String cannot be converted to JSONArray

Question

I am trying to get data from a php file.

This is my PHP code:

$sql=mysql_query(\"select * from `tracking`\");
while($row=mysql_fetch_assoc($sql))
$output         


        

Answer 1

Put this lines:

        while(result.charAt(0)!='[')  //or result.charAt(0)!='{'
        {
            result = result.substring(1);
            Log.d("Tag1", "remove 1st char");

        }

after:

        result = sb.toString();

To become like this:;

        result = sb.toString();

        while(result.charAt(0)!='[')
        {
            result = result.substring(1);
            Log.d("Tag1", "remove 1st char");

        }

Answer 2

I found what was wrong with JSON. I found at the beginning a character "?" added somewhere in the code and it was not visible until I stored the logCat entry to a file. So I added the code line and it works fine now.

result = result.substring(1);

I hope it may help someone in the future thanx to Waqas