save android app string value after close xamarin

Question

There is a way to save string value after the app is closed and re open?

I thinking something like Sqlite but i want to know if there is something easier.

Thanks.

score 1 · Answer 1 · answered Aug 01 '14 at 12:39

1

use shared preferences. shared preferences is a mechanism for saving key value pair of data like the string you have!

use this youtube playlist to learn how to use shared preferences. http://goo.gl/DAnQqr

answered Aug 01 '14 at 12:39

Alireza Ahmadi

5,122
7
40
67

Can I get an example ? – kipo Aug 01 '14 at 12:40
i added the link. watch videos. – Alireza Ahmadi Aug 01 '14 at 12:42
Sadly that video is not very informative, and it focuses on Java, rather than C# as used by Xamarin. – Richard Le Mesurier Oct 31 '14 at 07:26

score 1 · Answer 2 · edited May 23 '17 at 11:49

An easier way to do this for a small amount of settings is to use Android's Shared Preferences functionality. It is simpler to code than implementing a full SQLite database.

In Android, it is called SharedPreferences. You can use that to find many Android java examples which you can port across to Xamarin.

In Xamarin.Android C#, that same functionality comes for the interface ISharedPreferences, which maps to the SharedPreferences java class.

For example, to save your string using C#, you could write something like:

ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences (mContext);
prefs.Edit ().PutString ("key_for_my_string_value", mString).Commit ();

To retrieve it again, you could write something like:

ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences (mContext);
mString= prefs.GetString ("key_for_my_string_value");

More info on ISharedPreferences in my post here:

How do I use SharedPreferences in Xamarin.Android?

save android app string value after close xamarin

2 Answers2

Linked