Android中如何使用ArrayDeque给RecyclerView设置数据

问题描述

我一直在开发音乐应用程序。在播放队列中，我需要向两端添加数据（下一个播放，稍后播放） 为此，我使用了 Array Deque 并在 RecyclerView Adapter 中尝试使用数组 deque 本身，但出现错误

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.njz.muzic,PID: 19333
java.lang.indexoutofboundsexception: Inconsistency detected. Invalid item position 1(offset:1).state:2 androidx.recyclerview.widget.RecyclerView{5260e VFED..... ......ID 0,144-720,1520 #7f090179 app:id/nextinQueueRecyclerView},adapter:com.njz.muzic.Adapter.NextInQueueAdapter@9da82f,layout:androidx.recyclerview.widget.linearlayoutmanager@fb91e3c,context:com.njz.muzic.PlayQueueActivity@bad4178
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6183)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6118)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6114)
    at androidx.recyclerview.widget.linearlayoutmanager$LayoutState.next(linearlayoutmanager.java:2303)
    at androidx.recyclerview.widget.linearlayoutmanager.layoutChunk(linearlayoutmanager.java:1627)
    at androidx.recyclerview.widget.linearlayoutmanager.fill(linearlayoutmanager.java:1587)
    at androidx.recyclerview.widget.linearlayoutmanager.onLayoutChildren(linearlayoutmanager.java:665)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4134)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3851)
    at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4404)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1855)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at com.android.internal.policy.DecorView.onLayout(DecorView.java:1062)
    at android.view.View.layout(View.java:23753)
    at android.view.ViewGroup.layout(ViewGroup.java:7277)
    at android.view.ViewRootImpl.performlayout(ViewRootImpl.java:3679)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3139)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2200)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:9065)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:999)
    at android.view.Choreographer.doCallbacks(Choreographer.java:797)
    at android.view.Choreographer.doFrame(Choreographer.java:732)
    at android.view.Choreographer$FramedisplayEventReceiver.run(Choreographer.java:984)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:8019)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)

这是我的适配器类

public class NextInQueueAdapter extends RecyclerView.Adapter<NextInQueueAdapter.ViewHolder> {
Context context;
private arraydeque<String[]> arraydeque;

public NextInQueueAdapter(arraydeque<String[]> arraydeque,Context context) {
    this.arraydeque = arraydeque;
    this.context = context;
}

public void setarraydeque(arraydeque<String[]> arraydeque) {
    this.arraydeque = arraydeque;
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent,int viewType) {
    return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.nextinqueueitem,parent,false));
}

@Override
public void onBindViewHolder(@NonNull ViewHolder holder,int position) {
    String[] pop = arraydeque.pop();
    holder.id = pop[0];
    holder.artistName.setText(pop[1]);
    holder.songName.setText(pop[2]);
    Glide.with(context).load(pop[3]).into(holder.albumartwork);
}

@Override
public int getItemCount() {
    return arraydeque.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView artistName,songName;
    ImageView albumartwork;
    String id;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        artistName = itemView.findViewById(R.id.nextinqueueSongArtistNametv);
        songName = itemView.findViewById(R.id.nextinqueueSongNametv);
        albumartwork = itemView.findViewById(R.id.nextInQueueArtworkimage);
    }
}

}

这是具有 RecycleView 的 Activity

public class PlayQueueActivity extends AppCompatActivity {
RecyclerView recyclerView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_play_queue);
    recyclerView = findViewById(R.id.nextinQueueRecyclerView);
    recyclerView.setLayoutManager(new linearlayoutmanager(this,RecyclerView.VERTICAL,false));
    NextInQueueAdapter nextInQueueAdapter = new NextInQueueAdapter(HomeActivity.playqueue,this);
    nextInQueueAdapter.notifyDataSetChanged();
    recyclerView.setAdapter(nextInQueueAdapter);
    findViewById(R.id.nextinqueuebackbutton).setonClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            onBackpressed();
        }
    });
}

}

当我在 arraydeque 为空时打开 PlayQueueActivity 时它会因为没有数据而打开，但是如果我添加数据并打开它会使应用程序崩溃

任何帮助将不胜感激，还是我试图做一些不可能的事情？ 如果是这样，我如何以任何可能的方式实现它？

谢谢！

解决方法

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