使用方法：

1，导入依赖

SmartRefreshLayout依赖:

    implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.0.5.1' 

    implementation 'com.scwang.smartrefresh:SmartRefreshHeader:1.0.5.1'

2，找控件

    sm= findViewById(R.id.id_main_sm);

3，设置监听

    //上拉加载

    sm.setOnLoadMoreListener(new OnLoadMoreListener() {

    @Override

    public void onLoadMore(RefreshLayout refreshLayout) {

    page++;

    initData();

    }

    });

    //下拉刷新

    sm.setOnRefreshListener(new OnRefreshListener() {

    @Override

    public void onRefresh(RefreshLayout refreshLayout) {

    list.clear();

    page=1;

    initData();

    }

    });