Android 当我旋转到横向，然后旋转回纵向，选择下一首歌时，它不会'；不要更新歌曲信息

好的，我有一个活动，其中我显示正在播放的歌曲，我为横向模式创建了另一个布局，我有一个imageview，显示该歌曲的专辑艺术和actionbar中的标题，所有播放歌曲的显示信息，但当我旋转屏幕，然后旋转回纵向模式，用“下一步”按钮切换歌曲，然后再旋转另一首歌曲时，它仍然显示上一首歌曲的信息

我的第一个活动（显示所有歌曲）

我的歌曲活动课

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.display_songs);

    recyclerView = findViewById(R.id.recyclerView);
    if (recyclerView != null) {
        recyclerView.setHasFixedSize(true);
    }
    songAdapter = new SongAdapter(this, songList);
    recyclerView.setAdapter(songAdapter);
    songAdapter.notifyDataSetChanged();
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
    DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(), linearLayoutManager.getOrientation());
    recyclerView.setLayoutManager(linearLayoutManager);
    recyclerView.addItemDecoration(dividerItemDecoration);

    //RelativeLayouts
    mainLayout = findViewById(R.id.mainLayout);
    secondLayout = findViewById(R.id.secondLayout);
    currSong = findViewById(R.id.currSong);

    //LinearLayouts
    songThumbnail = findViewById(R.id.songThumbnail);

    mToolbar = findViewById(R.id.mToolbar);
    setSupportActionBar(mToolbar);

    if (getSupportActionBar() != null) {
        getSupportActionBar().setTitle(R.string.library);
    }

    tvCurrSongTitle = findViewById(R.id.tvCurrSongTitle);
    tvCurrSongArtist = findViewById(R.id.tvCurrSongArtist);

    recyclerView.addOnItemTouchListener(new OnItemClickListeners(this, new OnItemClickListeners.OnItemClickListener() {
        @TargetApi(Build.VERSION_CODES.O)
        @Override
        public void onItemClick(View view, int position) {
            songIndex = position;
            try {
                mediaPlayer.reset();
                mediaPlayer.setDataSource(songList.get(songIndex).getData());
                mediaPlayer.prepareAsync();
                mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                    @Override
                    public void onPrepared(MediaPlayer mp) {
                        mp.start();
                    }
                });
                Toast.makeText(getApplicationContext(), "You Clicked position: " + position + " " +  songList.get(position).getData(), Toast.LENGTH_SHORT).show();
                tvCurrSongTitle.setText(songList.get(position).getTitle());
                tvCurrSongArtist.setText(songList.get(position).getArtist());
            } catch (Exception e) {

                e.printStackTrace();

            }
        }
    }));

    currSong.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent currSong = new Intent(getApplicationContext(), SongActivity.class);
            currSong.putExtra("songIndex", songIndex);
            startActivity(currSong);
        }
    });

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_song);

    albumArtLarge = findViewById(R.id.albumArtLarge);
    albumArt = findViewById(R.id.albumArt);

    mBtnPlayPause = findViewById(R.id.mBtnPlayPause);
    mBtnNext = findViewById(R.id.mBtnNext);
    mBtnPrev = findViewById(R.id.mBtnPrev);
    mBtnShuffle = findViewById(R.id.mBtnShuffle);
    mBtnRepeat = findViewById(R.id.mBtnRepeat);

    seekBar = findViewById(R.id.seekBar);
    tvSongCurrentTime = findViewById(R.id.tvSongCurrentTime);
    tvSongTotalTime = findViewById(R.id.tvSongTotalTime);
    tvSongListSize = findViewById(R.id.tvSongListSize);


    //Listeners
    seekBar.setOnSeekBarChangeListener(this);
    mediaPlayer.setOnCompletionListener(this);
    mediaPlayer.setOnErrorListener(this);

    Intent currSong = getIntent();
    b = currSong.getExtras();

    mCurrentIndex = (int) b.get("songIndex");

    songActivityToolbar = findViewById(R.id.songActivityToolbar);
    setSupportActionBar(songActivityToolbar);

    if (getSupportActionBar() != null) {
        getSupportActionBar().setTitle(songList.get(songIndex).getTitle());
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    // Load album art clicked song
    Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");
    Uri albumArtUri = ContentUris.withAppendedId(sArtworkUri, songList.get(songIndex).getAlbumid());

    Picasso.with(this)
            .load(albumArtUri)
            .error(R.drawable.blackgreygradientbackground)
            .into(albumArtLarge);

    Picasso.with(this)
            .load(albumArtUri)
            .error(R.drawable.albumcover)
            .resize(500,500)
            .into(albumArt);

    if (mediaPlayer != null) {
        if (mediaPlayer.isPlaying()) {
            mBtnPlayPause.setImageResource(R.drawable.ic_action_pause_white);
            tvSongListSize.setText((mCurrentIndex + 1) + "/" + songList.size());
            updateProgressBar();
        }
    }


    mBtnShuffle.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (isShuffle){
                isShuffle = false;
                Toast.makeText(getApplicationContext(), "Shuffle is off", Toast.LENGTH_SHORT ).show();
                mBtnShuffle.setImageResource(R.drawable.ic_action_shuffle);
            }else{
                isShuffle = true;
                Toast.makeText(getApplicationContext(), "Shuffle is on", Toast.LENGTH_SHORT).show();
                mBtnShuffle.setImageResource(R.drawable.ic_shuffle_on);
                isRepeat = false;
                mBtnRepeat.setImageResource(R.drawable.ic_action_repeat);
            }
        }
    });

    mBtnRepeat.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (isRepeat){
                isRepeat = false;
                Toast.makeText(getApplicationContext(), "Repeat is off", Toast.LENGTH_SHORT).show();
                mBtnRepeat.setImageResource(R.drawable.ic_action_repeat);
            }else{
                isRepeat = true;
                Toast.makeText(getApplicationContext(), "Repeat is on", Toast.LENGTH_SHORT).show();
                mBtnRepeat.setImageResource(R.drawable.ic_repeat_on);
                isShuffle = false;
                mBtnShuffle.setImageResource(R.drawable.ic_action_shuffle);
            }
        }
    });


    mBtnPlayPause.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            try {
                if (mediaPlayer != null) {
                    if (mediaPlayer.isPlaying()) {
                        mediaPlayer.pause();
                        mBtnPlayPause.setImageResource(R.drawable.ic_action_play);
                    } else {
                        mediaPlayer.start();
                        mBtnPlayPause.setImageResource(R.drawable.ic_action_pause_white);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    mBtnNext.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            nextSong();
        }
    });

    mBtnPrev.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           prevSong();
        }
    });
}

private void playSongNumber(final int index) {
    try{
        mediaPlayer.reset();
        mediaPlayer.setDataSource(songList.get(index).getData());
        mediaPlayer.prepareAsync();
        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                mp.start();
                if (getSupportActionBar() != null) {
                    getSupportActionBar().setTitle(songList.get(index).getTitle());
                }

                //Load album art
                Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");
                Uri albumArtUri = ContentUris.withAppendedId(sArtworkUri, songList.get(index).getAlbumid());

                Picasso.with(getApplicationContext())
                        .load(albumArtUri)
                        .error(R.drawable.blackgreygradientbackground)
                        .into(albumArtLarge);


                Picasso.with(getApplicationContext())
                        .load(albumArtUri)
                        .error(R.drawable.albumcover)
                        .resize(500,500)
                        .into(albumArt);


                updateProgressBar();
            }
        });

        seekBar.setProgress(0);
        seekBar.setMax(100);

    }catch (Exception e){
        e.printStackTrace();
    }
}

private void nextSong(){
        mCurrentIndex++;
        mCurrentIndex %= songList.size();
        playSongNumber(mCurrentIndex);
        mBtnPlayPause.setImageResource(R.drawable.ic_action_pause_white);
        tvSongListSize.setText((mCurrentIndex + 1) + "/" + songList.size());
        Toast.makeText(getApplicationContext(), "You Clicked position: " + mCurrentIndex + " " +  songList.get(mCurrentIndex).getData(), Toast.LENGTH_SHORT).show();
    }

private void prevSong(){
    mCurrentIndex = mCurrentIndex > 0 ? mCurrentIndex - 1 : songList.size() - 1;
    playSongNumber(mCurrentIndex);
    mBtnPlayPause.setImageResource(R.drawable.ic_action_pause_white);
    tvSongListSize.setText((mCurrentIndex + 1) + "/" + songList.size());
    Toast.makeText(getApplicationContext(), "You Clicked position: " + mCurrentIndex + " " +  songList.get(mCurrentIndex).getData(), Toast.LENGTH_SHORT).show();

}

@Override
public void onCompletion(MediaPlayer mp) {
    if (isRepeat){
        playSongNumber(mCurrentIndex);
    }else if(isShuffle){
        Random random = new Random();
        mCurrentIndex  = random.nextInt((songList.size() - 1) + 1);
        tvSongListSize.setText((mCurrentIndex + 1) + "/" + songList.size());
        playSongNumber(mCurrentIndex);
    }else if (mCurrentIndex < songList.size()-1){
        mediaPlayer.reset();
        nextSong();
        tvSongListSize.setText((mCurrentIndex + 1) + "/" + songList.size());
    }else{
        playSongNumber(0);
        tvSongListSize.setText((1) + "/" + songList.size());
    }
}

@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
    Toast.makeText(getApplicationContext(), "what:" + what + "extra:" +extra , Toast.LENGTH_SHORT).show();
     return true;
}

private Runnable mUpdateTime = new Runnable() {
    @Override
    public void run() {
        long songCurrentTime = mediaPlayer.getCurrentPosition();
        long songTotalTime = mediaPlayer.getDuration();

        tvSongCurrentTime.setText(""+utilities.msToTimer(songCurrentTime));
        tvSongTotalTime.setText(""+utilities.msToTimer(songTotalTime));

        int progress = (int)(utilities.getProgressPercentage(songCurrentTime, songTotalTime));
        seekBar.setProgress(progress);

        mHandler.postDelayed(this, 100);
    }
};

public void updateProgressBar(){
    mHandler.postDelayed(mUpdateTime, 100);
}

@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
        mHandler.removeCallbacks(mUpdateTime);
}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
        mHandler.removeCallbacks(mUpdateTime);
        int songTotalTime = mediaPlayer.getDuration() ;
        int currentPosition = utilities.progressToTimer(seekBar.getProgress(), songTotalTime);

        mediaPlayer.seekTo(currentPosition);
        updateProgressBar();
}

 }

创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_-song）；
albumArtLarge=findViewById（R.id.albumArtLarge）；
albumArt=findViewById（R.id.albumArt）；
mBtnPlayPause=findviewbyd（R.id.mBtnPlayPause）；
mBtnNext=findviewbyd（R.id.mBtnNext）；
mBtnPrev=findviewbyd（R.id.mBtnPrev）；
mBtnShuffle=findviewbyd（R.id.mBtnShuffle）；
mBtnRepeat=findviewbyd（R.id.mBtnRepeat）；
seekBar=findViewById（R.id.seekBar）；
tvSongCurrentTime=findViewById（R.id.tvSongCurrentTime）；
tvSongTotalTime=findViewById（R.id.tvSongTotalTime）；
tvSongListSize=findViewById（R.id.tvSongListSize）；
//听众
seekBar.setonseekbarchaneglistener（这个）；
mediaPlayer.setOnCompletionListener（此）；
mediaPlayer.setOneErrorListener（此）；
Intent currSong=getIntent（）；
b=currSong.getExtras（）；
mCurrentIndex=（int）b.get（“歌曲索引”）；
songActivityToolbar=findViewById（R.id.songActivityToolbar）；
设置支持操作栏（songActivityToolbar）；
如果（getSupportActionBar（）！=null）{
getSupportActionBar（）.setTitle（songList.get（songIndex.getTitle（））；
getSupportActionBar（）.setDisplayHomeAsUpEnabled（true）；
}
//加载唱片集艺术歌曲
Uri sArtworkUri=Uri.parse（“content://media/external/audio/albumart");
Uri albumArtUri=ContentUris.withAppendedId（sArtworkUri，songList.get（songIndex.getAlbumid（））；
毕加索。用（这个）
.load（albumArtUri）
.错误（R.drawable.blackgreygradientbackground）
.成（大）；
毕加索。用（这个）
.load（albumArtUri）
.错误（R.可绘制的相册封面）
.调整大小（500500）
.进入（艺术专辑）；
如果（mediaPlayer！=null）{
if（mediaPlayer.isPlaying（））{
mBtnPlayPause.setImageResource（R.drawable.ic_action_pause_white）；
tvSongListSize.setText（（mCurrentIndex+1）+“/”+songList.size（））；
updateProgressBar（）；
}
}
mBtnShuffle.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
如果（isShuffle）{
isShuffle=false；
Toast.makeText（getApplicationContext（），“洗牌已关闭”，Toast.LENGTH\u SHORT.show（）；
mBtnShuffle.setImageResource（R.drawable.ic_action_shuffle）；
}否则{
isShuffle=true；
Toast.makeText（getApplicationContext（），“洗牌已打开”，Toast.LENGTH\u SHORT.show（）；
mBtnShuffle.setImageResource（R.drawable.ic_shuffle_on）；
isRepeat=false；
mBtnRepeat.setImageResource（R.drawable.ic_action_repeat）；
}
}
});
mBtnRepeat.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
如果（isRepeat）{
isRepeat=false；
Toast.makeText（getApplicationContext（），“重复已关闭”，Toast.LENGTH\u SHORT.show（）；
mBtnRepeat.setImageResource（R.drawable.ic_action_repeat）；
}否则{
isRepeat=true；
Toast.makeText（getApplicationContext（），“重复已打开”，Toast.LENGTH\u SHORT.show（）；
mBtnRepeat.setImageResource（R.drawable.ic_repeat_on）；
isShuffle=false；
mBtnShuffle.setImageResource（R.drawable.ic_action_shuffle）；
}
}
});
mBtnPlayPause.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
试一试{
如果（mediaPlayer！=null）{
if（mediaPlayer.isPlaying（））{
mediaPlayer.pause（）；
mBtnPlayPause.setImageResource（R.drawable.ic_action_play）；
}否则{
mediaPlayer.start（）；
mBtnPlayPause.setImageResource（R.drawable.ic_action_pause_white）；
}
}
}捕获（例外e）{
e、 printStackTrace（）；
}
}
});
mBtnNext.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
nextSong（）；
}
});
mBtnPrev.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
prevSong（）；
}
});
}
私有void playSongNumber（最终整数索引）{
试一试{
mediaPlayer.reset（）；
setDataSource（songList.get（index.getData（））；
mediaPlayer.prepareAsync（）；
mediaPlayer.setOnPreparedListener（新的mediaPlayer.OnPreparedListener（）{
@凌驾
已准备好公开作废（MediaPlayer mp）{
mp.start（）；
如果（getSupportActionBar（）！=null）{
getSupportActionBar（）.setTitle（songList.get（index.getTitle（））；
}
//加载相册艺术
Uri sArtworkUri=Uri.parse（“content://media/external/audio/albumart");
Uri albumArtUri=ContentUris.withAppendedId（sArtworkUri，songList.get（index.getAlbumid（））；
Picasso.with（getApplicationContext（））
L