Storing small amount of data

Question

I am building a android app and I would like to store a 4 digit number (pin), without setting up any database.

That 4 digit number would be password for the app.

I know how to set up the SQLite database but it seems to much work for just 4 digit number

Possible duplicate of [Android Shared preferences example](http://stackoverflow.com/questions/23024831/android-shared-preferences-example) — SripadRaj, Oct 15 '16 at 09:16

score 1 · Answer 1 · answered Oct 15 '16 at 09:18

Android SharedPreferences will do the job:

var prefs = PreferenceManager.GetDefaultSharedPreferences(Application.Context);
var editor = prefs.Edit();
editor.PutString("MyFourDigitString", "1234");
editor.Apply();

var MyFourDigitString = prefs.GetString("MyFourDigitString", "0000"); // 0000 = default value

score 0 · Answer 2 · answered Oct 15 '16 at 09:19

To save information you have following options:

SQLite Database
Shared Preference
File System

If you don't want to use the SQLite Database, then go for Shared Preference. But when user remove data from settings, then it will remove.

Please read the following URL for more details.

https://developer.android.com/training/basics/data-storage/index.html

https://developer.android.com/guide/topics/data/data-storage.html

Cheers!!!

score 0 · Answer 3 · edited May 23 '17 at 12:01

0

Use Shared Preferences. As you are storing password in preferences, so it must be stored as encrypted data. Example is here

edited May 23 '17 at 12:01

Community

1
1

answered Oct 15 '16 at 09:20

Arbaz Alam

1,036
13
23

Storing small amount of data

3 Answers3