Pro Android 4

Dialog Fragments for Older Android

Although the hope is that all older phones will upgrade to Ice Cream Sandwich and therefore be able to take advantage of all the wonderfulness of dialog fragments, the reality is that some older models will stay on Android 1.6, 2.1, and 2.2. To provide dialog fragment support for these phones, Google provides the Fragment Compatibility library. For dialog fragments, you use the same DialogFragment class discussed earlier; just make sure you include the compatibility jar file in your application.