reactjs - React Native - 识别事件屏幕。抽屉导航器

Question

我在抽屉导航器中使用堆栈导航器。我想要做的是，我需要知道 activeItem(事件屏幕)，以便将其显示为事件状态。

StackNavigator

const stackNav = StackNavigator({
  homeComponent: { screen: HomeScreen },
  serviceScreen: { screen: ServiceScreen },
  serviceDetailScreen: { screen: ServiceDetailScreen },
  selectVehicleScreen: { screen: SelectVehileScreen },
  addEditVehicle: { screen: AddVehicle },
  dateTimeScreen: { screen: DateTimeScreen },
  reviewScreen: { screen: ReviewScreen },
  notesScreen: { screen: NotesScreen },
}, {
  headerMode: 'none'
}); 

DrawerNavigator

const DrawerStack = DrawerNavigator({
  appointment: {
    screen: stackNav,
  },
}, {
  headerMode: 'none',
  gesturesEnabled: false,
  contentComponent: DrawerContainer

});

export default DrawerStack;

Answer 1

你能做的是

在您的上下文中，只有一个屏幕可以激活，那就是约会屏幕。如果你想知道约会屏幕是否聚焦，那么你应该检查 DrawerContainer 组件内的 Prop 。它将为您提供 activeItemKey 即约会。

然后你可以简单地检查 DrawerComponent 如果

this.props.activeItemKey === 'appointment' ? { color: '#000' } : { color: '#fff' }]}

您还可以从 DrawerNavigator 传递 activeTintColor 属性，如下所示您可以找到其他 DrawerNavigatorConfigs here

const DrawerStack = DrawerNavigator({
  appointment: {
    screen: stackNav,
  },
}, {
  headerMode: 'none',
  gesturesEnabled: false,
  contentComponent: DrawerContainer,
  contentOptions: {
    activeTintColor: '#e91e63',
    itemsContainerStyle: {
        marginVertical: 0,
    },
    iconContainerStyle: {
        opacity: 1
    }
  }
});

export default DrawerStack;