封装分页下拉刷新：PullRefreshRecyclerView

基于SmartRefreshLayout+RecyclerView封装，使得开发者不再需要自己在项目中频繁处理分页记录等繁琐状态。
github地址
使用方法：

<com.gl.gllibrary.widget.pullrefersh.PullRefreshRecyclerView
        android:id="@+id/mPullRefreshRecyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:autoLoadMore="true"
        app:autoRefresh="true"
        app:gl_layoutManager="StaggeredGrid"
        app:gl_spanCount="1"
        app:gl_layoutOritation="VERTICAL"
        app:gl_reverseLayout="false" />

可以在xml中定义layoutManager的各种属性，自动加载等。

代码中可以设置默认加载个数，起始页，以及空态错误页面

        val emptyView = EmptyView(this)
        emptyView.butRetry.setOnClickListener {
            mPullRefreshRecyclerView.mRefreshPageBean.current_page_index = 1
            requestData(true, mPullRefreshRecyclerView.mRefreshPageBean.current_page_index)
        }
        mPullRefreshRecyclerView.mRefreshPageBean.page_load_size = 20
        mPullRefreshRecyclerView.setEmptyView(emptyView)
        mPullRefreshRecyclerView.refreshListener = this
        mPullRefreshRecyclerView.mRefreshPageBean.first_page_index = 540
        adapter = ArtListAdapter()
        mPullRefreshRecyclerView.setAdapter(adapter)

空态页面继承PullRefreshEmptyView根据状态显示数据

public class EmptyView @JvmOverloads constructor(
    context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : PullRefreshEmptyView(context, attrs, defStyleAttr) {

    init {
        LayoutInflater.from(context).inflate(R.layout.empty_view, this, true)
    }

    override fun onEmptyStatus(status: Int) {
        if (status == RefreshPageBean.SHOW_EMPTY_STATUS) {
            tvErrorMsg.text = "暂无数据"
        } else if (status == RefreshPageBean.SHOW_EMPTY_ERROR_STATUS) {
            tvErrorMsg.text = "当前页面加载失败"
        }
    }
}

请求网络回调中调用finishLoadRequest，传入是否成功，下拉刷新，加载更多区分，并且在onDataNotifyChanged刷新即可

 fun requestData(isRefresh: Boolean, page: Int) {
        HttpClient.getRetrofit().create(WanAndroidApi::class.java)
            .articleList(page)
            .enqueue(object : Callback<ArticleListResult> {
                override fun onResponse(
                    call: Call<ArticleListResult>,
                    response: Response<ArticleListResult>
                ) {
                    val result = response.body() as ArticleListResult
                    mPullRefreshRecyclerView.finishLoadRequest(isRefresh,true, result.mData.datas,false)
                }

                override fun onFailure(call: Call<ArticleListResult>, t: Throwable) {
                    mPullRefreshRecyclerView.finishLoadRequest(isRefresh,false)
                }

            })
    }

    override fun onRefresh() {
        requestData(true, mPullRefreshRecyclerView.mRefreshPageBean.current_page_index)
    }

    override fun onLoadMore() {
        requestData(false, mPullRefreshRecyclerView.mRefreshPageBean.current_page_index)
    }

    override fun onDataNotifyChanged(list: MutableList<Any>,isAllLoaded:Boolean) {
        if (isAllLoaded){
            Toast.makeText(this,"没有更多数据",Toast.LENGTH_SHORT).show()
        }
        adapter.mData = list as MutableList<DataX>
        adapter.notifyDataSetChanged()
    }

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