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How to control CheckBox status in preferences window?  RSS feed

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Hello. I'm beginner in Java Android developing. I'm using Eclipse SDK 3.6.1 version. I have a preferences window with two checkbox and one back button.

I want to do this thing: if I push "checkboxPref2", I want to set "checkboxPref" to false. I want that only one checkbox could be checked. This is my preferences.java:

I'm trying to do like that:

But doesn't work. Maybe someone have similar problem?
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In normal Java you would use Radio Buttons instead of check boxes. You then add the two radio buttons to a radio button group (I think that's what it's called - it's a while since I did any Swing) and then the unchecking of one box when you check the other would be handled automatically. Can the Android GUI classes do something similar ?
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