OkHttp使用笔记

package com.example.louisokhttp;

import android.support.v4.widget.SimpleCursorAdapter.ViewBinder;
import android.support.v7.app.ActionBarActivity;

import java.io.IOException;

import com.squareup.okhttp.Callback;
import com.squareup.okhttp.FormEncodingBuilder;
import com.squareup.okhttp.Headers;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.Response;

import android.annotation.SuppressLint;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

@SuppressLint("NewApi")
public class MainActivity extends ActionBarActivity implements  OnClickListener{

    OkHttpClient mOkHttpClient = new OkHttpClient();
    String url = "https://www.baidu.com/";
    String  result="";
    TextView textView1;
    final int  MSG_WHAT=1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button btnPost = (Button) findViewById(R.id.button1);
        btnPost.setOnClickListener(this);
        Button btnGet = (Button) findViewById(R.id.button2);
        btnGet.setOnClickListener(this);
        Button btnPostAsync = (Button) findViewById(R.id.button3);
        btnPostAsync.setOnClickListener(this);
        Button btnGetAsync = (Button) findViewById(R.id.button4);
        btnGetAsync.setOnClickListener(this);

        textView1=(TextView) findViewById(R.id.textView1);
    }

    private void doPost() throws Exception {
        // TODO Auto-generated method stub
        RequestBody formBody = new FormEncodingBuilder().add("platform", "android").add("name", "bug")
                .add("subject", "XXXXXXXXXXXXXXX").build();

        //当写请求头的时候，使用 header(name, value) 可以设置唯一的name、value。如果已经有值，旧的将被移除，然后添加新的。使用 addHeader(name, value) 可以添加多值（添加，不移除已有的）。
        Request request = new Request.Builder().url(url).header("User-Agent", "OkHttp Headers.java")
                .addHeader("Accept", "application/json; q=0.5").addHeader("Accept", "application/vnd.github.v3+json")
                .post(formBody).build();

        Response response = mOkHttpClient.newCall(request).execute();// execute
        if (response.isSuccessful()) {
            System.out.println(response.code());
            //System.out.println(response.body().string());
            String body=response.body().string();
            System.out.println(body);
            result="doPost|"+response.code()+"|"+body;
            mHandler.sendEmptyMessage(MSG_WHAT);

        }
    }

    private void doPostAsync() {
        // TODO Auto-generated method stub
        RequestBody formBody = new FormEncodingBuilder().add("platform", "android").add("name", "bug")
                .add("subject", "XXXXXXXXXXXXXXX").build();

        Request request = new Request.Builder().url(url).header("User-Agent", "OkHttp Headers.java")
                .addHeader("Accept", "application/json; q=0.5").addHeader("Accept", "application/vnd.github.v3+json")
                .post(formBody).build();

        // enqueue
        mOkHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {

            }

            @Override
            public void onResponse(Response response) throws IOException {
                // NOT UI Thread
                if (response.isSuccessful()) {
                    System.out.println(response.code());

                    //System.out.println(response.body().string());
                    String body=response.body().string();
                    System.out.println(body);
                    result="doPostAsync|"+response.code()+"|"+body;
                    mHandler.sendEmptyMessage(MSG_WHAT);
                }

            }
        });

    }

    private void doGet() throws Exception {
        // TODO Auto-generated method stub
        Request request = new Request.Builder().url(url).build();
        Response response = mOkHttpClient.newCall(request).execute();// execute
        if (response.isSuccessful()) {
            System.out.println(response.code());
            //System.out.println(response.body().string());
            String body=response.body().string();
            System.out.println(body);
            result="doGet|"+response.code()+"|"+body;
            mHandler.sendEmptyMessage(MSG_WHAT);
        }
    }

    private void doGetAsync() {
        // TODO Auto-generated method stub
        Request request = new Request.Builder().url(url).build();
        // enqueue
        mOkHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {

            }

            @Override
            public void onResponse(Response response) throws IOException {
                // NOT UI Thread
                if (response.isSuccessful()) {
                    System.out.println(response.code());
                    //System.out.println(response.body().string());
                    String body=response.body().string();
                    System.out.println(body);
                    result="doGetAsync|"+response.code()+"|"+body;
                    mHandler.sendEmptyMessage(MSG_WHAT);
                }
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }


   Handler mHandler=new Handler(){
       public void handleMessage(Message msg) {
           switch (msg.what) {
        case MSG_WHAT:
            textView1.setText(result);
            break;
        default:
            break;
        }  
           super.handleMessage(msg);
       };
   };

    @Override
    public void onClick(View v) {

        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.button1:

                new Thread(new  Runnable() {
                    public void run() {
                        try {
                        doPost();
                        } catch (Exception e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                }).start();

            break;
        case R.id.button2:
            new Thread(new  Runnable() {
                public void run() {
                    try {
                    doGet();
                    } catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }).start();
            break;
        case R.id.button3:
            doPostAsync();
            break;
        case R.id.button4:
            doGetAsync();
            break;

        default:

            break;
        }

    }
}

demo下载：http://download.csdn.net/detail/richiezhu/9216611

扩展阅读：http://blog.csdn.net/lmj623565791/article/details/47911083