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3<p>Contains the backup and restore functionality available to
4applications. If a user wipes the data on their device or upgrades to a new Android-powered
5device, all applications that have enabled backup can restore the user's previous data when the
6application is reinstalled.</p>
7
8<p>For more information, see the <a
9href="{@docRoot}guide/topics/data/backup.html">Data Backup</a> guide.</p>
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12<p>All backup and restore operations are controlled by the {@link
13android.app.backup.BackupManager}. Each application that would
14like to enable backup and preserve its data on remote storage must implement a
15backup agent. A backup agent can be built by extending either {@link android.app.backup.BackupAgent}
16or {@link android.app.backup.BackupAgentHelper}. The {@link
17android.app.backup.BackupAgentHelper} class provides a wrapper around {@link
18android.app.backup.BackupAgent} that simplifies the procedures to implement a backup agent by
19employing backup helpers such as {@link android.app.backup.SharedPreferencesBackupHelper} and
20{@link android.app.backup.FileBackupHelper}.</p>
21
22<p>The backup APIs let applications:</p>
23<ul>
24  <li>Perform backup of arbitrary data to remote storage</li>
25  <li>Easily perform backup of {@link android.content.SharedPreferences} and files</li>
26  <li>Restore the data saved to remote storage</li>
27</ul>
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