Android网络请求之Volley框架

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

public class MyApplication extends Application {
    public static RequestQueue queue;
    @Override
    public void onCreate() {
        super.onCreate();
        queue = Volley.newRequestQueue(getApplicationContext());
    }
    public static RequestQueue getHttpQueue() {
        return queue;
    }
}

rivate void volley_Get() {
        final String URL_GET = url+"phone="+phoneNum+"&key="+APIKEY;
        StringRequest request = new StringRequest(Method.GET, URL_GET, new Listener<String>() {
            @Override
            public void onResponse(String response) {
                tvGet.setText(praseResponse(response));
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError arg0) {
                Toast.makeText(MainActivity.this, "网络请求失败", Toast.LENGTH_LONG).show();
            } 
        });
        request.setTag(GET_TAG);
        MyApplication.getHttpQueue().add(request);
    }

private void volley_Post() {
        StringRequest request = new StringRequest(Method.POST, url, new Listener<String>() {
            @Override
            public void onResponse(String response) {
                tvPost.setText(praseResponse(response));
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError arg0) {
                Toast.makeText(MainActivity.this, "网络请求失败", Toast.LENGTH_LONG).show();
            } 
        }){
            protected Map<String, String> getParams() throws com.android.volley.AuthFailureError {
                HashMap<String, String> map = new HashMap<String, String>();
                map.put("phone", phoneNum);
                map.put("key", APIKEY);
                return map;
            }
        };
        request.setTag(POST_TAG);
        MyApplication.getHttpQueue().add(request);
    }

//将JSON数据格式化显示
    private String praseResponse(String response){
        StringBuffer result = new StringBuffer();    
        int begin = response.indexOf(‘{‘, 1);
        String str = response.substring(begin);
        result.append("省份: "+praseJSON(str, "province")+"\n");
        result.append("城市: "+praseJSON(str, "city")+"\n");
        result.append("区号: "+praseJSON(str, "areacode")+"\n");
        result.append("邮编: "+praseJSON(str, "zip")+"\n");
        result.append("运营商: "+praseJSON(str, "company")+"\n");
        result.append("卡类型: "+praseJSON(str, "card")+"\n");
        return result.toString();
    }
    private String praseJSON(String str, String str1) {
        try {
            JSONObject jb = new JSONObject(str);
            System.out.println(str);
            System.out.println(str1);
            return jb.getString(str1);
        } catch (JSONException e) {
            e.printStackTrace();
            System.out.println("wsm");
            return null;
        }
    }