使用okhttp简单的联网请求

简单配置：
//网络权限
<uses-permission android:name="android.permission.INTERNET"/>
compile 'com.zhy:okhttputils:2.6.2'
compile 'com.jakewharton:butterknife:7.0.1'//view注解
compile 'com.google.code.gson:gson:2.5'
compile 'com.github.bumptech.glide:glide:3.6.1'
<一>Application中okhttp的联网配置:
public class MyApplication extends Application {
public static Context mContext;
@Override
public void onCreate() {
super.onCreate();
//初始化上下文
mContext = this;
//初始化OkHttp
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.connectTimeout(10000L, TimeUnit.MILLISECONDS)
.readTimeout(10000L, TimeUnit.MILLISECONDS)
.addInterceptor(new LoggerInterceptor("TAG"))
.hostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session){
return true;
}
})
.build();
OkHttpUtils.initClient(okHttpClient);
}

public static Context getContext() {
    return mContext;
}

}
《二》请求路径的封装
public class ApiService {
//top路径
public static final String url= "xxx";
public static final String base_url= "xxx";
}
《三》接口回调的封装
public interface NetClient {
void error(String massage);
void sucess(String json);
}
《四》联网请求的二次封装
public class NetUtils
//get请求
public static void get(String url, final NetClient netClient){
OkHttpUtils.get()
.url(url)
.id(100)
.build()
.execute(new StringCallback() {
@Override
public void onError(Call call, Exception e, int id) {
netClient.error(e.getMessage());
}
@Override
public void onResponse(String response, int id) {
netClient.sucess(response);
}
});
}

// 提交请求集合
//https://api.douban.com/v2/movie/top250?start=0&count=10
public static void post(String base_url, final NetClient netClient){
Map<String,String> params = new HashMap<>();
String start = "1";
String count = "10";
params.put("start",start);
params.put("count",count);
OkHttpUtils.get()
.url(base_url)
.params(params)
.id(100)
.build()
.execute(new StringCallback() {
@Override
public void onError(Call call, Exception e, int id) {
netClient.error(e.getMessage());
}
@Override
public void onResponse(String response, int id) {
netClient.sucess(response);
}
});
}
}
《五》简单使用listview 展示一下数据
//若使用recycleview
//转载自：[http://blog.csdn.net/lmj623565791/article/details/45059587]
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.gson.Gson;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

@Bind(R.id.text)
TextView text;
List<MovieEntity.SubjectsBean> subjects;
@Bind(R.id.listview)
ListView listview;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ButterKnife.bind(this);
    //联网请求
    getNetData();
}

private void getNetData() {

// NetUtils.get(ApiService.url, new NetClient() {
// @Override
// public void error(String massage) {
// Toast.makeText(MainActivity.this, "获取失败", Toast.LENGTH_SHORT).show();
// }
//
// @Override
// public void sucess(String json) {
// if (json != null) {
// //解析数据
// parseToData(json);
// }
// }
// });

    NetUtils.post(ApiService.base_url, new NetClient() {
        @Override
        public void error(String massage) {
            Toast.makeText(MainActivity.this, "获取失败", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void sucess(String json) {
            if (json != null) {
                //解析数据
                parseToData(json);
            }
        }
    });
}

private void parseToData(String json) {
    MovieEntity movieEntity = new Gson().fromJson(json, MovieEntity.class);
    text.setText(movieEntity.toString());
    //集合数据
    subjects = movieEntity.getSubjects();
    //设置适配器
    MyAdapter adapter = new MyAdapter(this,subjects);
    listview.setAdapter(adapter);
}

class MyAdapter extends BaseAdapter{
    Context context;
    List<MovieEntity.SubjectsBean> subjects;
    private LayoutInflater mInflater;

    public MyAdapter(Context context, List<MovieEntity.SubjectsBean> subjects) {
        this.context = context;
        this.subjects = subjects;
        mInflater = LayoutInflater.from(context);
    }
    @Override
    public int getCount() {
        return subjects.size();
    }
    @Override
    public Object getItem(int position) {
        return subjects.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = null;
        if (convertView == null){
            //初始化viewholder
            convertView = mInflater.inflate(R.layout.item,parent,false);
            viewHolder = new ViewHolder();
            //初始化view
            viewHolder.textView = (TextView)        

convertView.findViewById(R.id.tv_text);
//绑定tag
convertView.setTag(viewHolder);
}else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.textView.setText(subjects.get(position).getTitle());
return convertView;
}
}
class ViewHolder{
TextView textView;
}
}