try
            {
                JSONObject json=new JSONObject(result);
                if(json.getString("status").equals("true"))
                {
                    Toast.makeText(LoginActivity.this, "Login Success...", Toast.LENGTH_LONG).show();
                    Intent intent = new Intent(LoginActivity.this,MainActivity.class);
                    startActivity(intent);
                    LoginActivity.this.finish();
                }
                else if(json.getString("status").equals("false"))
                {
                    Toast.makeText(LoginActivity.this, "Invalid username or password", Toast.LENGTH_LONG).show();
                }
                else
                {
                    Toast.makeText(LoginActivity.this, "Please check server connection", Toast.LENGTH_LONG).show();
                }
            }
            catch (JSONException e)
            {
                e.printStackTrace();
            }