RecyclerViewPulltoRefresh

recyclerview 下拉刷新和加载更多，支持3种layoutmanager，支持添加ItemDecoration，一个简单的封装 ###详细说明：简书

#####How to use 你只需要修改少许部分就能实现一个属于自己的封装抽取，当然自己实现也是很容易的。修改header和footer布局文件，初始化布局文件中的控件，注意一点，header布局中最外层使用RelativeLayout，因为在inflate的时候没有将布局加入parent，会让头部布局在linelayoutmanager中变成wrapcontent。在BaseRefreshRecyclerViewAdapter中修改setHeaderState（）方法设置不同状态下header的state。修改setFooterRefreshFailState()方法，实现在加载更多失败后的状态。最后在使用的时候，需要adapter继承BaseRefreshRecyclerViewAdapter。使用示例：

 final BaseRefreshRecyclerView rcv_test = (BaseRefreshRecyclerView) findViewById(R.id.rcv_test);
        final TestRecyclerViewAdapter madapter = new TestRecyclerViewAdapter();
        StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
        rcv_test.setLayoutManager(staggeredGridLayoutManager);
        rcv_test.addItemDecoration(new SimpleItemDecoration(20,3));
        staggeredGridLayoutManager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_NONE);
        ArrayList list = new ArrayList();
        for (int i = 0; i < 15; i++) {
            list.add(i);
        }
        madapter.setData(list);
        rcv_test.setAdapter(madapter);
        rcv_test.setOnRefreshAndLoadMoreListener(new BaseRefreshRecyclerView.OnRefreshAndLoadMoreListener() {
            @Override
            public void onRefresh() {
                Toast.makeText(MainActivity.this, "Refreshing", Toast.LENGTH_SHORT).show();
                rcv_test.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        rcv_test.completeRefresh();
                    }
                }, 3000);
            }

            @Override
            public void onLoadMore() {
                rcv_test.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        List data = madapter.getData();
                        for (int i = 0; i < 10; i++) {
                            data.add(i * 1000);
                        }
                        madapter.setData(data);
                        madapter.notifyDataSetChanged();
                        rcv_test.completeLoadMore();
                    }
                }, 3000);
            }
        });
    /**
     * 模拟数据回调，刷新和加载更多共用一个回调。completeRefresh()与completeLoadMore()
     * 需要分刷新和加载更多不同情况分别调用
     */
    public class dataCallBack {
        private boolean isLoadMore;

        void onSuccess(){
            rcv_test.completeLoading();//必须调用，重置状态。
            List data = new ArrayList();//解析后的数据。
                if (data != null && data.size() > 0) {
                    if (isLoadMore) {
                        List products = rcv_test.getData();
                        if (products != null) {
                            int size = products.size();
                            products.addAll(data);
                            madapter.notifyItemInserted(size + 1);
                        } else {
                            madapter.setData(data);
                            madapter.notifyDataSetChanged();
                        }
                        rcv_test.completeLoadMore();
                    } else {
                        madapter.setData(data);
                        madapter.notifyDataSetChanged();
                        rcv_test.completeRefresh();
                    }


                } else {
                    rcv_test.noMoreData();
                }
        }
        void onFailed(){
            rcv_test.completeLoading();//必须调用
            madapter.setFooterRefreshFailState();
        }
    }

aiyyz/RecyclerViewPulltoRefresh

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