Android 5.0

If you are using the RuleBasedCollator in your app, you may get NullpointerException for your collator object if you do not properly initialize its constructor with a correctly formatted rule string. In Android 5.0 and later, the constructor expects to get a rule string that has a reset character in the first rule chain. Refer to the documentation: Note: earlier versions of RuleBasedCollator up to and including Android 4.4 (KitKat) allowed the omission of the reset from the