okhttp之get请求

最新推荐文章于 2024-10-12 09:42:14 发布

原创最新推荐文章于 2024-10-12 09:42:14 发布 · 663 阅读

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在android studio中新建项目，打开build.gradle文件，在dependencies中添加：

compile 'com.squareup.okhttp:okhttp:2.6.0'

然后点击上方出现的黄色提示条：Sync Now，然后会看到下面进度条自动加载okhttp需要的jar,进度条加载成功后，点击项目名称右键Open Module Setting，可以看到项目已经添加上了com.squareup.okhttp:okhttp:2.6.0。

1.修改activity_main.xml文件，添加一个按钮，点击事件是doGet：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.imooc.sample.MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="GET"
        android:onClick="doGet"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
</LinearLayout>

2.在MainActivity同一包中新建L类，用于封装日志打印操作：

package com.imooc.sample;

import android.util.Log;

/**
 * Created by lsk on 2017/1/5.
 */

public class L {
    private  static  final  String TAG="Imooc_okhttp";
    private  static  boolean debug=true;
    public  static  void  e(String msg){
        if(debug){
            Log.e(TAG,msg);//打印日志信息
        }
    }
}

3.在MainActivity.java中添加doGet()方法：

package com.imooc.sample;

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

import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void doGet(View view){
        //1拿到okhttpclient对象
        OkHttpClient okHttpClient=new OkHttpClient();
        //2.构造request对象
        Request.Builder builder=new Request.Builder();

        Request request=builder.get().url("http://www.imooc.com/").build();

        //3.将Request封装为call
        Call call=okHttpClient.newCall(request);
        //4.执行call
        //Response response=call.execute();
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {
                L.e("onFailure："+e.getMessage());
                e.printStackTrace();
            }

            @Override
            public void onResponse(Response response) throws IOException {
                L.e("onResponse:");
                String res=response.body().toString();
                L.e(res);
            }
        });
    }

}