android studio fragment still shows activity layout

There are 3 fragments ( android fragment, windows fragment, iOS fragment ) in this example.īelow are the source files of this example. You can watch the youtube video to see how this example behaves. 3. Add Fragment To Activity Dynamically Example. This method should be invoked before Activity.onSaveInstance(), otherwise, activity state loss error maybe occur. transaction.attach() : Attach the view objects to UI.