Okhttp和网络数据

MainActivity类 


import android.support.v4.view.accessibility.AccessibilityManagerCompat;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements CallBackListener<ResponseBean> {

    private RecyclerView recycler;
    private SwipeRefreshLayout swipe;
    List<ResponseBean.美女Bean> listData = new ArrayList<>();
    private StaggeredGridLayoutManager staggeredGridLayoutManager;
    private MyRecyclerViewAdapter adapter;
    private LinearLayoutManager linearLayoutManager;
    private int page;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initData();
        loadMore();
    }

    private void loadMore() {
        swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                listData.clear();
                page++;
                initData(page);
                adapter.notifyDataSetChanged();
                swipe.setRefreshing(false);
            }
        });
        recycler.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
                if (RecyclerView.SCROLL_STATE_IDLE == newState) {
                    int lastVisibleItemPosition = linearLayoutManager.findLastVisibleItemPosition();
                    if (lastVisibleItemPosition == listData.size() - 1) {
                        page++;
                        initData(page);
                        adapter.notifyDataSetChanged();
                    }
                }
            }
        });
    }

    private void initData(String page) {
        NetUtils netUtils = new NetUtils(this);
        netUtils.getNetWorkData(page);
    }

    private void initView() {
        recycler = (RecyclerView) findViewById(R.id.recycelr);
        swipe = (SwipeRefreshLayout) findViewById(R.id.swipe);
        staggeredGridLayoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
        linearLayoutManager = new LinearLayoutManager(this);
        recycler.setLayoutManager(linearLayoutManager);
    }

    @Override
    public void callBackData(final ResponseBean responseBean) {
        if (responseBean != null) {
            listData.addAll(responseBean.person);
            Log.e("TAG","下拉"+listData.size()+"");
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (adapter == null) {
                        adapter = new MyRecyclerViewAdapter(MainActivity.this, listData);
                        recycler.setAdapter(adapter);
                    } else {
                        adapter.notifyDataSetChanged();
                    }
                }
            });
        }
    }
}



 
接口

public interface CallBackListener<T> {
    void callBackData(T t);
}



public class Constance {
    public static final String URL=?


}



适配器


import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;

import java.util.List;



public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.MyViewHolder> {
    private Context context;
    private List<ResponseBean.美女Bean> list;

    public MyRecyclerViewAdapter(Context context, List<ResponseBean.美女Bean> listData) {
        this.context = context;
        this.list=listData;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = parent.inflate(context, R.layout.recycler_item, null);
        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }
    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        //Log.e("TAG",list.size()+"总数据");
        Glide.with(context).load(list.get(position).imgsrc).into(holder.recycler_item_image);
    }

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

    static class MyViewHolder extends RecyclerView.ViewHolder {
        ImageView recycler_item_image;

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

            recycler_item_image = itemView.findViewById(R.id.recycler_item_image);
        }
    }
}





public class NetUtils {
    private static CallBackListener callBackListener;

    public NetUtils(CallBackListener callBackListener) {
        this.callBackListener = callBackListener;
    }

    public  void getNetWorkData(String url) {
        OkHttpClient okHttpClient = new OkHttpClient();
        Request request = new Request.Builder()
                .url(Constance.URL+url)
                .build();
        Call call = okHttpClient.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                callBackListener.callBackData(null);
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful() && response != null) {
                    String data = response.body().string();
                    Logger.d("TAG",data);
                    ResponseBean responseBean = ResponseBean.objectFromData(data);
                    callBackListener.callBackData(responseBean);
                }
            }
        });
    }
}