如果使用 react-native-vector-icons，则为 react-navigation drawer active icon 着色

Question

我有这个反应导航抽屉：

我想像标签一样将活动图标涂成绿色。

我正在使用 react-native-vector-icons 作为图标。

代码：

const AddMenuIcon = ({ navigate }) => (
  <View>
    <Icon
      name="plus"
      size={30}
      color="#FFF"
      onPress={() => navigate('DrawerOpen')}
    />
  </View>
)

const SearchMenuIcon = ({ navigate }) => (
  <Icon
    name="search"
    size={30}
    color="#FFF"
    onPress={() => navigate('DrawerOpen')}
  />
)

const LoginMenuIcon = ({ navigate }) => (
  <Icon
    name="user"
    size={30}
    style={{ fontWeight: '900' }}
    color="#FFF"
    onPress={() => navigate('DrawerOpen')}
  />
)

const Stack = {
  Login: {
    screen: Login,
    headerMode: 'none'
  },
  Search: {
    screen: Search,
    headerMode: 'none'
  },
  Add: {
    screen: Add,
    headerMode: 'none'
  }
}

const DrawerRoutes = {
  Login: {
    name: 'Login',
    screen: StackNavigator(Stack.Login, {
      headerMode: 'none'
    }),
    headerMode: 'none',
    navigationOptions: ({ navigation }) => ({
      drawerIcon: LoginMenuIcon(navigation)
    })
  },
  'Search Vegan': {
    name: 'Search',
    screen: StackNavigator(Stack.Search, {
      headerMode: 'none'
    }),
    headerMode: 'none',
    navigationOptions: ({ navigation }) => ({
      drawerIcon: SearchMenuIcon(navigation)
    })
  },
  'Add vegan': {
    name: 'Add',
    screen: StackNavigator(Stack.Add, {
      headerMode: 'none'
    }),
    headerMode: 'none',
    navigationOptions: ({ navigation }) => ({
      drawerIcon: AddMenuIcon(navigation)
    })
  }
}

const CustomDrawerContentComponent = props => (
  <SafeAreaView style={{ flex: 1, backgroundColor: '#3f3f3f', color: 'white' }}>
    <DrawerItems {...props} />
  </SafeAreaView>
)

const RootNavigator = StackNavigator(
  {
    Drawer: {
      name: 'Drawer',
      screen: DrawerNavigator(DrawerRoutes, {
        initialRouteName: 'Login',
        drawerPosition: 'left',
        contentComponent: CustomDrawerContentComponent,
        contentOptions: {
          activeTintColor: '#27a562',
          inactiveTintColor: 'white',
          activeBackgroundColor: '#3a3a3a',
        }
      }),
      headerMode: 'none',
      initialRouteName: 'Login'
    },
    initialRouteName: 'Login'
  },
  {
    headerMode: 'none',
    initialRouteName: 'Drawer'
  }
)

export default RootNavigator

如果使用 react-native-vector-icons，有没有办法将活动图标的颜色与活动文本相同？activeTintColor对图标不起作用。我们可以以编程方式检查是否处于活动状态吗？另一个奇怪的事情是 rgba 颜色不起作用，CustomDrawerContentComponent所以我不能使背景半透明，这很烦人。如果你也能在那里提供帮助，那就加分吧！

Answer 1

您可以动态地将tintColor道具传递给您的图标组件，该组件会自动解析为活动或非活动的色调颜色：

drawerIcon: ({tintColor}) => <MaterialIcons name="home" size={20} color={tintColor} />,

此外，默认情况下，非活动图标容器似乎带有一些透明度，因此您可能希望将 设置opacity为 1：

<DrawerItems iconContainerStyle={{opacity: 1}} ... />

Answer 2

在反应导航版本：5.x

使用颜色而不是 tintColor 提供自定义抽屉内容

    <Drawer.Screen name="settingscreen" component={Settings}
            options={{
                drawerLabel: "Settings",
                drawerIcon: ({ color }) => <MaterialCommunityIcons name="settings" size={24} style={[styles.icon, { color: color }]} />
            }}
        />