Saving data in application

Question

I have made an application. It\'s a button that shows the time you have pressed it. Every time I \"kill\" the application, the timer starts at 0 again (naturally). How can I mak

Answer 1

To elaborate on @2Dee's answer:

SharedPreferences prefs= getSharedPreferences("prefs", Context.MODE_PRIVATE);
// We use an editor to insert values in SharedPreferences
Editor editor = prefs.edit(); 
// Saving the values
editor.putLong("myTime", time); 
// Committing the changes
editor.commit(); 

can go into the

protected void onDestroy();

method. This method can be overloaded in an Activity to be called as the activity is destroyed (killed, closed, etc) so that any data may be saved (which is what you want to do).

Likewise,

SharedPreferences prefs= getSharedPreferences("prefs", Context.MODE_PRIVATE);
time = sharedpreferences.getLong("myTime", 0l);

can go into the

protected void onCreate(Bundle savedInstanceState);

method. This method is called when the activity is first created. This will set your time to the saved value (defaulting to 0 if there is none).

If for some reason these need to be called at different times (such as later or earlier in the Activity's lifecycle) you can read more about it here.

If you like this answer, please upvote 2Dee's answer as well. Some of the code is literally copy/pasted from there.

Happy Coding! Leave a comment if you have more questions.