The Configuration Change Process
The Android operating system keeps track of the current configuration of the device it's running on. Configuration includes lots of factors, and new ones get added all the time. For example, if a device is plugged into a docking station, that represents a change in the device configuration. When a configuration change is detected by Android, callbacks are invoked in running applications to tell them a change is occurring, so an application can properly respond to the change. We'll discuss those callbacks a little later, but for now let's refresh your memory with regard to resources.
One of the great features of Android is that resources get selected for your activity based on the current configuration of the device. ...
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