RecyclerView 上拉加载下拉刷新

RecyclerView 上拉加载下拉刷新

 <android.support.v4.widget.SwipeRefreshLayout

        android:id="@+id/teach_swipe"

        android:layout_width="match_parent"

        android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView

            android:id="@+id/rv_recycler_view"

            android:layout_width="match_parent"

            android:layout_height="match_parent" />

    </android.support.v4.widget.SwipeRefreshLayout>

public class RecyclerOnScrollListener extends RecyclerView.OnScrollListener {

    private LinearLayoutManager layoutManager;

    private LoadMoreData loadMoreData;

    public RecyclerOnScrollListener(LinearLayoutManager layoutManager, LoadMoreData loadMoreData) {

        this.layoutManager = layoutManager;

        this.loadMoreData = loadMoreData;

    }

    @Override

    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {

        super.onScrolled(recyclerView, dx, dy);

        int lastVisibleItem = layoutManager.findLastVisibleItemPosition();

        int totalItemCount = layoutManager.getItemCount();

        //dy>0表示向上滑动

        //lastVisibleItem >= totalItemCount - 2表示剩下两个

        if (lastVisibleItem >= totalItemCount - 2 && dy > 0) {

            loadMoreData.loadMore();

        }

    }

    public interface LoadMoreData {

        void loadMore();

    }

}

核心代码片段：------------------

 //下拉刷新

        mSwipeRefresh = (SwipeRefreshLayout) findViewById(R.id.teach_swipe);

        mSwipeRefresh.setSize(1);

        mSwipeRefresh.setColorSchemeColors(Color.RED, Color.GREEN);

        mSwipeRefresh.setProgressBackgroundColorSchemeResource(R.color.colorAccent);

        mSwipeRefresh.setOnRefreshListener(this);

 @Override

    public void onRefresh() {

        indexPage = 1;

        getData();

        mHandler.sendEmptyMessageDelayed(UPDATE, DELAY_TIME);

    }

//上拉加载

        mRecyclerView.addOnScrollListener(new RecyclerOnScrollListener(layoutManager, new RecyclerOnScrollListener.LoadMoreData() {

            @Override

            public void loadMore() {

                indexPage++;

                getData();

            }

        }));