Question

I add a RadioButton in my layout.

It is unchecked to begin with. And when I click on it , it becomes checked (as shown in emulator). But when when i click on it again, it does not become unchecked again?

<RadioButton android:checked="false"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/option1"/>

Answer 1

If you are only using one radio box for checking on and off, maybe you should use checkbox or toggle button instead.

http://developer.android.com/resources/tutorials/views/hello-formstuff.html

Scroll down and see checkbox and toggle button.

When using radios you usually have more than one and choose between them. Like easy, medium, hard.