基本上我来自于react-navigation v4,我很熟悉使用SwitchNavigator作为网桥,但是v5不支持SwitchNavigator,所以有点难以理解下面的实现。
const Stack = createStackNavigator();
const Drawer = createDrawerNavigator();
function AuthenticationStack({ navigation }) {
return (
<Stack.Navigator initialRouteName="Home" screenOptions={{headerShown: false}}>
<Stack.Screen name="Home" component={Home} />
<Stack.Screen name="Login" component={Login} />
<Stack.Screen name="Registration" component={Registration} />
</Stack.Navigator>
);
}
function UserStack({ navigation }) {
return (
<Stack.Navigator initialRouteName="Jobs" screenOptions={{headerShown: false}}>
<Stack.Screen name="Jobs" component={Profile} />
<Stack.Screen name="JobDetails" component={JobDetails} />
</Stack.Navigator>
);
}
function App() {
return (
<NavigationContainer>
<Drawer.Navigator drawerContent={props => <SideBar { ...props } />}>
<Drawer.Screen name="Home" component={AuthenticationStack} />
<Drawer.Screen name="Jobs" component={UserStack} />
</Drawer.Navigator>
</NavigationContainer>
);
}
export default App;
上面的代码可以工作,但是有一些问题,
更新1
export default() => {
const [logged, setUser] = React.useState(false);
return (
<NavigationContainer>
{
logged
?
<DrawerScreen initialParams={{ setUser }} />
:
<AuthStackScreen initialParams={{ setUser }} />
}
</NavigationContainer>
);
}
现在,在login.js中,我需要将setUser更新为true,对吗?如果是,如何访问我的login.js文件中的setUser
更新2
class Login extends Component {
fetch(login_url, {
method: "POST",
headers: { 'Accept': 'application/json', 'Content-Type': 'application/json', 'Accept-Language': 'en-US' },
body: JSON.stringify(data)
})
.then((response) => {
const success = response.ok;
const data = response.json();
return Promise.all([success, data]);
})
.then(([success, response]) => {
var data, userInfo;
if (success) {
data = {
token: response.token,
user: response.user,
}
if(_storeUserData(response)) {
_retrieveUserData().then((userInfo) => {
this.setState({
logged: true,
userInfo: userInfo,
loading:false,
email: '',
password: ''
});
navigate('Profile');
})
.catch((error) => {
// alert(error);
});
}
}
this.setState(state_data);
})
.catch((error) => {
alert('Error:'+error);
this.setState({ loading: false});
});
}
答案 0 :(得分:2)
您可以通过有条件地渲染如下所示的导航器来创建类似于开关导航器的东西。
export default function App() {
const [loggedIn, setLoggedIn] = React.useState(false);
return (
<NavigationContainer>
{loggedIn ? (
<Drawer.Navigator initialRouteName="Home">
<Drawer.Screen name="Home" component={HomeScreen} initialParams={{ setLoggedIn }}/>
<Drawer.Screen name="Notifications" component={NotificationsScreen} />
</Drawer.Navigator>
) : (
<Stack.Navigator>
<Stack.Screen
name="Auth"
component={AuthScreen}
initialParams={{ setLoggedIn }}
/>
</Stack.Navigator>
)}
</NavigationContainer>
);
}
您可以尝试此小吃作为示例 https://snack.expo.io/@guruparan/switchsample