Volley请求

Main7Activity.java

package com.example.m1;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;

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

public class Main7Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main7);
        volley_Get();
    }

    private void volley_Get() {
        String url = "http://www.imooc.com/api/teacher?type=4&num=30";
        /**
         * StringRequest(int method, String url,
         * Listener<String> listener, ErrorListener errorListener)
         *  @method 请求方法
         *  @url请求路径，
         *  @Listener请求成功的监听的回调，
         *  @ErrorListener请求失败的监听回调
         */
        StringRequest request = new StringRequest(Request.Method.GET,url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Log.i("TAG", "onResponse:成功了");
                Toast.makeText(Main7Activity.this,"请求成功volleyGetStringMonth"+response,
                        Toast.LENGTH_SHORT).show();
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.i("TAG","onErrorResponse:失败了");
            }
        });
        //设置请求标签用于加入全局队列后,方便找到
        request.setTag("abcGet");
        //加入到全局队列
        MyApplication.getHttpQueues().add(request);
    }
}

MyApplication.java

package com.example.m1;

import android.app.Application;

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

public class MyApplication extends Application {
    public static RequestQueue queues;

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

    /**
     * 建立好请求队列
     * @return
     */
    public static  RequestQueue getHttpQueues(){
        return queues;
    }
}