Contains the backup and restore functionality available to applications. If a user wipes the data on their device or upgrades to a new Android-powered device, all applications that have enabled backup will restore the user's previous data.
For a detailed guide to using the backup APIs, see the Data Backup developer guide.
All backup and restore operations are controlled by the BackupManager. Each application that would
like to enable backup and preserve its data on remote strage must implement a
backup agent. A backup agent can be built by extending either BackupAgent
or BackupAgentHelper. The BackupAgentHelper class provides a wrapper around BackupAgent that simplifies the procedures to implement a backup agent by
employing backup helpers such as SharedPreferencesBackupHelper and
FileBackupHelper.
The backup APIs let applications:
SharedPreferences and files