recyclerview

package com.z.zmusicplayer.fragment.mainfragment;

import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

import com.z.zmusicplayer.R;
import com.z.zmusicplayer.bean.VideoBean;
import com.z.zmusicplayer.fragment.BaseFragment;
import com.z.zmusicplayer.http.HttpManager;
import com.z.zmusicplayer.http.MyHttpCallback;
import com.z.zmusicplayer.utils.URLProviderUtil;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Request;
import okhttp3.Response;

import static com.z.zmusicplayer.fragment.mainfragment.MainfragmentContract.*;

/**
 * Created by z on 2017/6/25.
 */

public class MainFragment extends BaseFragment implements MainfragmentContract.View<MainfragmentContract.Presenter> {
    MainfragmentContract.Presenter presenter;
    RecyclerView recyclerView;
    SwipeRefreshLayout refresh;
    private  MainFragmentAdapter adapter;
    private List<VideoBean> videoBeans = new ArrayList<>();
    private boolean refreshing;
    private int lastItemIndex;
    private boolean hasMoreData;
    int startIndex;

    @Override
    protected int getLayoutId() {
        return R.layout.mainfragment;
    }

    @Override
    protected void init() {
        refresh= (SwipeRefreshLayout) rootView.findViewById(R.id.refresh);
        recyclerView= (RecyclerView) rootView.findViewById(R.id.recyclerview);

        // getPicSize(540,640);
        getPicSize(540,300);
        adapter= new MainFragmentAdapter(videoBeans,getActivity(),mWidth,mHeight);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        recyclerView.setAdapter(adapter);
        refresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                refreshing=true;

                presenter.getData(0,size);
            }
        });
        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);

                if(lastItemIndex == videoBeans.size()-1&& hasMoreData){
                    presenter.getData(startIndex,size);
                }
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);

                lastItemIndex = ((LinearLayoutManager) recyclerView.getLayoutManager()).findLastVisibleItemPosition();
            }
        });
        new MainFragmentPresenter(this);
        presenter.getData(startIndex,size);
    }



    @Override
    public void showData(List<VideoBean> videoBeanList) {
        if(refreshing){
            //成员变量 videoBeans 集合 ;
            videoBeans.clear();
            refreshing = false ;
        }
        if(videoBeanList.size()>0){
            hasMoreData = true;
        }else {
            hasMoreData = false ;
        }
        startIndex = startIndex +videoBeanList.size();
        videoBeans.addAll(videoBeanList);
        adapter.notifyDataSetChanged();
        refresh.setRefreshing(false);

    }

    @Override
    public void showError(String errorMsg) {

    }

    @Override
    public void setPresenter(Presenter presenter) {
        this.presenter = presenter;
    }
}

package com.z.zmusicplayer.fragment.mainfragment;

import android.app.Activity;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.z.zmusicplayer.R;
import com.z.zmusicplayer.bean.VideoBean;

import java.util.List;

/**
 * Created by z on 2017/7/2.
 */

public class MainFragmentAdapter extends RecyclerView.Adapter<MainFragmentAdapter.MyViewHolder> {
    private List<VideoBean> videoBeanList = null;
    private Activity activity;
    private LayoutInflater inflater;
    private int mWidth, mHeight;

    public MainFragmentAdapter(List<VideoBean> videoBeanList, Activity activity, int mWidth, int mHeight) {
        this.videoBeanList = videoBeanList;
        this.mWidth = mWidth;
        this.mHeight = mHeight;
        this.activity =activity;
        inflater = LayoutInflater.from(activity);

    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View view = inflater.inflate(R.layout.homepage_item, parent, false);

        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        VideoBean videoBean = videoBeanList.get(position);
        ViewGroup.LayoutParams layoutParams = holder.ivContentimg.getLayoutParams();
        layoutParams.width = mWidth;
        layoutParams.height = mHeight;
        holder.ivContentimg.setLayoutParams(layoutParams);
        holder.viewbg.setLayoutParams(layoutParams);

        holder.tvTitle.setText(videoBean.getTitle());
        holder.tvDescription.setText(videoBean.getDescription());
        String posterPic = videoBean.getPosterPic();
        ImageView iv = holder.ivContentimg;
        if(activity !=null ){
            Log.d("activity",activity.toString());
        }else {
            Log.d("activity","不存在");
        }

        Glide.with(activity).load(posterPic).into(iv);
       // holder.ivContentimg.setImageResource(R.mipmap.home_page_project);
        final int tag;
        String type = videoBean.getType();

        if (type.equals("ACTIVITY")) {
            tag = 0;
            holder.ivType.setImageResource(R.mipmap.home_page_activity);
        } else if (type.equalsIgnoreCase("VIDEO")) {
            tag = 1;
            holder.ivType.setImageResource(R.mipmap.home_page_video);
        } else if (type.equalsIgnoreCase("WEEK_MAIN_STAR")) {
            tag = 2;
            holder.ivType.setImageResource(R.mipmap.home_page_star);
        } else if (type.equalsIgnoreCase("PLAYLIST")) {
            tag = 3;
            holder.ivType.setImageResource(R.mipmap.home_page_playlist);
        } else if (type.equalsIgnoreCase("AD")) {
            tag = 4;
            holder.ivType.setImageResource(R.mipmap.home_page_ad);
        } else if (type.equalsIgnoreCase("PROGRAM")) {
            tag = 5;
            holder.ivType.setImageResource(R.mipmap.home_page_program);
        } else if (type.equalsIgnoreCase("bulletin")) {
            tag = 6;
            holder.ivType.setImageResource(R.mipmap.home_page_bulletin);
        } else if (type.equalsIgnoreCase("fanart")) {
            tag = 7;
            holder.ivType.setImageResource(R.mipmap.home_page_fanart);
        } else if (type.equalsIgnoreCase("live")) {
            tag = 8;
            holder.ivType.setImageResource(R.mipmap.home_page_live);
        } else if (type.equalsIgnoreCase("LIVENEW") || type.equalsIgnoreCase("livenewlist")) {
            tag = 9;
            holder.ivType.setImageResource(R.mipmap.home_page_live_new);
        } else if (type.equalsIgnoreCase("LIVENTORY") || type.equalsIgnoreCase(videoBean.getType())) {
            tag = 10;
            holder.ivType.setImageResource(R.mipmap.home_page_project);
        } else {
            tag  = -100;
            holder.ivType.setImageResource(0);
        }

    }


    @Override
    public int getItemCount() {
        return videoBeanList== null ?0:videoBeanList.size();
    }


    public class MyViewHolder extends RecyclerView.ViewHolder {


        private ImageView ivitemLogo;
        private ImageView ivContentimg;
        private final View viewbg;
        private final TextView tvTitle;
        private final TextView tvDescription;
        private final RelativeLayout rlItemRootVIew;
        private final ImageView ivType;

        public MyViewHolder(View itemView) {
            super(itemView);

            ivitemLogo = (ImageView) itemView.findViewById(R.id.iv_item_logo);
            ivContentimg = (ImageView) itemView.findViewById(R.id.iv_contentimg);
            viewbg = itemView.findViewById(R.id.viewbg);
            tvDescription = (TextView) itemView.findViewById(R.id.tv_description);
            tvTitle = (TextView) itemView.findViewById(R.id.tv_title);
            rlItemRootVIew = (RelativeLayout) itemView.findViewById(R.id.rl_item_rootView);
            ivType = (ImageView) itemView.findViewById(R.id.iv_type);
        }
    }
}