How to use

getWindow

method

in

com.example.android.apis.app.PresentationActivity$DemoPresentation

/**
 * Sets the preferred display mode id for the presentation.
 */
public void setPreferredDisplayMode(int modeId) {
  mContents.displayModeId = modeId;
  WindowManager.LayoutParams params = getWindow().getAttributes();
  params.preferredDisplayModeId = modeId;
  getWindow().setAttributes(params);
}