togglebutton - Android toggle button state -

hi i've activity shows toggle button. issue that, when press button on device , come activity, state of button reset.

how can make activity "remember" state of button through entire life cycle?

do when in oncreate() or onresume() per requirement :

sharedpreferences preferences = this.getsharedpreferences(constants.sendevent_preference,context.mode_private); if(preferences.getboolean(constants.sendevent_preference_save_library, false))             lib.setchecked(true); 

and in oncheckedchanged method :

if (buttonview == lib) {             if (ischecked) {                 prefseditor.putboolean(constants.sendevent_preference_save_library,                         true);                 prefseditor.commit();             } else {                 prefseditor.putboolean(constants.sendevent_preference_save_library,                         false);                 prefseditor.commit();             } }