private void handleImportDatabase() {
    ApplicationExportManager exportManager = new ApplicationExportManager(this);
    ApplicationExportListener listener =
        new ApplicationExportManager.ApplicationExportListener() {
          @Override
          public void onPrepareForImport() {
            initializeWithMasterSecret(null);

            Intent clearKeyIntent =
                new Intent(
                    KeyCachingService.CLEAR_KEY_ACTION,
                    null,
                    ConversationListActivity.this,
                    KeyCachingService.class);
            startService(clearKeyIntent);
          }
        };

    exportManager.setListener(listener);
    exportManager.importDatabase();
  }
 private void handleExportDatabase() {
   ApplicationExportManager exportManager = new ApplicationExportManager(this);
   exportManager.exportDatabase();
 }