Recyclerview上下拉刷新

最新推荐文章于 2024-06-21 23:54:17 发布

转载最新推荐文章于 2024-06-21 23:54:17 发布 · 261 阅读

本文介绍了一个基于Android平台的应用程序——火山App中视频模块的实现方式。通过使用Fragment及RecyclerView展示视频列表，并实现了上拉加载更多和下拉刷新的功能。

package com.example.administrator.huoshan_app.Home_fragment.Fragment_video;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.administrator.huoshan_app.Home_fragment.Fragment_video.Api_video.Viedeo_bean;
import com.example.administrator.huoshan_app.Home_fragment.Fragment_video.Mvp_Video.Video_Iview;
import com.example.administrator.huoshan_app.Home_fragment.Fragment_video.Mvp_Video.Video_presenter;
import com.example.administrator.huoshan_app.R;

import org.greenrobot.eventbus.EventBus;

import java.util.List;


/**
 * Created by Administrator on 2017/12/27/027.
 */

public class Fragment_shipin extends Fragment implements Video_Iview{

    private View view;
    private RecyclerView rv;


    int pager = 0;
    //上下拉刷新控件
    private SwipeRefreshLayout sw;
    private Video_presenter video_presenter;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        if (view==null) {
            view = inflater.inflate(R.layout.home_prage_video, container, false);
            rv = view.findViewById(R.id.video_rv);
            sw = view.findViewById(R.id.sw);

            //MVP
            video_presenter = new Video_presenter(this);

            video_presenter.getthis(pager);


        }
        return view;

    }

   //MVP
    @Override
    public void successful(final Viedeo_bean bean) {
        Video_adaper adaper = new Video_adaper(getContext(),bean);
        final GridLayoutManager manager = new GridLayoutManager(getContext(), 2);
        rv.setLayoutManager(manager);
        rv.setAdapter(adaper);


        //RecyclerView上拉刷新
        rv.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
                //GridLayoutManager
                int position = manager.findLastVisibleItemPosition();
                if (position == bean.getData().size()-1){
                    pager++;
                    //MVP再次请求
                    video_presenter.getthis(pager);
                    //关闭
                    sw.setRefreshing(false);
                }
            }
        });

        //SwipeRefreshLayout下拉加载
        sw.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                pager++;
                //MVP再次请求
                video_presenter.getthis(pager);
                //关闭
                sw.setRefreshing(false);
            }
        });



    }
}