During the app’s execution, the user could change the device’s configuration by rotating the device or sliding out a hard keyboard. For a good experience, the app should continue operating smoothly through such configuration changes. When the system calls onCreate
, it passes a Bundle argument containing the Activity
’s saved state, if any. Typically, you save state in Activity
methods onPause
or onSaveInstanceState
(demonstrated in later apps). Line 38 calls the superclass’s onCreate
method, which is required when overriding onCreate
.