为什么RecyclerView中Item点击显示错乱了？

Question

如图，我点击下面的item上面第二个item也会变色，我并没有滑动屏幕。以下是Adapter的代码：package com.litemusic.dasong.ui.local.adapter; import android.content.Context; import android.graphics.Color; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import com.litemusic.dasong.R; import com.litemusic.dasong.base.OnItemClickListener; import com.litemusic.dasong.db.bean.Music; import com.litemusic.dasong.db.helper.MusicHelper; import java.util.List; /**  * Created by dason on 2018/3/5 0005.  */ public class LocalAdapter extends RecyclerView.Adapter<LocalAdapter.Holder> {     private Context context;     private List<Music> list;     private OnItemClickListener itemClickListener;     public LocalAdapter(Context context, List<Music> list){         this.context = context;         this.list = list;     }     @Override     public Holder onCreateViewHolder(ViewGroup parent, int viewType) {         View root = LayoutInflater.from(context).inflate(R.layout.item_music,parent,false);         return new Holder(root,itemClickListener);     }     @Override     public void onBindViewHolder(Holder holder, int position) {         holder.initView(position);     }     @Override     public int getItemCount() {         return list.size();     }     public void setOnItemClickListener(OnItemClickListener listener){         if(itemClickListener == null){             itemClickListener = listener;         }     }     class Holder extends RecyclerView.ViewHolder implements View.OnClickListener{         private TextView tvTitle;         private TextView tvArtist;         private TextView tvAlbum;         private View vLine;         private OnItemClickListener listener;         public Holder(View itemView,OnItemClickListener listener) {             super(itemView);             this.listener = listener;             itemView.setOnClickListener(this);         }         public void initView(int position){             tvTitle = $(R.id.tv_title);             tvArtist = $(R.id.tv_artist);             tvAlbum = $(R.id.tv_album);             vLine = $(R.id.v_line);             if(position == list.size()-1){                 vLine.setVisibility(View.GONE);             }             setViewText(position);             setTextColor(position);         }         public void setViewText(int position){             tvTitle.setText(list.get(position).getTitle());             tvArtist.setText(list.get(position).getArtist());             tvAlbum.setText(list.get(position).getAlbum());         }         public void setTextColor(int position){             Music music = list.get(position);             int color = Color.parseColor("#93e0ff");             if(music != null && music.getIsPlaying()){                 tvTitle.setTextColor(color);                 tvArtist.setTextColor(color);                 tvAlbum.setTextColor(color);                 Log.d("ZLog","pos="+position);             }         }         public <V extends View> V $(int id){             return (V)itemView.findViewById(id);         }         @Override         public void onClick(View v) {             int postion = getAdapterPosition();             listener.onItemClick(v,postion);             for(Music m:list){                 if(m.getIsPlaying()){                     int index = list.indexOf(m);                     if(index != postion){                         m.setIsPlaying(false);                         MusicHelper.update(m);                     }                     break;                 }             }             Music music = list.get(postion);             if(music != null && !music.getIsPlaying()){                 music.setIsPlaying(true);                 MusicHelper.update(music);             }             list.removeAll(list);             list.addAll(MusicHelper.getAll());             notifyDataSetChanged();         }     } }