Disable some/all radio buttons in Android preference

I have searched and searched Google, Stack Overflow, etc. 开发者_JAVA百科for an answer to this and failed!

I wish to programatically disable/enable selected radio buttons in a single Android preference.

For example, there is a radio button preference with 6 choices, but depending on some condtions (not related to the preferences) some of them will be unselectable and should be shown as disabled.

I can see how we can disable complete radio button groups, but not individual radio buttons

Can Anyone help?

AFAIK, this is not supported by the built-in ListPreference. You are welcome to write your own custom Preference, or perhaps extend ListPreference, where you supply your own Adapter and disable certain items that way.