How to detect Fragment change and change orientation

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http://stackoverflow.com – I have this Activity container that will change fragments accordingly during the usage of the application. public class MyTravelogueActivity extends SherlockFragmentActivity { //codes here } Can I ask if it's possible to check that if the current Fragment is of a MapFragment class, i want to change the orientation to LANDSCAPE only? And when I click on the back button or navigate somewhere else, orientation should go back to portrait. Currently all the fragments are displayed in portrait mode... (HowTos)