Android中Recyclew嵌套recycleview

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思路：第一个recycleview的adapter里将所有用到的数据传进去，在第二个里面的convert方法里设置第二个adapter的数据，第二个adapter的recyclew写在第一个recycleview的item中，设置一个boolean值，convert方法中根据点击第一个recycleview的时候设为true显示第二个可见，再次点击设置false为不可见，通过给外部的点击回调控制boolean值，如在adapter这样写:

    public void setOpenList(int position, boolean flag) {
        this.openPosition = position;
        isOpen = flag;
        notifyDataSetChanged();
    }

具体代码:
1.Adapter:

public class CoachEndAdapter extends BaseQuickAdapter<CoachEndItem, BaseViewHolder> {

    private Context mContext;
    private OnItemChildItemClickListener listener;
    private List<CoachEndItem> data;
    private int openPosition = -1;
    private boolean isOpen = false;

    public CoachEndAdapter(Context mContext, @Nullable List<CoachEndItem> data) {
        super(R.layout.item_coach_end, data);
        this.mContext = mContext;
        this.data = data;
    }

    @Override
    protected void convert(BaseViewHolder helper, CoachEndItem item) {
        helper.setVisible(R.id.tv_coach_end, false);
        int position = helper.getAdapterPosition();

        helper.setText(R.id.rv_coach_end_city, item.getCity() + "  (" + item.getStations().size() + ")");
        if (position == openPosition) {
            //点击同一个会发送一个false过来
            if (!isOpen) {
                helper.setVisible(R.id.rv_coach_end_station_list, false)
                        .setBackgroundColor(R.id.rv_coach_end_city,
                                mContext.getResources().getColor(R.color.white));
                return;
            }
            helper.setVisible(R.id.rv_coach_end_station_list, true)
                    .setBackgroundColor(R.id.rv_coach_end_city,
                            mContext.getResources().getColor(R.color.grey_200));
            RecyclerView stationList = helper.getView(R.id.rv_coach_end_station_list);
            stationList.setNestedScrollingEnabled(false);
            stationList.setHasFixedSize(true);
            stationList.setLayoutManager(new LinearLayoutManager(mContext));
            CoachEndStationAdapter mAdapter = new CoachEndStationAdapter(item.getStations());
            stationList.setAdapter(mAdapter);

            mAdapter.setOnItemChildClickListener(new OnItemChildClickListener() {
                @Override
                public void onItemChildClick(BaseQuickAdapter adapter, View view, int position1) {
                    CoachEndItem.StationsBean stationsBean = data.get(position).getStations().get(position1);
                    if (listener != null) {
                        listener.onItemChildItemClick(stationsBean);
                    }
                }
            });
        } else {
            helper.setVisible(R.id.rv_coach_end_station_list, false)
                    .setBackgroundColor(R.id.rv_coach_end_city,
                            mContext.getResources().getColor(R.color.white));
        }


    }

    public void setOpenList(int position, boolean flag) {
        this.openPosition = position;
        isOpen = flag;
        notifyDataSetChanged();
    }

    public class CoachEndStationAdapter extends BaseQuickAdapter<CoachEndItem.StationsBean, BaseViewHolder> {

        public CoachEndStationAdapter(@Nullable List<CoachEndItem.StationsBean> data) {
            super(R.layout.item_coach_end_station, data);
        }

        @Override
        protected void convert(BaseViewHolder helper, CoachEndItem.StationsBean item) {
            helper.setText(R.id.tv_station, item.getName())
                    .addOnClickListener(R.id.tv_station);
        }
    }

    public void setOnItemChildItemClickListener(OnItemChildItemClickListener listener) {
        this.listener = listener;
    }

    public interface OnItemChildItemClickListener {
        //列表的子列表的点击事件
        void onItemChildItemClick(CoachEndItem.StationsBean stationBean);
    }
}

2.第一个adapter的布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv_coach_end"
        android:layout_width="match_parent"
        android:layout_height="24dp"
        android:background="@color/grey_300"
        android:gravity="center_vertical"
        android:paddingLeft="12dp"
        android:text="字母" />

    <View
        android:layout_width="match_parent"
        android:layout_height="4dp"
        android:background="@color/grey_300" />

    <TextView
        android:id="@+id/rv_coach_end_city"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:gravity="center_vertical"
        android:paddingLeft="12dp"
        android:text="城市"
        android:textColor="@color/black"
        android:textSize="@dimen/sp_16"
        android:textStyle="bold" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="@color/grey_300"
        android:visibility="gone" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_coach_end_station_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

3.第二个adapter的布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv_station"
        android:layout_width="match_parent"
        android:layout_height="34dp"
        android:layout_marginLeft="24dp"
        android:gravity="center_vertical"
        android:textColor="@color/black"
        android:textSize="@dimen/sp_16" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="@color/grey_300" />
</LinearLayout>

4.activity使用

    public void initRecyclerView() {
        endList.setNestedScrollingEnabled(false);
        endList.setHasFixedSize(true);
        endList.setLayoutManager(new LinearLayoutManager(this));
        mAdapter = new CoachEndAdapter(this, datas);
        endList.setAdapter(mAdapter);

        mAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
                //第二次点击同一个则关闭
                if (currentOpenPosition == position && isOpen) {
                    isOpen = false;
                    mAdapter.setOpenList(currentOpenPosition, false);
                } else {
                    isOpen = true;
                    mAdapter.setOpenList(position, true);
                    mAdapter.notifyDataSetChanged();
                }
                currentOpenPosition = position;
            }
        });

        mAdapter.setOnItemChildItemClickListener(new CoachEndAdapter.OnItemChildItemClickListener() {
            @Override
            public void onItemChildItemClick(CoachEndItem.StationsBean stationBean) {
                Intent intent = new Intent(CoachEndActivity.this, CoachActivity.class);
                intent.putExtra("end", stationBean);
                setResult(RESULT_OK, intent);
                finish();
            }
        });
    }