Thrills", "sia", "http://176.126.236.250/33Mmt/music/hindi/movies/new/oh_my_god/Go-Go-Govinda_(webmusic.in).mp3");
        _songs.add(s);

        songAdapter = new SongAdapter(this, _songs);
        recyclerView.setAdapter(songAdapter);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),
                linearLayoutManager.getOrientation());
        recyclerView.addItemDecoration(dividerItemDecoration);
        recyclerView.setLayoutManager(linearLayoutManager);
        recyclerView.setAdapter(songAdapter);


        songAdapter.setOnItemClickListener(new SongAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(final Button b, View view, SongInfo obj, int position) {
                try {
                    if (b.getText().toString().equals("stop")) {
                        b.setText("Play");
                        mediaPlayer.stop();
                        mediaPlayer.reset();
                        mediaPlayer.release();
                        mediaPlayer = null;
                    }else {
                        mediaPlayer = new MediaPlayer();
                        mediaPlayer.setDataSource(obj.getSongUrl());
                        mediaPlayer.prepareAsync();
                        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                            @Override
                            public void onPrepared(MediaPlayer mp) {
                                mp.start();
                                b.setText("stop");
                            }
                        });
                    }

                } catch (IOException e) {
                }
            }
        });

    }

}

这是我的歌曲适配器代码 -:

package com.a03.dip.kaliprasadbengalisongs;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import java.util.ArrayList;

public class SongAdapter extends RecyclerView.Adapter<SongAdapter.SongHolder> {

    ArrayList<SongInfo> _songs;
    Context context;

    OnItemClickListener mOnItemClickListener;

    SongAdapter(Context context, ArrayList<SongInfo> songs) {
        this.context = context;
        this._songs = songs;
    }

    public interface OnItemClickListener {
        void onItemClick(Button b ,View view, SongInfo obj, int position);
    }

    public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
        this.mOnItemClickListener = mItemClickListener;
    }

    @Override
    public SongHolder onCreateViewHolder(ViewGroup viewGroup, int i) {

        View myView = LayoutInflater.from(context).inflate(R.layout.row_song,viewGroup,false);
        return new SongHolder(myView);
    }

    @Override
    public void onBindViewHolder(final SongHolder songHolder, final int i) {
        final SongInfo c = _songs.get(i);
        songHolder.songName.setText(_songs.get(i).songName());
        songHolder.artistName.setText(_songs.get(i).artistName());
        songHolder.btnAction.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mOnItemClickListener != null) {
                    mOnItemClickListener.onItemClick(songHolder.btnAction,v, c, i);
                }
            }
        });
    }

    @Override
    public int getItemCount() {

        return _songs.size();
    }

    public class SongHolder extends RecyclerView.ViewHolder {
        TextView songName,artistName;
        Button btnAction;

        public SongHolder(View itemView) {
            super(itemView);
            songName = (TextView) itemView.findViewById(R.id.tvSongName);
            artistName = (TextView) itemView.findViewById(R.id.tvArtistName);
            btnAction = (Button) itemView.findViewById(R.id.btnPlay);

        }
    }
}

这里是 songInfo 类 -----

package com.a03.dip.kaliprasadbengalisongs;

import android.media.MediaPlayer;

public class SongInfo {
        public String songName ,artistName,songUrl;

    public SongInfo() {
    }

    public SongInfo(String songName, String artistName, String songUrl) {
        this.songName = songName;
        this.artistName = artistName;
        this.songUrl = songUrl;
    }

    public String songName() {
        return songName;
    }

    public String artistName() {
        return artistName;
    }

    public String getSongUrl() {
        return songUrl;
    }

}

【问题讨论】：

标签： android android-mediaplayer media-player audio-player android-music-player

【解决方案1】：

是的！这是我的问题，我仍然想回答这个问题。经过大量研究，我找到了解决方案，我认为我应该通过答案分享它。

所以，你要做的第一件事就是......

删除您添加的 main - 活动中的所有代码。另外，不要忘记删除其他 2 个类（songadapter 和 songInfo）

现在添加这个简单的代码来播放来自 url 的音频...

公共类 PlayaudioActivity 扩展 Activity {

private MediaPlayer mp;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Button b = (Button) findViewById(R.id.button1);
    Button b2 = (Button) findViewById(R.id.button2);

    b.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            stopPlaying();
           mp.setDataSource("http://q.freesfx.co.uk/rx2/mp3s/9/10183_1367780535.mp3");
          // mediaPlayer.prepare();
            mp.start();


if (mediaPlayer.isPlaying()) {
        bPlay.setText(“Stop”);
        mediaPlayer.pause();
    }
    else {
        bPlay.setText(“Stop”);
        mediaPlayer.start();
    }

        }

    });

通过这种方式，您可以添加更多歌曲并毫无问题地播放它们。希望这会帮助你。

【讨论】：

【解决方案2】：

在 MainActivity2.java 中添加此代码。然后代码就可以正常工作了...

private Button PREVIOUS_SONG = null;

在里面添加这段代码

songAdapter.setOnItemClickListener(new SongAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(final Button b, View view, SongInfo obj, int position) {
                try {

    if(PREVIOUS_SONG==null){
                    PREVIOUS_SONG=b;


                }
                else{
                    if(b!=PREVIOUS_SONG){
                        PREVIOUS_SONG.setText("Play");
                        PREVIOUS_SONG=b;
                    }
                }
                    if (b.getText().toString().equals("stop")) {
                        if(mediaPlayer!=null)
                {
                    mediaPlayer.stop();
                    mediaPlayer.reset();
                    mediaPlayer.release();
                    mediaPlayer = null;
                    b.setText("Play");

                    tvstartTime.setText("00:00");
                    tvEndTime.setText("00:00");}
            }else {

                if(mediaPlayer!=null)
                {
                    mediaPlayer.stop();
                    mediaPlayer.reset();
                    mediaPlayer.release();
                    mediaPlayer = null;


                    tvstartTime.setText("00:00");
                    tvEndTime.setText("00:00");}
                Runnable runnable = new Runnable() {
                        mediaPlayer = new MediaPlayer();
                        mediaPlayer.setDataSource(obj.getSongUrl());
                        mediaPlayer.prepareAsync();
                        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                            @Override
                            public void onPrepared(MediaPlayer mp) {
                                mp.start();
                                b.setText("stop");
                            }
                        });
                    }

                } catch (IOException e) {
                }
            }
        });

【讨论】：