Android标准控件实现下拉刷新，数据获取方式：Bmob云存储。

01 效果图

SwipeRefreshLayout.png

02 Layout

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipeRefreshLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>

03 关键代码

public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {
    private Context mContext;
    SwipeRefreshLayout mSwipeRefreshLayout;
    RecyclerView mRecyclerView;
    TweetAdapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mContext = this;

        initWidget();
        initData();
    }

    private void initData() {
        mAdapter = new TweetAdapter(this, null);
        mRecyclerView.setAdapter(mAdapter);
        mRecyclerView.setLayoutManager(getLayoutManager());
        mSwipeRefreshLayout.setRefreshing(true);
        getDataFromBmob(10);
    }

    private void initWidget() {
        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
        mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
        mSwipeRefreshLayout.setProgressBackgroundColorSchemeResource(R.color.swipe_background_color);
        mSwipeRefreshLayout.setColorSchemeResources(R.color.swipe_color_1,
                R.color.swipe_color_2,
                R.color.swipe_color_3,
                R.color.swipe_color_4);
        mSwipeRefreshLayout.setProgressViewEndTarget(true, 200);
        //mSwipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE);
        //mSwipeRefreshLayout.setPadding(20, 20, 20, 20);
        //mSwipeRefreshLayout.setProgressViewOffset(true, 100, 200);
        //mSwipeRefreshLayout.setDistanceToTriggerSync(50);
        mSwipeRefreshLayout.setOnRefreshListener(this);
    }


    private RecyclerView.LayoutManager getLayoutManager() {
        return new LinearLayoutManager(mContext);
    }

    @Override
    public void onRefresh() {
        getDataFromBmob(0);
    }

    // 获取Bmob云存储数据
    private void getDataFromBmob(int newSkip){
        BmobQuery<Tweet> query = new BmobQuery<>();
        query.include("author");
        query.order("-pubDate");
        query.setSkip(newSkip);
        query.setLimit(10);
        query.findObjects(new FindListener<Tweet>() {
            @Override
            public void done(final List<Tweet> list, BmobException e) {
                if(e == null && list != null){
                    mAdapter.clear();
                    mAdapter.addAll(list);
                    mSwipeRefreshLayout.setRefreshing(false);
                }
            }
        });
    }
}

04 源码

下载地址

05 数据来源

真实数据来自开源中国。