title: white background under alert dialog box
body: <p>Why am i getting this white background under my alert dialogbox. I been trying to figure out the problem for an hour and had no luck. Can someone please help me? </p>
  
  <p>Also, why is that the left and right sides of the title has a little dark shade.</p>
  
  <p><a href="https://i.stack.imgur.com/0tomG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0tomG.png" alt="enter image description here"></a></p>
  
  <pre><code>protected void onPostExecute(String result) {
      //progressDialog.dismiss();
      try {
          JSONObject json = new JSONObject(result);
          String status = json.getString("status");
          String message = json.getString("message");
          if(status.equals("true")) {
              Intent intent = new Intent(context, HomeActivity.class);
              intent.putExtra(LoginActivity.EXTRA_MESSAGE, status);
              intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
              context.startActivity(intent);
          }
          else{
              AlertDialog.Builder builder = new AlertDialog.Builder(activity);
              builder.setMessage(message)
                     .setTitle("Error")
                     .setNeutralButton("OK", new DialogInterface.OnClickListener() {
                         public void onClick(DialogInterface dialog, int which) {
                             dialog.cancel();
                         }
                     }).create().show();
          }
      } catch (Exception e) {
          e.printStackTrace();
      }
  }
  </code></pre>