用volley在Genymotion上获取网页源码

XML代码

<?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: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"
    tools:context="com.example.dell.fuwuqicunchu.fuwuqicunchu"
    android:orientation="vertical">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:id="@+id/et_1"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="volleyget"
            android:onClick="volleyget"
            android:layout_weight="1"/>

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="volleypost"
            android:onClick="volleypost"
            android:layout_weight="1"/>
    </LinearLayout>

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/et_2"/>
</LinearLayout>

JAVA代码

package com.example.dell.myfuwuqi;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import java.util.HashMap;
import java.util.Map;

public class webActivity extends AppCompatActivity {

    EditText et_1;
    EditText et_2;

     ProgressDialog progressDialog;

    private android.os.Handler handler = new android.os.Handler(){

        @Override
        public void handleMessage(Message msg) {

           String content = (String)msg.obj;

            et_2.setText(content);

            //progressDialog.dismiss();

        }
    };

    RequestQueue requestQueue;

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

        et_1=(EditText)findViewById(R.id.et_1);
        et_1.setText("http://192.168.1.101:8080/Testweb/testweb.jsp");
        et_2=(EditText)findViewById(R.id.et_2);

        requestQueue =Volley.newRequestQueue(this);

    }

    public void volleyget(View view)
    {
        new Thread(){
            @Override
            public void run() {

               // progressDialog = new ProgressDialog(webActivity.this);

                StringRequest str = new StringRequest(et_1.getText().toString(), new Response.Listener<String>() {
                    @Override
                    public void onResponse(String s) {

                        Message msg = new Message();
                        msg.obj=s;
                        handler.sendMessage(msg);
                    }
                }, new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError volleyError) {
                        Toast.makeText(webActivity.this, "失败", Toast.LENGTH_SHORT).show();
                        progressDialog.dismiss();
                    }
                });

                requestQueue.add(str);

            }
        }.start();

    }

    public void volleypost(View v)
    {
        new Thread(){
            @Override
            public void run() {
               // final ProgressDialog dialog = new ProgressDialog(webActivity.this);

                StringRequest str = new StringRequest(Request.Method.POST, et_1.getText().toString(), new Response.Listener<String>() {
                    @Override
                    public void onResponse(String s) {

                        Message msg = new Message();
                        msg.obj=s;
                        handler.sendMessage(msg);

                    }
                }, new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError volleyError) {

                        Toast.makeText(webActivity.this, "失败", Toast.LENGTH_SHORT).show();
                        //dialog.dismiss();
                    }
                }){
                    @Override
                    protected Map<String, String> getParams() throws AuthFailureError {
                        Map<String,String> map = new HashMap<String,String>();

                        map.put("name","volley");
                        return map;
                    }
                };

                requestQueue.add(str);

                super.run();
            }
        }.start();

    }
}

备注：

1、在4.0之后谷歌强制要求连接网络不能在主线程进行访问。

2、只有主线程（UI线程）才可以更显UI。