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 can restore the user's previous data when the application is reinstalled.

For more information, see the Data Backup guide.

All backup and restore operations are controlled by the {@link android.app.backup.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 {@link android.app.backup.BackupAgent} or {@link android.app.backup.BackupAgentHelper}. The {@link android.app.backup.BackupAgentHelper} class provides a wrapper around {@link android.app.backup.BackupAgent} that simplifies the procedures to implement a backup agent by employing backup helpers such as {@link android.app.backup.SharedPreferencesBackupHelper} and {@link android.app.backup.FileBackupHelper}.

The backup APIs let applications:

• Perform backup of arbitrary data to remote storage
• Easily perform backup of {@link android.content.SharedPreferences} and files
• Restore the data saved to remote storage