#Android studio fragment lifecycle android#

The first step in the setup and display of a fragment occurs in the activity’s onCreate method. The following figure shows the sequence of life cycle-related callback method calls that occur on fragments and activities during setup and display:

In addition, fragments provide additional life cycle-related callback methods that relate to the fragment’s relationship with the containing activity. In the setup and display phases, as well as in the hide and teardown phases, fragments provide many of the same life cycle-related callback methods as activities. Applications that do not cooperate effectively with this natural life cycle often crash or behave in some other undesirable manner.Įach fragment instance exists within a single activity therefore, this fragment must cooperate in some way with the activity life cycle.

A simple action, such as a user rotating a device from the portrait to landscape orientation or vice-versa, normally causes the visible activity to be completely destroyed and recreated using the appropriate resources for the new orientation.

#Android studio fragment lifecycle android#

One of the challenges of developing Android applications is to ensure that our applications effectively handle the life cycle of the application’s activities.ĭuring the lifetime of an application, a given activity may be created, destroyed, and recreated many times.