Volley使用笔记（二）

JsonRequest的用法与StringRequest相似。

JsonObjectRequest jsonObjectRequest = new JsonObjectRequest("http://m.weather.com.cn/data/101010100.html", null,  
        new Response.Listener<JSONObject>() {  
            @Override  
            public void onResponse(JSONObject response) {  
                Log.d("TAG", response.toString());  
            }  
        }, new Response.ErrorListener() {  
            @Override  
            public void onErrorResponse(VolleyError error) {  
                Log.e("TAG", error.getMessage(), error);  
            }  
        });  
          @Override  
            protected Map<String, String> getParams() throws AuthFailureError {  
        Map<String, String> map = new HashMap<String, String>();  
        map.put("params1", "value1");  
        map.put("params2", "value2");  
        return map;  
    }  

设置POST参数的方法除了getParams()还有一种

 HashMap<String, String> hashMap=new HashMap<String,String>();
        hashMap.put("channelId",channelId);
        hashMap.put("account", account);
        JSONObject jsonParams =new JSONObject(hashMap);
        JsonObjectRequest request=new JsonObjectRequest(Request.Method.POST, packUrl, jsonParams ,vif.loadingListener(),vif.errorListener());

其实可以直接写在构造函数中，添加参数Request.Method.POST，jsonParams