删除RecyclerView项不起作用的方法

Question

我试了好几个小时但我不能让它工作。请帮帮我。

尝试：

当从导航抽屉切换到第2部分时，方法＆＃34; removeStuff＆＃34;被调用，应该检查并删除每个＆＃34; mRecyclerView＆＃34;项目从列表到＆＃34; removedItems＆＃34;数组，所以可以回调。将来我会设置一个if语句，以便＆＃34;匹配＆＃34;数组被删除。

问题：

非常奇怪。当我在＆＃34; myData＆＃34;中的每个数组中有7个元素时，当＆＃34; removeStuff＆＃34;被调用，视图中仍有4个项目。当有8个元素时，删除后仍然有5个元素。然而，当逐个删除项目而不使用循环时，一切都很完美，除了我无法逐个删除所有内容

请引导我解决我在代码中犯的错误:(如果需要的话，我几乎附上了整个代码）

＆＃13;

＆＃13;

//I added the entire script which is relevant to RecyclerView.
//Scroll down to go to the part I have error with

private static RecyclerView.LayoutManager mLayoutManager;
private static RecyclerView mRecyclerView;
private static RecyclerView.Adapter mAdapter;
private static ArrayList < Integer > removedItems;
private static ArrayList < MatchData > matches;

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    MyData.UpdateTiming();

    myOnClickListener = new MyOnClickListener(this);
    mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
    mRecyclerView.setHasFixedSize(true);
    mLayoutManager = new LinearLayoutManager(this);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mRecyclerView.setItemAnimator(new DefaultItemAnimator());

    matches = new ArrayList < > ();
    for (int i = 0; i < MyData.matchArray.length; i++) {
      matches.add(new MatchData(
        MyData.matchArray[i],
        MyData.team1Array[i],
        MyData.team2Array[i],
        MyData.id_[i],
        MyData.venueArray[i],
        MyData.timingArray[i],
        MyData.winnerArray[i],
        MyData.scoreArray[i]
      ));
    }

    removedItems = new ArrayList < > ();

    mAdapter = new MyAdapter(matches);
    mRecyclerView.setAdapter(mAdapter);

    public void onSectionAttached(int number) {

      switch (number) {
        case 1:
          mTitle = getString(R.string.title_section1);
          break;
        case 2:
          mTitle = getString(R.string.title_section2);
          removeStuff();
          break;
      }
    }

  
//ERROR FROM HERE:
    public void removeStuff() {
      int length = MyData.dates.length;
      for (int i = 0; i < length; i++) {
        View child = mRecyclerView.getChildAt(i);
        if (child != null) {
          RecyclerView.ViewHolder mViewHolder = mRecyclerView.findViewHolderForPosition(i);
          TextView textViewName = (TextView) mViewHolder.itemView.findViewById(R.id.textViewMatch);
          String selectedName = (String) textViewName.getText();
          int selectedItemId = -1;
          for (int j = 0; j < MyData.matchArray.length; j++)
            if (selectedName.equals(MyData.matchArray[j])) {
              selectedItemId = MyData.id_[j];
            }
          removedItems.add(selectedItemId);
          matches.remove(i);
          mAdapter.notifyItemRemoved(i);

        }
      }
    }

＆＃13;

＆＃13;

＆＃13;

虽然我有警告，但我没有收到错误。

提前致谢。

编辑：我选择了什么：

＆＃13;

＆＃13;

static class MyOnClickListener implements View.OnClickListener {

  private final Context context;
  private MyOnClickListener(Context context) {
    this.context = context;
  }

  public void onClick(View v) {
    removeItem(v);
  }

  private static void removeItem(View v) {
    int selectedItemPosition = mRecyclerView.getChildPosition(v);
    RecyclerView.ViewHolder mViewHolder = mRecyclerView.findViewHolderForPosition(selectedItemPosition);

    TextView textViewName = (TextView) mViewHolder.itemView.findViewById(R.id.textViewMatch);
    String selectedName = (String) textViewName.getText();
    int selectedItemId = -1;
    for (int i = 0; i < MyData.matchArray.length; i++) {
      if (selectedName.equals(MyData.matchArray[i])) {
        selectedItemId = MyData.id_[i];
      }
    }
    removedItems.add(selectedItemId);
    matches.remove(selectedItemPosition);
    mAdapter.notifyItemRemoved(selectedItemPosition);
  }

}

＆＃13;

＆＃13;

＆＃13;