通过搜索栏android搜索后如何在Listview中播放正确的歌曲

如何解决通过搜索栏android搜索后如何在Listview中播放正确的歌曲

我正在创建一个简单的android音乐播放器应用程序，该程序播放存储在原始文件夹中的歌曲列表，效果很好，但是在实现操作栏搜索视图之后。当我通过搜索栏搜索特定歌曲时，列表项的顺序发生了变化，当我单击该歌曲时，它正在播放另一首歌曲。我不知道该怎么解决。帮我解决这个问题。

这是我的代码主要活动

public class MainActivity extends AppCompatActivity {

    final  ArrayList<SongList> songs = new ArrayList<>();
    ListView listView;

    private MediaPlayer mMediaPlayer;

    private AudioManager mAudioManager;

    private AudioManager.OnAudioFocusChangeListener mOnAudioFocusChangeListener = new AudioManager.OnAudioFocusChangeListener() {
        @Override
        public void onAudioFocusChange(int focusChange) {
            if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT ||
                    focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) {

                mMediaPlayer.pause();
                mMediaPlayer.seekTo(0);
            } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {

                mMediaPlayer.start();
            } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS) {

                releaseMediaPlayer();
            }
        }
    };

    private MediaPlayer.OnCompletionListener mCompletionListener = new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mediaPlayer) {

            releaseMediaPlayer();
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        listView = findViewById(R.id.list);

        songs.add(new SongList("Let Go","Garden State",R.raw.s1));
        songs.add(new SongList("Falling Slowly","Once",R.raw.s2));
        songs.add(new SongList("Kiss Me","She's All That",R.raw.s3));
        songs.add(new SongList("Wher Is","Skyfall",R.raw.s4));
        songs.add(new SongList("When I Fall","Sleepless In Seattle",R.raw.s5));
        songs.add(new SongList("Happy","Despicable Me 2",R.raw.s6));
        songs.add(new SongList("can't Stop","Berlin",R.raw.s7));
        songs.add(new SongList("You And Me","Greats",R.raw.s8));
        songs.add(new SongList("Young And Beautiful","Real",R.raw.s9));
        songs.add(new SongList("Real Hero","Youth",R.raw.s10));
        songs.add(new SongList("I Missed Tou","Reality Bites",R.raw.s11));
        songs.add(new SongList("I Will Always","The Bodyguard",R.raw.s12));
        listView.setAdapter(new SongAdapter(MainActivity.this,R.layout.list_item,songs));


        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView,View view,int position,long l) {
                releaseMediaPlayer();


                SongList songList = songs.get(position);




                int result = mAudioManager.requestAudioFocus(mOnAudioFocusChangeListener,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);

                if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
                    mMediaPlayer = MediaPlayer.create(MainActivity.this,songList.getAudioResourceId());
                    mMediaPlayer.start();
                    mMediaPlayer.setOnCompletionListener(mCompletionListener);
                }
            }
        });
    }
    @Override
    protected void onStop() {
        super.onStop();
        releaseMediaPlayer();
    }


    private void releaseMediaPlayer() {

        if (mMediaPlayer != null) {
            mMediaPlayer.release();
            mMediaPlayer = null;
            mAudioManager.abandonAudioFocus(mOnAudioFocusChangeListener);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.my_menu,menu);

        MenuItem menuItem = menu.findItem(R.id.searchMenu);
        SearchView searchView = (SearchView) menuItem.getActionView();

        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                ArrayList<SongList> results = new ArrayList<>();

                for(SongList x: songs)
                {
                    if(x.SongName.contains(newText))
                        results.add(x);

                }

               ((SongAdapter)listView.getAdapter()).update(results);

                return false;
            }
        });
        return super.onCreateOptionsMenu(menu);
    }
}

适配器

public class SongAdapter extends ArrayAdapter {



    ArrayList<SongList> songLists;

    public SongAdapter(Context context,int layout,ArrayList<SongList> songLists)
    {
        super(context,layout);
        this.songLists = songLists;
    }
    public void update(ArrayList<SongList> results)
    {
        songLists = new ArrayList<>();
        songLists.addAll(results);
        notifyDataSetChanged();
    }


    public class ViewHolder{
        TextView textView1;
        TextView textView2;
    }

    @Override
    public int getCount() {
        return songLists.size();
    }

    @NonNull
    @Override
    public View getView(int position,@Nullable View convertView,@NonNull ViewGroup parent) {

        View row;
        row = convertView;
        ViewHolder viewHolder;
        if(row==null)
        {
            row = LayoutInflater.from(getContext()).inflate(R.layout.list_item,parent,false);
            viewHolder = new ViewHolder();
            viewHolder.textView1 = row.findViewById(R.id.song_text_view);
            viewHolder.textView2 = row.findViewById(R.id.movie_text_view);
            row.setTag(viewHolder);
        }
        else{
            viewHolder = (ViewHolder) row.getTag();
        }
        viewHolder.textView1.setText(songLists.get(position).SongName);
        viewHolder.textView2.setText(songLists.get(position).MovieName);
        return row;

    }
}

Java类

public class SongList {

     String SongName;
     String MovieName;
     int AudioResourceId;

    public SongList(String SongName,String MovieName,int AudioResourceId) {
        this.SongName = SongName;
        this.MovieName = MovieName;
        this.AudioResourceId = AudioResourceId;

    }
    public int getAudioResourceId() {
        return AudioResourceId;
    }
}