SmartRefreshLayout集成笔记，实现下拉刷新上拉加载更多。

SmartRefreshLayout是一个功能超级全面的下拉刷新，上拉加载更多框架。

1.地址：https://github.com/scwang90/SmartRefreshLayout

2.在gradle添加依赖：

compile 'com.android.support:appcompat-v7:25.3.1'//版本随意compile 'com.scwang.smartrefresh:SmartRefreshLayout:1.0.3'compile 'com.scwang.smartrefresh:SmartRefreshHeader:1.0.3'//没有使用特殊Header，可以不加这行

3.在布局中添加SmartRefreshLayout

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="supplier.ztxx.com.test.MainActivity">    <android.support.v7.widget.Toolbar style="@style/AppTheme.Toolbar"        android:id="@+id/toolbar"        app:title="标题栏"/>    <com.scwang.smartrefresh.layout.SmartRefreshLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/refreshLayout"        >        <android.support.v7.widget.RecyclerView            android:id="@+id/recyclerView"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:overScrollMode="never"            android:background="#fff"            />    </com.scwang.smartrefresh.layout.SmartRefreshLayout></LinearLayout>

4.SmartRefreshLayout的头布局和尾布局有三种方法可以定义，这里只实现一种。
在自定义的app全局定义
public class App extends Application {    //static 代码段可以防止内存泄露    static {        //设置全局的Header构建器        SmartRefreshLayout.setDefaultRefreshHeaderCreater(new DefaultRefreshHeaderCreater() {                @Override                public RefreshHeader createRefreshHeader(Context context, RefreshLayout layout) {                    layout.setPrimaryColorsId(R.color.colorPrimary, android.R.color.white);//全局设置主题颜色                    return new ClassicsHeader(context).setSpinnerStyle(SpinnerStyle.Translate);//指定为经典Header，默认是 贝塞尔雷达Header                }            });        //设置全局的Footer构建器        SmartRefreshLayout.setDefaultRefreshFooterCreater(new DefaultRefreshFooterCreater() {                @Override                public RefreshFooter createRefreshFooter(Context context, RefreshLayout layout) {                    //指定为经典Footer，默认是 BallPulseFooter                    return new ClassicsFooter(context).setSpinnerStyle(SpinnerStyle.Translate);                }            });    }}
5.代码中的实现：
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {    private BaseRecyclerAdapter<TestBean> mAdpater;    private RecyclerView mRecyclerView;    private ArrayList<TestBean> al;    private SmartRefreshLayout mRefreshLayout;    private TestBean testBean;    private static boolean isFirstEnter = true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mRefreshLayout = (SmartRefreshLayout) findViewById(R.id.refreshLayout);        mRecyclerView= (RecyclerView) findViewById(recyclerView);        //状态栏透明和间距处理        //标题栏处理        StatusBarUtil.setPaddingSmart(this,findViewById(R.id.toolbar));        StatusBarUtil.immersive(this, 0xff000000, 0.1f);        getData();        setAdapter();        setListener();    }    private void getData() {        al = new ArrayList<>();               for (int i=0;i<50;i++){            testBean = new TestBean();            testBean.setName("条目"+i);            al.add(testBean);        }    }    private void setAdapter() {        View view = findViewById(recyclerView);        if (view instanceof RecyclerView) {            RecyclerView recyclerView = (RecyclerView) view;            recyclerView.setLayoutManager(new LinearLayoutManager(this));            recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.HORIZONTAL));            recyclerView.setItemAnimator(new DefaultItemAnimator());                      recyclerView.setAdapter(mAdpater=new BaseRecyclerAdapter<TestBean>(al,simple_list_item_2,this) {                @Override                protected void onBindViewHolder(SmartViewHolder holder, TestBean model, int position) {                    holder.text(android.R.id.text1, model.getName());                    holder.text(android.R.id.text2, model.getName());                    holder.textColorId(android.R.id.text2, R.color.colorAccent);                }            });            mRecyclerView = recyclerView;        }        if (isFirstEnter) {            isFirstEnter = false;            //触发自动刷新            mRefreshLayout.autoRefresh();        }    }    private void setListener() {        mRefreshLayout.setOnRefreshListener(new OnRefreshListener() {            @Override            public void onRefresh(RefreshLayout refreshlayout) {                refreshlayout.finishRefresh(2000);            }        });        mRefreshLayout.setOnLoadmoreListener(new OnLoadmoreListener() {            @Override            public void onLoadmore(RefreshLayout refreshlayout) {                refreshlayout.finishLoadmore(2000);            }        });    }        @Override    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        Intent intent=new Intent(this,WeiboPracticeActivity.class);        this.startActivity(intent);        mRefreshLayout.autoRefresh();    }}