Question

Hello I am writnig an Android app that has two preferences a checkbox and a preferencelist.
When the check box is marked as checked the preferencelist becomes enabled.
I have manage to save the checkbox “checked” status using putBoolean() method.

getPreferenceManager().getSharedPreferences().edit().putBoolean(key, boolean);
getPreferenceManager().getSharedPreferences().edit().commit();

But how do I save the isEnabled value so that when I leave and return it will not reset?

and how does putboolean knows to whice property to set the boolean anyway?

@Override 
public void onPause() { 
    super.onPause(); 
    save(l.isEnabled());
} 

@Override 
public void onResume() { 
    super.onResume(); 
    l.setEnabled(load());
} 

private void save(final boolean b) { 

          //what to put instead of key in order to save the preference list ENABLED sate?? 
          getPreferenceManager().getSharedPreferences().edit().putBoolean(key, b);
    getPreferenceManager().getSharedPreferences().edit().commit();

}

private boolean load(String key) { 
    return getPreferenceManager().getSharedPreferences().getBoolean(key, false);

} 

Answer 1

getPreferenceManager().getSharedPreferences().edit().putBoolean(key, b);
getPreferenceManager().getSharedPreferences().edit().commit();

You should not be calling edit() a second time, as each time you call edit it creates a new instance of the preferenceEditor. Thus your putBoolean is never committed.

This should be

SharedPreferences.Editor prefs = getPreferenceManager()
                                 .getSharedPreferences()
                                 .edit();
prefs.putBoolean(key,b);
prefs.commit();