React native 如何确定抽屉中的活动路径Vigator为活动菜单项着色并关闭抽屉
我正在使用反应导航库。我已经编写了一个自定义抽屉菜单,并将其添加到导航器的contentComponent配置中。我不知道如何从自定义菜单中确定哪个页面/屏幕处于活动状态。这是我的抽屉驱动程序代码:React native 如何确定抽屉中的活动路径Vigator为活动菜单项着色并关闭抽屉,react-native,react-navigation,react-navigation-drawer,React Native,React Navigation,React Navigation Drawer,我正在使用反应导航库。我已经编写了一个自定义抽屉菜单,并将其添加到导航器的contentComponent配置中。我不知道如何从自定义菜单中确定哪个页面/屏幕处于活动状态。这是我的抽屉驱动程序代码: const DrawerNavigator = createDrawerNavigator({ "Search Locations": { screen: SearchLocationsScreen, }, "About": { screen:
const DrawerNavigator = createDrawerNavigator({
"Search Locations": {
screen: SearchLocationsScreen,
},
"About": {
screen: AboutScreen
},
"Favorites": {
screen: FavoritesScreen
},
"Sign In": {
screen: SignIn
},
}, {
contentComponent: props => <CustomDrawerComponent {...props} />
});
我的自定义抽屉菜单如下所示:
export default (navigation) => {
const {state} = navigation;
let navOptions = {};
if(state.index === 0){
navOptions.headerRight = (
<TouchableOpacity>
<MaterialIcons
name="my-location"
size={32}
color="#fff"
style={{paddingRight: 10}} />
</TouchableOpacity>
)
}
if (state.isDrawerOpen){
navOptions.headerLeft = (
<>
<StatusBar barStyle='light-content'/>
<TouchableOpacity onPress={() => {
navigation.dispatch(DrawerActions.toggleDrawer())
}}>
<Ionicons name="ios-close" style={styles.menuClose} size={38} color={'#fff'}/>
</TouchableOpacity>
</>
)
} else {
navOptions.headerLeft = (
<>
<StatusBar barStyle='light-content'/>
<TouchableOpacity onPress={() => {
navigation.dispatch(DrawerActions.toggleDrawer())
}}>
<Ionicons name="ios-menu" style={styles.menuOpen} size={32} color={'#fff'}/>
</TouchableOpacity>
</>
)
}
return navOptions;
};
const MainStackNavigator = createStackNavigator({
DrawerNavigator: {
screen: DrawerNavigator,
navigationOptions: ({navigation}) => configureDrawerOptions(navigation)
}
}, {
defaultNavigationOptions: configureDefaultStackNavOptions
});
const DrawerMenu = (props) => {
// let routes = props.navigation.state.routes;
const navigateToScreen = (route) => () => {
const navAction = NavigationActions.navigate({
routeName: route
});
props.navigation.dispatch(navAction);
};
return (
<ScrollView style={styles.root}>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Search Locations')}>
<View style={styles.row}>
<MaterialIcons name='location-searching' style={styles.icon} size={30}/>
<Text style={styles.label}>Search Locations</Text>
</View>
</TouchableOpacity>
</View>
<View {...props} style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('About')}>
<View style={styles.row}>
<MaterialIcons name='info-outline' style={styles.icon} size={30}/>
<Text style={styles.label}>About</Text>
</View>
</TouchableOpacity>
</View>
<View {...props} style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Favorites')}>
<View style={styles.row}>
<MaterialIcons name='favorite-border' style={styles.icon} size={30}/>
<Text style={styles.label}>Favorites</Text>
</View>
</TouchableOpacity>
</View>
<View {...props} style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Sign In')}>
<View style={styles.row}>
<Ionicons name='md-log-in' style={styles.icon} size={30}/>
<Text style={styles.label}>Sign In</Text>
</View>
</TouchableOpacity>
</View>
</ScrollView>
)
};
const-DrawerMenu=(道具)=>{
//let routes=props.navigation.state.routes;
const navigateToScreen=(路由)=>()=>{
const navAction=NavigationActions.navigate({
路由名称:路由
});
道具.导航.调度(导航行动);
};
返回(
搜索位置
关于
最爱
登录
)
};
如果选择不同的页面,我可以很好地导航(如果我在“搜索位置”页面,并且我想进入“登录”页面,一切正常)。但是,如果我在“搜索位置”页面上,单击“搜索位置”菜单项,我只想关闭抽屉。我还想给活动页面的图标/标签着色。我的问题是,在DrawerMenu.js文件中,我不知道如何确定我当前在哪个页面上执行此操作
我是否正确地实现了这一点?我是个新来的本地人。提前谢谢。我想出了一个方法,但我想知道是否有比我想出的更好/更简单的方法。我添加了一些钩子(useffect、useState)并修改了navigateToScreen函数。这是我的密码。如果这对你有帮助,请投票表决。如果您提供了比我更好的解决方案,我会将其作为公认的答案:
const DrawerMenu = (props) => {
let activeIndex = props.navigation.state.index;
let activeRouteName = props.navigation.state.routes[activeIndex].routeName;
const [activeRoute, setActiveRoute] = useState('');
useEffect(() => {
setActiveRoute(activeRouteName);
}, [activeRouteName, activeRoute]);
const navigateToScreen = (route) => () => {
if (activeRouteName === route){
return props.navigation.closeDrawer();
}
const navAction = NavigationActions.navigate({
routeName: route
});
props.navigation.dispatch(navAction);
};
return (
<ScrollView style={styles.root}>
<View style={styles.rowContainer}>
<TouchableOpacity
onPress={navigateToScreen('Search Locations')}>
<View style={styles.row}>
<MaterialIcons
name='location-searching'
style={activeRouteName === "Search Locations" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "Search Locations" ? styles.activeLabel : styles.label}>
Search Locations
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('About')}>
<View style={styles.row}>
<MaterialIcons
name='info-outline'
style={activeRouteName === "About" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "About" ? styles.activeLabel : styles.label}>
About
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Favorites')}>
<View style={styles.row}>
<MaterialIcons
name='favorite-border'
style={activeRouteName === "Favorites" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "Favorites" ? styles.activeLabel : styles.label}>
Favorites
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Profile')}>
<View style={styles.row}>
<MaterialIcons
name='person-outline'
style={activeRouteName === "Profile" ? styles.activeIcon : styles.icon}
size={32}
/>
<Text style={activeRouteName === "Profile" ? styles.activeLabel : styles.label}>
User Profile
</Text>
</View>
</TouchableOpacity>
</View>
</ScrollView>
)
};
const styles = StyleSheet.create({
root: {
marginTop: 20,
},
row: {
flexDirection: 'row',
paddingTop: 16,
paddingBottom: 16,
alignItems: 'center',
justifyContent: 'flex-start'
},
icon: {
marginRight: 25,
color: '#fff',
padding: 2,
},
activeIcon: {
marginRight: 25,
color: colors.accent,
padding: 2,
},
label: {
fontSize: 20,
color: '#fff',
},
activeLabel: {
fontSize: 20,
color: colors.accent,
},
rowContainer: {
marginHorizontal: 16,
}
});
export default DrawerMenu;
const-DrawerMenu=(道具)=>{
让activeIndex=props.navigation.state.index;
让activeRouteName=props.navigation.state.routes[activeIndex].routeName;
const[activeRoute,setActiveRoute]=useState(“”);
useffect(()=>{
setActiveRoute(activeRouteName);
},[activeRouteName,activeRoute]);
const navigateToScreen=(路由)=>()=>{
如果(activeRouteName==路由){
返回props.navigation.closeDrawer();
}
const navAction=NavigationActions.navigate({
路由名称:路由
});
道具.导航.调度(导航行动);
};
返回(
搜索位置
关于
最爱
用户配置文件
)
};
const styles=StyleSheet.create({
根目录:{
玛金托普:20,
},
行:{
flexDirection:'行',
paddingTop:16,
填充底部:16,
对齐项目:“居中”,
justifyContent:“灵活启动”
},
图标:{
marginRight:25,
颜色:“#fff”,
填充:2,
},
活动图标:{
marginRight:25,
颜色:颜色。重音,
填充:2,
},
标签:{
尺寸:20,
颜色:“#fff”,
},
活动标签:{
尺寸:20,
颜色:颜色。重音,
},
行容器:{
marginHorizontal:16,
}
});
导出默认抽屉菜单;
我想出了一个方法,但我想知道是否有比我想出的更好/更简单的方法。我添加了一些钩子(useffect、useState)并修改了navigateToScreen函数。这是我的密码。如果这对你有帮助,请投票表决。如果您提供了比我更好的解决方案,我会将其作为公认的答案:
const DrawerMenu = (props) => {
let activeIndex = props.navigation.state.index;
let activeRouteName = props.navigation.state.routes[activeIndex].routeName;
const [activeRoute, setActiveRoute] = useState('');
useEffect(() => {
setActiveRoute(activeRouteName);
}, [activeRouteName, activeRoute]);
const navigateToScreen = (route) => () => {
if (activeRouteName === route){
return props.navigation.closeDrawer();
}
const navAction = NavigationActions.navigate({
routeName: route
});
props.navigation.dispatch(navAction);
};
return (
<ScrollView style={styles.root}>
<View style={styles.rowContainer}>
<TouchableOpacity
onPress={navigateToScreen('Search Locations')}>
<View style={styles.row}>
<MaterialIcons
name='location-searching'
style={activeRouteName === "Search Locations" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "Search Locations" ? styles.activeLabel : styles.label}>
Search Locations
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('About')}>
<View style={styles.row}>
<MaterialIcons
name='info-outline'
style={activeRouteName === "About" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "About" ? styles.activeLabel : styles.label}>
About
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Favorites')}>
<View style={styles.row}>
<MaterialIcons
name='favorite-border'
style={activeRouteName === "Favorites" ? styles.activeIcon : styles.icon}
size={30}
/>
<Text style={activeRouteName === "Favorites" ? styles.activeLabel : styles.label}>
Favorites
</Text>
</View>
</TouchableOpacity>
</View>
<View style={styles.rowContainer}>
<TouchableOpacity onPress={navigateToScreen('Profile')}>
<View style={styles.row}>
<MaterialIcons
name='person-outline'
style={activeRouteName === "Profile" ? styles.activeIcon : styles.icon}
size={32}
/>
<Text style={activeRouteName === "Profile" ? styles.activeLabel : styles.label}>
User Profile
</Text>
</View>
</TouchableOpacity>
</View>
</ScrollView>
)
};
const styles = StyleSheet.create({
root: {
marginTop: 20,
},
row: {
flexDirection: 'row',
paddingTop: 16,
paddingBottom: 16,
alignItems: 'center',
justifyContent: 'flex-start'
},
icon: {
marginRight: 25,
color: '#fff',
padding: 2,
},
activeIcon: {
marginRight: 25,
color: colors.accent,
padding: 2,
},
label: {
fontSize: 20,
color: '#fff',
},
activeLabel: {
fontSize: 20,
color: colors.accent,
},
rowContainer: {
marginHorizontal: 16,
}
});
export default DrawerMenu;
const-DrawerMenu=(道具)=>{
让activeIndex=props.navigation.state.index;
让activeRouteName=props.navigation.state.routes[activeIndex].routeName;
const[activeRoute,setActiveRoute]=useState(“”);
useffect(()=>{
setActiveRoute(activeRouteName);
},[activeRouteName,activeRoute]);
const navigateToScreen=(路由)=>()=>{
如果(activeRouteName==路由){
返回props.navigation.closeDrawer();
}
const navAction=NavigationActions.navigate({
路由名称:路由
});
道具.导航.调度(导航行动);
};
返回(
搜索位置
关于