android 网络框架 volley 初识

volley已经出来一年多了，目前的市场基本和android async http持平，下面我给出volley的简单用法

首先在application中创建一个公共的请求队列：

package com.example.xuan.netvolleydemo;

import android.app.Application;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.Volley;


public class MyApplication extends Application {

    public static RequestQueue requestQueue;

    public static RequestQueue getRequestQueue() {
        return requestQueue;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        requestQueue= Volley.newRequestQueue(getApplicationContext());
    }

}

1：GET请求

 private void volley_get() {
        String url = "http://apis.juhe.cn/mobile/get?phone=15001099630&key=335adcc4e891ba4e4be6d7534fd54c5d";
        StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String s) {
                Toast.makeText(context, "res:" + s, Toast.LENGTH_SHORT).show();
            }

        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                Toast.makeText(context, "error:" + volleyError, Toast.LENGTH_SHORT).show();
            }

        });
        request.setTag(get_tag);
        MyApplication.getRequestQueue().add(request);
    }

2：POST请求

  private void volley_post() {
        String url = "http://apis.juhe.cn/mobile/get?";
        StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String s) {
                Toast.makeText(context, "res:" + s, Toast.LENGTH_SHORT).show();
            }

        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                Toast.makeText(context, "error:" + volleyError, Toast.LENGTH_SHORT).show();
            }

        }) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {


                Map<String, String> params = new HashMap<String, String>();
                params.put("phone", "15001099630");
                params.put("key", "335adcc4e891ba4e4be6d7534fd54c5d");
                //return super.getParams();
                return params;
            }
        };
        request.setTag(post_tag);
        MyApplication.getRequestQueue().add(request);
    }

全部代码:

package com.example.xuan.netvolleydemo;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.widget.Toast;

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

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


public class MainActivity extends Activity {

    private static String get_tag = "getTag";
    private static String post_tag = "postTag";
    private Context context;

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

       // volley_get();
        volley_post();
    }

    private void volley_get() {
        String url = "http://apis.juhe.cn/mobile/get?phone=15001099630&key=335adcc4e891ba4e4be6d7534fd54c5d";
        StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String s) {
                Toast.makeText(context, "res:" + s, Toast.LENGTH_SHORT).show();
            }

        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                Toast.makeText(context, "error:" + volleyError, Toast.LENGTH_SHORT).show();
            }

        });
        request.setTag(get_tag);
        MyApplication.getRequestQueue().add(request);
    }

    private void volley_post() {
        String url = "http://apis.juhe.cn/mobile/get?";
        StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String s) {
                Toast.makeText(context, "res:" + s, Toast.LENGTH_SHORT).show();
            }

        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                Toast.makeText(context, "error:" + volleyError, Toast.LENGTH_SHORT).show();
            }

        }) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {


                Map<String, String> params = new HashMap<String, String>();
                params.put("phone", "15001099630");
                params.put("key", "335adcc4e891ba4e4be6d7534fd54c5d");
                //return super.getParams();
                return params;
            }
        };
        request.setTag(post_tag);
        MyApplication.getRequestQueue().add(request);
    }

    @Override
    protected void onStop() {
        super.onStop();
        MyApplication.getRequestQueue().cancelAll(get_tag);
        MyApplication.getRequestQueue().cancelAll(post_tag);
    }
}