How to stay logged in for Android?

It won't stay logged in if I close app from background Android

• I am working on Android app where user can log in. In a login dialog they can choose to stay logged in and if they do, it will save their info, here is a code: public static void saveUserInfo(Context context, String userId, String username, String password, List<String> roleList) { StringBuilder roleBuilder = new StringBuilder(); int rolesLength = roleList.size(); String role; for (int i = 0; i < rolesLength; i++) { if (i > 0) { roleBuilder.append(","); } role = (String) roleList.get(i); roleBuilder.append(role); } SharedPreferences preferences = context.getSharedPreferences(Utils.USER, Context.MODE_PRIVATE); SharedPreferences.Editor editor = preferences.edit(); if (!TextUtils.isEmpty(userId)) { editor.putString(Utils.USER_ID, userId); } if (!TextUtils.isEmpty(username)) { editor.putString(Utils.USER_NAME, username); } if (!TextUtils.isEmpty(password)) { //Encrypt password before saving String encryptedPassword = null; try { encryptedPassword = Encrypt.encrypt(Utils.USER_MASTER, password); } catch (Exception e) { e.printStackTrace(); } editor.putString(Utils.USER_PASSWORD, encryptedPassword); } String rolesString = roleBuilder.toString(); if (!TextUtils.isEmpty(rolesString)) { editor.putString(Utils.USER_ROLES, rolesString); } editor.commit(); } If you close the app and open it again, user will stay logged in, which is what I want. Where I have a problem is if user closes app from background (highlighted button in image), than when it open it again, user is logged out. Is there a way to store information that even if you close app from background, you can still have stored those information?

• Answer:

  You might want to implement your own authenticator. It will handle all the login processes for you. Users may create an account in Android's account management. You'll store passwords in a secure storage. It's easy to use a token instead of the plain password. One login for multiple apps. Don't get scared about the extra effort, http://udinic.wordpress.com/2013/04/24/write-your-own-android-authenticator/ about it.