RecyclerView显示部分结果

Question

我在填写RecyclerView时出现了一个奇怪的问题。 我有一个带有4个标签的TabLayout，在第一个标签中我想显示一个联系人列表，但它只显示部分结果（3个联系人或根本没有） 而我的联系人名单大约是250。 我还注意到，起初只有前两个选项卡被实例化，例如我按第三个选项卡然后第一个选项卡显示预期结果。

这是我的适配器：

public class rvAdapter extends RecyclerView.Adapter<rvAdapter.CustomViewHolder> {
    private static List<Contact> contacts;


    // Provide a reference to the views for each data item
    // Complex data items may need more than one view per item, and
    // you provide access to all the views for a data item in a view holder
    public static class CustomViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public TextView mTextViewName;
        public CheckBox mCheckBox;
        public TextView mTextViewNumber;

        public CustomViewHolder(View view) {
            super(view);
            this.mTextViewName = (TextView) view.findViewById(R.id.tv_name);
            this.mCheckBox = (CheckBox) view.findViewById(R.id.cb_check_box);
            this.mTextViewNumber = (TextView) view.findViewById(R.id.tv_number);
        }
    }

    // Provide a suitable constructor (depends on the kind of dataset)
    public rvAdapter(List<Contact> contacts) {

        this.contacts = contacts;

        Log.d("TAG","constructor "+contacts.size());
    }

    // Create new views (invoked by the layout manager)
    @Override
    public CustomViewHolder onCreateViewHolder(ViewGroup parent,
                                               int viewType) {
        // create a new view
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.contacts_list_item, parent, false);
        // set the view's size, margins, paddings and layout parameters

        CustomViewHolder vh = new CustomViewHolder(v);

        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager)
    @Override
    public void onBindViewHolder(CustomViewHolder holder,int position) {
        // - get element from your dataset at this position
        // - replace the contents of the view with that element
        String name = contacts.get(position).getName();
        String number = contacts.get(position).getPhone_number();
        //Boolean status = contacts.get(position).isSelected();
        holder.mTextViewName.setText(name);
        holder.mTextViewNumber.setText(number);
    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
        return contacts.size();
    }


}

这是如何设置的：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view= inflater.inflate(R.layout.fragment_invite, container, false);

    numbers = new ArrayList<>();
    contacts = new ArrayList<>();
    //find done button
    btn_done = (Button) view.findViewById(R.id.btn_done);
    //find listview
    rv_invite = (RecyclerView) view.findViewById(R.id.rv_invite);
    //get contacts list

    setContacts(numbers);
    //sorting the contact list
    Collections.sort(contacts);

    // use a linear layout manager
    mLayoutManager = new LinearLayoutManager(getActivity().getBaseContext());
    //mLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    rv_invite.setLayoutManager(mLayoutManager);

    // specify an adapter 
    mAdapter = new rvAdapter(contacts);

    rv_invite.setAdapter(mAdapter);
    return view;
}

这是布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="vertical">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_invite"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/btn_done"
        android:layout_gravity="center"
        android:text="@string/Done" />
</LinearLayout>