Download the fragments.zip app that go with these notes.FragmentManager and Fragment Transactions.Managing state between orientation flips.How does Android know which fragment_layout.xml to use?.Landscape mode processing: The tale of one activity and two fragments.Portrait mode processing: The tale of two activities and two fragments.In this lecture, we will use the case study of the Fragment App to best understand how code can build dynamic layouts and respond to these types of events. The FragmentManager is responsible for adding, replacing, removing fragments dynamically. In portrait mode an app may show itself in a different manner to say landscape. Dynamic Layouts using the Fragment Managerįragments can be used to respond to user input, varying form factors (phone or tablet) and other issues, such as, the orientation of the device.
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