React Native-标识活动屏幕。抽屉导航器

你能做的是

在您的上下文中，只有一个可以激活的屏幕，即约会屏幕。如果您想知道约会屏幕是否聚焦，则应检查DrawerContainer组件内的道具。它会给你activeItemKeyie任命。

然后，你可以简单地检查DrawerComponent，如果

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

您也可以通过activeTintColor从DrawerNavigator道具如下所示，你可以找到其他DrawerNavigatorConfigs在这里

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

export default DrawerStack;

我在抽屉式导航器中使用堆栈导航器。我想做的是，我需要知道activeItem（活动屏幕），以便将其显示为活动状态。

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'
});

抽屉导航器

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

});

export default DrawerStack;