volley中网络请求

首先使用Volley类创建 RequestQueue queue = Volley.newRequestQueue(this); 

Making GET Requests

 1 final String url = "http://httpbin.org/get?param1=hello";
 2
 3 // prepare the Request
 4 JsonObjectRequest getRequest = new JsonObjectRequest(Request.Method.GET, url, null,
 5     new Response.Listener<JSONObject>()
 6     {
 7         @Override
 8         public void onResponse(JSONObject response) {
 9                         // display response
10             Log.d("Response", response.toString());
11         }
12     },
13     new Response.ErrorListener()
14     {
15          @Override
16          public void onErrorResponse(VolleyError error) {
17             Log.d("Error.Response", response);
18        }
19     }
20 );
21
22 // add it to the RequestQueue
23 queue.add(getRequest);

Making POST Requests

 1 url = "http://httpbin.org/post";
 2 StringRequest postRequest = new StringRequest(Request.Method.POST, url,
 3     new Response.Listener<String>()
 4     {
 5         @Override
 6         public void onResponse(String response) {
 7             // response
 8             Log.d("Response", response);
 9         }
10     },
11     new Response.ErrorListener()
12     {
13          @Override
14          public void onErrorResponse(VolleyError error) {
15              // error
16              Log.d("Error.Response", response);
17        }
18     }
19 ) {
20     @Override
21     protected Map<String, String> getParams()
22     {
23             Map<String, String>  params = new HashMap<String, String>();
24             params.put("name", "Alif");
25             params.put("domain", "http://itsalif.info");
26
27             return params;
28     }
29 };
30 queue.add(postRequest);

Making PUT Requests

 1 url = "http://httpbin.org/put";
 2 StringRequest putRequest = new StringRequest(Request.Method.PUT, url,
 3     new Response.Listener<String>()
 4     {
 5         @Override
 6         public void onResponse(String response) {
 7             // response
 8             Log.d("Response", response);
 9         }
10     },
11     new Response.ErrorListener()
12     {
13          @Override
14          public void onErrorResponse(VolleyError error) {
15                          // error
16              Log.d("Error.Response", response);
17        }
18     }
19 ) {
20
21     @Override
22     protected Map<String, String> getParams()
23     {
24             Map<String, String>  params = new HashMap<String, String> ();
25             params.put("name", "Alif");
26             params.put("domain", "http://itsalif.info");
27
28             return params;
29     }
30
31 };
32
33 queue.add(putRequest);

Making DELETE Requests

 1 url = "http://httpbin.org/delete";
 2 StringRequest dr = new StringRequest(Request.Method.DELETE, url,
 3     new Response.Listener<String>()
 4     {
 5         @Override
 6         public void onResponse(String response) {
 7             // response
 8             Toast.makeText($this, response, Toast.LENGTH_LONG).show();
 9         }
10     },
11     new Response.ErrorListener()
12     {
13          @Override
14          public void onErrorResponse(VolleyError error) {
15              // error.
16
17        }
18     }
19 );
20 queue.add(dr);

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