Question

这是我的第一个网址

http://www.adayalangal.com/wp-json/wp/v2/posts/?page=1

那里最多有8页...... `

JsonArrayRequest productReq = new JsonArrayRequest(url, new Response.Listener<JSONArray>()
        {

            @Override
            public void onResponse(JSONArray response) {
                Log.d(TAG, String.valueOf(response));
                System.out.print(response);
                pDialog.hide();
                JSONObject obj;
                DataModel dataModel;
                JSONObject uniObject;
                //code for retreiving web content


                    }


            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                VolleyLog.d(TAG, "Error: " + error.getMessage());
                pDialog.hide();
                //hidePDialog();

            }
        });

        // Adding request to request queue
        AppController.getInstance().addToRequestQueue(productReq);`

当我运行这个时，我只得到第一页的内容...我想要检索内容，直到来自网址的响应变为空...我怎么能实现这个

Answer 1

为api调用创建单独的方法，如下所示：

定义一个检查前一个响应是否为空的变量

boolean isPreviousResponseWasEmpty = false;

private void getData(String pageNumber){
String url = url + pageNumber ;
JsonArrayRequest productReq = new JsonArrayRequest(url, new Response.Listener<JSONArray>()
        {

            @Override
            public void onResponse(JSONArray response) {
                Log.d(TAG, String.valueOf(response));
                System.out.print(response);
                pDialog.hide();
                parseData(response.toString());
                    }


            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                VolleyLog.d(TAG, "Error: " + error.getMessage());
                pDialog.hide();
                //hidePDialog();

            }
        });

        // Adding request to request queue
        AppController.getInstance().addToRequestQueue(productReq);`
}

创建单独的方法来解析您的服务器响应：

private void parseData(String serverResponse){
if (serverResponse!=null && !serverResponse.equals("")){
                JSONObject obj;
                DataModel dataModel;
                JSONObject uniObject;
                //code for retreiving web content

}else{
 if (!isPreviousResponseWasEmpty){
   isPreviousResponseWasEmpty = false;
   getData(incrementedPageNumber);
  }else{
     isPreviousResponseWasEmpty = true;
  }
}

}

如何在android中使用Jsonarray从多个url中检索响应

1 个答案: