message: Called the onPress
diff: @@ -13,7 +13,7 @@ class BackButton extends React.Component<{onPress: () => boolean}> {
  BackHandler.removeEventListener('hardwareBackPress', this.handleBack);
  }
  handleBack() {
  - return this.props.onPress;
  + return this.props.onPress();
  }
  render() {
  return null;
  