android的okHttp的使用

１.增加开源库的支持

compile 'com.squareup.okhttp3:okhttp:3.4.1'

2。在MianActivity中添加

package com.example.administrator.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    TextView responseText;

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


        Button sendRequest = (Button)findViewById(R.id.send_request);
        responseText = (TextView)findViewById(R.id.response_text);
        sendRequest.setOnClickListener(this);

    }

    public void onClick(View v){
        if(v.getId()  == R.id.send_request){
            sendRequestWithOkHttp();
        }
    }

    private void sendRequestWithOkHttp(){
        new Thread(new Runnable() {
            @Override
            public void run() {

                try{
                    OkHttpClient client = new OkHttpClient();
                    Request request = new Request.Builder().url("http://www.baidu.com").build();
                    Response response = client.newCall(request).execute();
                    String responseData = response.body().string();
                    showResponse(responseData.toString());
                }catch (Exception e){
                    e.printStackTrace();
                }
            }
        }).start();
    }

    private void showResponse(final String response){
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                responseText.setText(response);
            }
        });
    }

}

 

3。在Activity_main中添加

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

   <Button
       android:id="@+id/send_request"
       android:text="Send Request"
       android:layout_width="match_parent"
       android:layout_height="wrap_content" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:id="@+id/response_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </ScrollView>

</LinearLayout>

4.配置网络权限

 

<uses-permission android:name="android.permission.INTERNET" />