On Sat, May 19, 2012 at 1:28 AM, Perry168 <[email protected]> wrote:

> When the user clicks the key1 to ‘true’ , the key2 will be active for use.
> Otherwise key2 will keep in not selectable. ****
>
> Can anyone tell me how doing it?
>

http://developer.android.com/reference/android/preference/Preference.html#attr_android:dependency

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TreKing <http://sites.google.com/site/rezmobileapps/treking> - Chicago
transit tracking app for Android-powered devices

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