React Native中的DrawerNavigator多级菜单

Question

我是React Native的新手，我想在抽屉式导航器中创建子项，但在尝试搜索相同项时却无济于事...如果有解决方案，请让我知道...我在这里共享我的代码：

const AppDrawerNavigator = DrawerNavigator({
  ServiceCategories: {
    screen: ServiceCategories,
    navigationOptions: {
      drawerLabel: 'Home',
      drawerIcon: () => (
        <Icon name="bars" size={18} color="#333" />
        )
    },
  },
  Profile: {
    screen: AppDrawerNavigator2,
    navigationOptions: {
      drawerLabel: 'My Profile',
      drawerIcon: () => (
        // {{ fontWeight:'bold',fontSize:20 }}
        <Icon name="user" size={18} color="#333" />
        )
    },
  },
{

  contentOptions: {
    activeTintColor: '#fff',
    inactiveTintColor: '#fff',
    activeBackgroundColor: '#ffb6cf',
    top:50,
    itemStyle: {
      fontSize: 18,
    },
  },
  contentComponent: (props) => (
    <View>
      <ScrollView>
      <DrawerUserDetail  navigation={props.navigation} />
        <DrawerItems
          {...props}
          getLabel = {(scene) => (
            <View style={{borderBottomWidth:0.5,borderBottomColor: "grey",width:width/1.9}}>
              <Text style={{color:'#333',fontSize:16,paddingBottom:10,paddingTop:10}}>{props.getLabel(scene)}</Text>
            </View>
          )}
        />
        </ScrollView>
      </View>
    )
});

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