Volley Library Networkdispatcher.run Error

In my program there is NetworkDispatcher.run error I am using volley library. my program part is .I done all the way but nothing worked please helpme to do my program.I searced thr

Solution 1:

The error is saying that you are getting NullPointerException.

That means the variables you are using in this code is null at runtime.

Solution 2:

this error often occur send data to server error

try to put hard coded value in this code to make sure there is no any server error

publicMap<String, String> getParams()
              {
                Map<String, String> params = newHashMap<String, String>();
                params.put("rollno","1234");
                params.put("password","abcd");
                return params;
                  }
                };

if its working then you should debug to make sure this parameter getting value

params.put("id",id);
              params.put("pwd",spwd);

Solution 3:

I got it. after else if(whois.equals("RT")){ i forgot to put id = susr.substring(susr.length() - 9);

Mainly this NetworkDispatcher.run error occurs due to null value passed into getParams() method of volley library. So we must be aware about passing values to getParams() method.