SharedPreferencesBackupHelper

open class SharedPreferencesBackupHelper : BackupHelper

import android.app.backup.BackupAgentHelper;
  import android.app.backup.SharedPreferencesBackupHelper;
 
  public class MyBackupAgent extends BackupAgentHelper {
      // The names of the SharedPreferences groups that the application maintains.  These
      // are the same strings that are passed to <code><a docref="android.content.Context$getSharedPreferences(kotlin.String, kotlin.Int)">Context#getSharedPreferences(String, int)</a></code>.
      static final String PREFS_DISPLAY = "displayprefs";
      static final String PREFS_SCORES = "highscores";
 
      // An arbitrary string used within the BackupAgentHelper implementation to
      // identify the SharedPreferenceBackupHelper's data.
      static final String MY_PREFS_BACKUP_KEY = "myprefs";
 
      // Allocate a helper and install it.
      public void onCreate() {
          SharedPreferencesBackupHelper helper =
                  new SharedPreferencesBackupHelper(this, PREFS_DISPLAY, PREFS_SCORES);
          addHelper(MY_PREFS_BACKUP_KEY, helper);
      }
  }