Parse json array android

Question

Hi i\'m trying to parse json array from this url. The json array looks like this.

    [
   {
      \"id\":1,
      \"introtext\":\"\\u041b\\u0438\\u043c\\u04         


        

Answer 1

You can Easily do it using gson library.

Here is the code sample:

Your Entity Class will like:

public class ResponseEntity {
    @SerializedName("id")
    public int id;
    @SerializedName("introtext")
    public String introtext;
    @SerializedName("image")
    public String image;
    @SerializedName("title")
    public String title;
    @SerializedName("catid")
    public String catid;
    @SerializedName("alias")
    public String alias;

}

Now Convert this json Array using GSON library.

Gson gson=new Gson();    
    ResponseEntity[] entities = gson.fromJson(yourResponseAsString.toString(),
          ResponseEntity[].class);

Now you have the entity array at entities.

Thanks.

Answer 2

you will need to make two changes in your current code according to string u have posted here for parsing as Json :

First : change the return type of getJSONfromURL method to JSONArray and return JSONArray from it instead of JSONObject For example :

public JSONArray getJSONfromURL(String url){
    String str_response="response from server";

    // convert response to JSONArray
   JSONArray json_Array=new JSONArray(str_response);

   return json_Array; //<< retun jsonArray
}

Second : change your code as for getting value from JsonArray :

try {
    JSONfunctions j=new JSONfunctions();
    JSONArray jArray = j.getJSONfromURL(url);
    Log.i("log_tag", jArray.toString()); 

     for(int i=0;i<jArray.length();i++){
      JSONObject json_data = jArray.getJSONObject(i);
      String jsonvalues =  json_data.getString("id");
      // .. get all value here
      Log.i("DARE", jsonvalues);  
   }
  }
catch (Exception ex)
   {
    Log.e("log_tag", "Error getJSONfromURL "+ex.toString());           
  }

Answer 3

Of course it doesn't work! You should use json.getJSONArray(...) method for parsing arrays in Json :)