I have two radio groups and each group has two radiobuttons.
the default value is true (i.e. checked ) for first radiobutton in each group.
When user cliks on any radiobutton and when user comeback from other activities the selections made on these radiogroups/radiobuttons are gone…
how can I save/restore radiogroup/radiobutton selection state ??
here is my java code..for one radiogroup..
final RadioButton radioOn = ( RadioButton )findViewById(
R.id.rbOn );
final RadioButton radioOff = ( RadioButton )findViewById(
R.id.rbOff );
radioOn.setChecked( true );
radioOn.setOnClickListener( auto_lock_on_listener );
radioOff.setOnClickListener( auto_lock_off_listener );
please help.
Best Answer
You need to override onSaveInstanceState(Bundle savedInstanceState) and write the application state values you want to change to the Bundle parameter like this:
The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate and also onRestoreInstanceState where you'd extract the values like this:
You'd usually use this technique to store instance values for your application (selections, unsaved text, etc.).