Я работал над старым приложением, используя React Navigation версии 4, приложение, очевидно, содержит регистрацию и страницу входа в систему, а затем содержимое приложения.
недавно я начал переделывать содержимое приложения, используя React Navigation версии 5, чтобы использовать анимацию общих элементов и нижний навигатор вкладок, и это было довольно просто.
, но мне было трудно преобразовать часть входа в систему в версию 5, поскольку структура приложения несколько сложна, и я новичок в реагировании на навигационную версию 5.
Я оставлю рисунок структуры приложения. ниже длинный с образцами используемого кода.
Приложение. js:
import { setNavigator } from "./app/navigationRef";
const articleListFlow = createStackNavigator({
Main: MainScreen, // screen with diffrent articles categories
ResultsShow: ResultShowScreen, // article details screen
});
const loginFlow = createStackNavigator({
Signup: SignupScreen,
Signin: SigninScreen,
});
loginFlow.navigationOptions = () => {
return {
headerShown: false,
};
};
articleListFlow.navigationOptions = {
title: "News Feed",
tabBarIcon: ({ tintColor }) => (
<View>
<Icon style={[{ color: tintColor }]} size={25} name={"ios-cart"} />
</View>
),
activeColor: "#ffffff",
inactiveColor: "#ebaabd",
barStyle: { backgroundColor: "#d13560" },
};
const switchNavigator = createSwitchNavigator({
ResolveAuth: ResolveAuthScreen,
MainloginFlow: createSwitchNavigator({
//WelcomeScreen: WeclomeScreen,
loginFlow: loginFlow,
}),
mainFlow: createMaterialBottomTabNavigator(
{
articleListFlow: articleListFlow,
ArticleSave: ArticleSaveScreen, // we dont need this one
Account: AccountScreen,
},
{
activeColor: "#ffffff",
inactiveColor: "#bda1f7",
barStyle: { backgroundColor: "#6948f4" },
}
),
});
const App = createAppContainer(switchNavigator);
export default () => {
return (
<AuthProvider>
<App
ref={(navigator) => {
setNavigator(navigator);
}}
/>
</AuthProvider>
);
};
NavigationRef. js:
import { NavigationActions } from "react-navigation";
let navigator;
export const setNavigator = (nav) => {
navigator = nav;
};
export const navigate = (routeName, params) => {
navigator.dispatch(
NavigationActions.navigate({
routeName,
params,
})
);
};
// routename is the name of the routes singin singup accountscreen
// params information we want to pass to the screen we want to show
AuthContext. js
import { AsyncStorage } from "react-native";
import createDataContext from "./createDataContext";
import userAPI from "../api/user";
// using navigate to access the navigator and redirect the user
import { navigate } from "../navigationRef";
// AUTHENTICATION REDUCERS
const authReducer = (state, action) => {
switch (action.type) {
case "add_error": {
return {
...state,
errorMessage: action.payload,
};
}
case "clear_error_message": {
return {
...state,
errorMessage: "",
};
}
case "signin": {
return {
errorMessage: "",
token: action.payload,
};
}
default:
return state;
}
};
// CLEARING ERROR MESSAGES WHEN SWITCHING SIGNIN-SIGNUP
const clearErrorMessage = (dispatch) => () => {
dispatch({ type: "clear_error_message" });
};
// AUTOMATIC SIGNIN ONLY USING TOKENS ON USER DEVICE
const tryLocalSignin = (dispatch) => async () => {
const token = await AsyncStorage.getItem("token");
if (token) {
// if token exists
dispatch({ type: "signin", payload: token });
navigate("Main");
} else {
// if token doesnt exist
navigate("WelcomeScreen");
}
};
// SIGNUP
const signup = (dispatch) => async ({ email, password }) => {
try {
const response = await userAPI.post("/signup", { email, password });
await AsyncStorage.setItem("token", response.data.token);
dispatch({ type: "signin", payload: response.data.token });
// making use of the navigate component to access navigation
// and redirect the user
navigate("Main");
} catch (err) {
dispatch({
type: "add_error",
payload: "Something went wrong with sign up",
});
}
};
// SIGNIN
const signin = (dispatch) => async ({ email, password }) => {
try {
const response = await userAPI.post("/signin", { email, password });
await AsyncStorage.setItem("token", response.data.token);
// using signin since the logic is the same
dispatch({ type: "signin", payload: response.data.token });
// making use of the navigate component to access navigation
// and redirect the user
navigate("Main");
} catch (err) {
console.log(err);
dispatch({
type: "add_error",
payload: "Something went wrong with sign in",
});
}
};
// SIGNOUT
const signout = (dispatch) => async () => {
// removing the token makes identification not work again
await AsyncStorage.removeItem("token");
dispatch({ type: "signout" });
navigate("loginFlow");
};
// CREATING CONTEXT AND PROVIDER OBJECTS FOR AUTHENTICATION
export const { Provider, Context } = createDataContext(
authReducer,
{
signin,
signup,
signout,
clearErrorMessage,
tryLocalSignin,
},
{
token: null,
errorMessage: "",
}
);
createDataContext. js
import React, { useReducer } from "react";
export default (reducer, actions, defaultValue) => {
const Context = React.createContext();
const Provider = ({ children }) => {
const [state, dispatch] = useReducer(reducer, defaultValue);
const boundActions = {};
for (let action in actions) {
// for every action in the actions, call it with dispatch
boundActions[action] = actions[action](dispatch);
}
return (
<Context.Provider value={{ state, ...boundActions }}>
{children}
</Context.Provider>
);
};
return { Context, Provider };
};
Приношу свои извинения за длинный код и заранее благодарю вас для всех, кто может помочь.