How do I solved java.lang.String cannot converted to JSON object? [duplicate]

Question

I have lerant about android and MySQL, and I have view about this web:http://codeoncloud.blogspot.tw/2013/07/android-mysql-php-json-tutorial.html

but I don't know how to solve this problem: enter image description here

<?php  
$host="sql113.byethost14.com"; //replace with database hostname 
$username=" xxx  "; //replace with database username 
$password=" xxx  "; //replace with database password 
$db_name="b14_16972597_food"; //replace with database name

$con=mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");
$sql = "select * from emp_info"; 
$result = mysql_query($sql);
$json = array();

if(mysql_num_rows($result)){
while($row=mysql_fetch_assoc($result)){
$json['emp_info'][]=$row;
}
}
mysql_close($con);
echo json_encode($json);  
?>

The response is a html page, that's why you have that exception. Could you post the entire response? Check it in your browser. — cylon
– cylon, Commented Dec 27, 2015 at 15:41

meda · Accepted Answer · 2015-12-29 14:57:31Z

0

You solve this by returning a valid JSON string.

You can use a service to check its validity:

http://jsonlint.com/

Your script should return JSON and only a JSON string nothing else.

To debug this in your app you should log the string and check it before even attempting to convert it JSON.

answered Dec 29, 2015 at 14:57

meda

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