Final answer:
To restore saved values in your app, override the onRestoreInstanceState method. This method uses the Bundle provided from onSaveInstanceState to recover your app's state, ensuring a seamless user experience during configuration changes or after reclamation of system resources.
Step-by-step explanation:
To restore values you have saved in your app, you can override the onRestoreInstanceState method. This method is called when the activity is being re-initialized from a state previously saved by the onSaveInstanceState method. The onRestoreInstanceState method provides you with a Bundle containing the saved state information, which you can use to recover your app's state.
The process typically involves checking for the presence of saved state data in the Bundle and then restoring the values to their respective views or variables. For example, if you have saved text from an EditText widget, you can retrieve and set its content in the onRestoreInstanceState.
This ensures that when a user returns to your app after a configuration change such as screen rotation, or after the application has been in the background and system resources need to be reclaimed, the app appears as the user last left it.
Remember that if you override onRestoreInstanceState, you should also override onSaveInstanceState to save your app's state. This preservation and restoration of state helps in providing a seamless user experience. Developing an understanding of the activity lifecycle is essential for effectively using these methods in Android app development.