For some of the application, we need to have a fixed orientation at the start-up. For example, a car racing game may expect to have a the landscape orientation instead of the portrait, and it should be fixed instead of being automatically changing the orientation when a phone's orientaton is changed.
For some of the application, we need to have a fixed orientation at the start-up. For example, a car racing game may expect to have a the landscape orientation instead of the portrait, and it should be fixed instead of being automatically changing the orientation when a phone's orientaton is changed.