问如何在Android (react-native)上禁用设备后退按钮？

EN

componentDidMount() {
  BackHandler.addEventListener('hardwareBackPress', this.onBackPress);
}

componentWillUnmount() {
  BackHandler.removeEventListener('hardwareBackPress', this.onBackPress);
}

onBackPress = () => {
  if (this.props.currentScreen.name === 'app.main') {
     Alert.alert(
       'Confirm exit',
       'Do you want to exit App?',
       [
         {text: 'CANCEL', style: 'cancel'},
         {text: 'OK', onPress: () => {
           BackHandler.exitApp()
          }
        }
       ]
    );
  } else {
    Navigation.pop(this.props.currentScreen.id);
  }

  return true;
}

//register to compomentDidApperaListener to keep track on which screen is currently open. The componentName and Id are stored in my redux store
Navigation.events().registerComponentDidAppearListener(({ componentId, componentName }) => {
  store.dispatch(updateCurrentScreen({'name': componentName, 'id': componentId}))
})

BackHandler.addEventListener('hardwareBackPress', function() {
  return false;
});

@Override
public void onBackPressed() {
  // super.onBackPressed(); comment this line to disable back button  press
}