com.android.volley.parse error org.json.jsonexception value of type java.lang.string cannot be converted to jsonArray in Android Volley

Question

When I run this program I get this error . I don't know how to solve . Help me finding it Please.

This is my json_encode php code api.

  $i=0;
  while ($row = $result->fetch_assoc())
  {
   $array[$i]=array(
        "news_id" => $row["news_id"], 
        "news_title" => $row["news_title"], 
        "news_abstract" => $row["news_abstract"], 
        "news_content" => $row["news_content"], 
        "news_date" => $row["news_date"], 
        "news_link" => $row["news_link"], 
        "news_image_link" => $row["news_image_link"], 
        "sources_name" => $row["sources_name"], 
        "category_name" => $row["category_name"],
        "news_visible" => $row["news_visible"]
    );
    $i++;
  }
    $json=json_encode($array, JSON_HEX_TAG|JSON_HEX_APOS);

and my JsonArrayRequest of Android Volley JsonArrayRequest.

JsonArrayRequest newsRequest = new JsonArrayRequest( Url.getUrlJson(), new  Response.Listener<JSONArray>(){
        @Override
        public void onResponse( JSONArray response ){
            Log.d( TAG, response.toString() );
            hidePDialog();

            // Parsing json
            for( int i = 0; i < response.length(); i++ ){
                try{
                    JSONObject obj = response.getJSONObject( i );
                    News news = new News();
                     if( "1".equals( obj.getString( "news_visible" )) ){

                        news.setNews_id( obj.getString( "news_id" ) );
                        news.setNews_title( obj.getString( "news_title" ) );
                        news.setNews_abstract( obj.getString( "news_abstract" ) );
                        news.setNews_content( obj.getString( "news_content" ) );
                        news.setNews_date( obj.getString( "news_date" ) );
                        news.setNews_link( obj.getString( "news_link" ) );
                        news.setNews_image_link( obj.getString( "news_image_link" ));
                        news.setSources_name( obj.getString( "sources_name" ) );
                        news.setCategory_name( obj.getString( "category_name" ) );
                    }
                    newsList.add( news );
                }
                catch( JSONException e ){
                    e.printStackTrace();
                }

can you show your json structure?

SeanChense
– SeanChense

2014-12-10 11:58:52 +00:00
Commented Dec 10, 2014 at 11:58 — SeanChense
– SeanChense, Commented Dec 10, 2014 at 11:58

Community · Accepted Answer · 2017-05-23 11:52:04Z

1

Content Type

<?PHP
header('Content-Type: application/json');

See Returning JSON from a PHP script.

Byte Order Marker

PHP is prone to return a BOM at the beginning of the response, when the .php file or any of its includes have UTF-8 character encoding.

For more information, see this W3C answer and section UTF-8 BOM in this post.

One suggested way to prevent PHP from prepending a BOM is to change the character set of your php file(s) from UTF-8 to ASCII or ISO-8859-15.

edited May 23, 2017 at 11:52

CommunityBot

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answered Dec 10, 2014 at 15:32

gknicker

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9 Comments

gknicker Over a year ago

Yes, you're getting what appears to be JSON data, but it doesn't conform to RFC 4627 (JSON specification). Maybe you can use a JSON validator to find the offending content. If you're still getting the same error message, try using as String response listener Response.Listener<String> instead of Response.Listener<JSONArray>.

soduncu Over a year ago

but i will receive json array , if i receive string how can i do parsing. example: JsonObject str=news JsonObject(response); JsonArray array=str.getJsonArray(); this is mistake.

gknicker Over a year ago

I agree, it would be a mistake. The invalid characters are the first three characters in the response body, before the JSON array starts. They are BOM (byte order marker) from PHP. For more information, find UTF-8 BOM in this answer stackoverflow.com/questions/8028957/…

soduncu Over a year ago

how can i edit character problem in php? i understood, normally i received json data but its telling me string because of character problem.

gknicker Over a year ago

Save your .php source file (and any includes) with ASCII encoding instead of unicode.

|

sam08 · Accepted Answer · 2014-12-10 12:12:07Z

0

The response you are getting is a string and you are trying to assing it to jsonArray

answered Dec 10, 2014 at 12:12

sam08

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1 Comment

soduncu Over a year ago

i know this print is string, but how can i create json data in php

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