OkHttp的使用

package com.yuanlei.okthhpdemo;

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {
    private Button btnGet, btnPost;
    private TextView tvContent;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnGet = (Button) findViewById(R.id.btn_get);
        btnPost = (Button) findViewById(R.id.btn_post);

        tvContent = (TextView) findViewById(R.id.tv_content);

        btnGet.setOnClickListener(myOnClickListener);
        btnPost.setOnClickListener(myOnClickListener);
    }

    private void doGet() {
        //1、拿到OkHttpClient对象
        OkHttpClient okHttpClient = new OkHttpClient();

        //2、构造Request
        //使用聚合数据的号码归属地接口
        //http://apis.juhe.cn/mobile/get?phone=13666666666&key=6dee1e2355424eb4d1949b2d7037bfc6
        Request.Builder builder = new Request.Builder();
        Request request = builder.get().url("http://apis.juhe.cn/mobile/get?phone=13666666666&key=6dee1e2355424eb4d1949b2d7037bfc6").build();


        //3、将Request封装为Call
        Call call = okHttpClient.newCall(request);

        //4、执行
        execute(call);
    }

    private void doPost() {
        //1、拿到OkHttpClient的对象
        OkHttpClient okHttpClient = new OkHttpClient();

        //2、构造Request
        //使用聚合数据的号码归属地接口
        //http://apis.juhe.cn/mobile/get?phone=13666666666&key=6dee1e2355424eb4d1949b2d7037bfc6
        //okhttp3.FormBody instead of FormEncodingBuilder.（OkHttp3.x，FormEncodingBuilder已被FormBody取代）
        FormBody formBody = new FormBody.Builder()
                .add("phone", "13666666666")
                .add("key", "6dee1e2355424eb4d1949b2d7037bfc6")
                .build();
        Request request = new Request.Builder()
                .url("http://apis.juhe.cn/mobile/get?")
                .post(formBody)
                .build();

        //3、将Request封装为Call
        Call call = okHttpClient.newCall(request);

        //4、执行
        execute(call);

    }


    private void execute(Call call) {
        //1、直接执行得到响应结果response
        // Response response = call.execute();

        //2、异步执行
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.d("onFailure", e.getMessage());
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String res = response.body().string();
                Log.d("onResponse:", res);

                Message msg = new Message();
                msg.obj = res;
                handler.sendMessage(msg);
            }
        });
    }


    private View.OnClickListener myOnClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.btn_get:
                    doGet();
                    break;
                case R.id.btn_post:
                    doPost();
                    break;
            }

        }
    };

    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            tvContent.setText(msg.obj.toString());
        }
    };
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">


    <Button
        android:id="@+id/btn_get"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Get"
        android:textAllCaps="false" />

    <Button
        android:id="@+id/btn_post"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Post"
        android:textAllCaps="false" />


    <TextView
        android:id="@+id/tv_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="返回结果" />

</LinearLayout>