React native login, signup and navigation 风格一（react native navigation官网）

25-02-13 18

本文将介绍Reactnativelogin,signupandnavigation风格一的详细情况，特别是关于reactnativenavigation官网的相关信息。我们将通过案例分析、数据研究等多

本文将介绍React native login, signup and navigation 风格一的详细情况，特别是关于react native navigation官网的相关信息。我们将通过案例分析、数据研究等多种方式，帮助您更全面地了解这个主题，同时也将涉及一些关于@ react-navigation / native和@ react-navigation / stack读取整个堆栈、@react-navigation/native 和 @react-navigation/stack 应该是我模块的 peerDependencies 或依赖项吗？、javascript – undefined不是函数(评估’_reactNavigation.NavigationActions.reset’)、React Native 'TypeError: undefined is not an object (evaluating 'navigation.navigate')'的知识。

本文目录一览：

React native login, signup and navigation 风格一（react native navigation官网）
@ react-navigation / native和@ react-navigation / stack读取整个堆栈
@react-navigation/native 和 @react-navigation/stack 应该是我模块的 peerDependencies 或依赖项吗？
javascript – undefined不是函数(评估’_reactNavigation.NavigationActions.reset’)
React Native 'TypeError: undefined is not an object (evaluating 'navigation.navigate')'

React native login, signup and navigation 风格一（react native navigation官网）

点击打开链接 favicon.png

src/components/Form.js

import React,{ Component } from 'react';
import {
  StyleSheet,Text,View,TextInput,TouchableOpacity
} from 'react-native';

export default class Form extends Component<{}> {
  render() {
    return (
      <View style={styles.container}>
        <TextInput style={styles.inputBox}
        underlineColorAndroid='rgba(0,0)'
        placeholder='Email'
        placeholderTextColor='#ffffff'
        selectionColor="#fff"
        keyboardType="email-address"
        onSubmitEditing={()=> this.password.focus()}
        />
        <TextInput style={styles.inputBox}
        underlineColorAndroid='rgba(0,0)'
        placeholder='Password'
        secureTextEntry={true}
        placeholderTextColor='#ffffff'
        ref={(input) => this.password = input}
        />
       <TouchableOpacity style={styles.button}>
         <Text style={styles.buttonText}> {this.props.type}</Text>
       </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flexGrow: 1,alignItems: 'center',justifyContent: 'center'
  },inputBox: {
    width:300,backgroundColor:'rgba(255,255,0.2)',borderRadius:25,paddingHorizontal:16,fontSize:16,color:'#ffffff',marginVertical:10
  },button: {
        width:300,backgroundColor:'#1c313a',marginVertical:10,paddingVertical:12
    },buttonText: {
      fontSize:16,fontWeight:'500',color: '#ffffff',textAlign:'center'
    }
});

src/components/logo.js

import React,Image
} from 'react-native';

export default class logo extends Component<{}> {
  render() {
    return (
      <View style={styles.container}>
        <Image
          style={{width: 50,height: 50}}
          source={require('../assets/favicon.png')}
        />
        <Text style={styles.logoText}>Wecome to my app</Text>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,justifyContent: 'flex-end',alignItems: 'center'
  },logoText: {
    marginVertical:15,fontSize:18,color:'rgba(255,0.7)'
  }
});

src/pages/Login.js

import React,StatusBar,TouchableOpacity
} from 'react-native';

import logo from '../components/logo';
import Form from '../components/Form';
import {Actions} from 'react-native-router-flux';

export default class Login extends Component<{}> {
 signup(){
    Actions.signup();
 }

  render() {
    return (
      <View style={styles.container}>
        <logo/>
        <Form type="Login"/>
        <View style={styles.signupTextCont}>
           <Text style={styles.signupText}>Don't have an account yet?</Text>
           <TouchableOpacity onPress={this.signup}>
                <Text style={styles.signupButton}>Signup</Text>
           </TouchableOpacity>
        </View>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    backgroundColor: '#455a64',flex: 1,signupTextCont: {
      flexGrow: 1,alignItems: 'flex-end',justifyContent: 'center',paddingVertical:16,flexDirection:'row'
  },signupText: {
       color:'rgba(255,0.6)',fontSize:16
    },signupButton: {
        fontSize:16,fontWeight:'500'
    }
});

src/pages/Signup.js

import React,TouchableOpacity
} from 'react-native';

import logo from '../components/logo';
import Form from '../components/Form';
import {Actions} from 'react-native-router-flux';

export default class Signup extends Component<{}> {

  goBack() {
    Actions.pop();
  }

  render() {
    return (
      <View style={styles.container}>
        <logo/>
        <Form type="Signup"/>
        <View style={styles.signupTextCont}>
           <Text style={styles.signupText}>Already have an account </Text>
           <TouchableOpacity onPress={this.goBack}>
                <Text style={styles.signupButton}>Sign in</Text>
           </TouchableOpacity>
        </View>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    backgroundColor: '#455a64',fontWeight:'500'
    }
});

src/Routes.js

import React,{ Component } from 'react';
import {Router,Stack,Scene} from 'react-native-router-flux';

import Login from './pages/Login';
import Signup from './pages/Signup';

export default class Routes extends Component<{}> {
  render() {
    return (
      <Router>
        <Stack key="root" hideNavBar={true}>
          <Scene key="login" component={Login} title="Login" initial={true}/>
          <Scene key="signup" component={Signup} title="Register"/>
        </Stack>
      </Router>
    )
    }
}

App.js

import React,StatusBar
} from 'react-native';

import Routes from './src/Routes';

export default class App extends Component<{}> {
  render() {
    return (
      <View style={styles.container}>
         <StatusBar
           backgroundColor="#1c313a"
           bar/>
         <Routes/>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,}
});

需要安装路由组件

myths-Mac:zigoo myth$ cd $HOME/zigoo && npm i react-native-router-flux --save
> react-native-router-flux@4.0.0-beta.28 postinstall /Users/myth/zigoo/node_modules/react-native-router-flux> opencollective postinstall Thanks for installing react-native-router-flux Please consider donating to our open collective to help us maintain this package. Number of contributors: 214 Number of backers: 6 Annual budget: $460 Current balance: $460 Donate: https://opencollective.com/react-native-router-flux/donate+ react-native-router-flux@4.0.0-beta.28updated 1 package in 14.931smyths-Mac:zigoo myth$

@ react-navigation / native和@ react-navigation / stack读取整个堆栈

您可以使用如下所示的useNavigationState钩子来获取当前状态

https://reactnavigation.org/docs/use-navigation-state/

import {useNavigationState} from '@react-navigation/native';

const state = useNavigationState((state) => state);

alert(JSON.stringify(state.routes));

这将在路线中显示屏幕

@react-navigation/native 和 @react-navigation/stack 应该是我模块的 peerDependencies 或依赖项吗？

如何解决@react-navigation/native 和 @react-navigation/stack 应该是我模块的 peerDependencies 或依赖项吗？？

我正在编写一个使用以下依赖项的模块：

{
    "@react-native-community/masked-view": "^0.1.10","@react-navigation/native": "^5.9.4","@react-navigation/stack": "^5.14.4","@react-native-community/masked-view": "^0.1.10","env-cmd": "^10.1.0","firebase": "^8.4.1","react-native-gesture-handler": "^1.10.3","react-native-reanimated": "^2.1.0","react-native-safe-area-context": "^3.2.0","react-native-screens": "^3.1.1"
}

我知道存储单例状态的依赖项不应该在 dependencies 中，而应该在 devDependencies 和 peerDependencies 中。

我不认为 react-navigation 是一个单独的依赖项，我们可以创建导航的 ref。

可以在我的分布式模块 dependencies 中将这些依赖项用作 package.json 吗？

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）

javascript – undefined不是函数(评估’_reactNavigation.NavigationActions.reset’)

我想在特定超时后将启动画面导航到下一个屏幕.启动画面有一个动画,在Airbnb Lottie的帮助下为React Native完成.

splashscreen代码如下：

import React from "react";
import { Animated,Easing } from "react-native";
import LottieView from "lottie-react-native";
import { NavigationActions } from "react-navigation";

export default class SplashScreen extends React.Component {
  static navigationoptions = {
    header: null
  };

  constructor() {
    super();
    this.state = {
      progress: new Animated.Value(0),}
  }

  componentDidMount() {
    setTimeout(() => {
      this.navigatetoWalkthrough()
    },3500);
    
    Animated.timing(this.state.progress,{
      tovalue: 1,duration: 3000,easing: Easing.linear,}).start();
  }

  navigatetoWalkthrough = () => {
    const navigateAction = NavigationActions.reset({
      index: 0,actions: [NavigationActions.navigate({ routeName: "Walkthrough" })],});

    this.props.navigation.dispatch(navigateAction);
  }

  render() {
    return(
      <LottieView 
      source={require("../assets/splash/SplashScreenAnimation.json")}
      progress={this.state.progress}
      />
    );
  }
}

我运行应用程序后出现错误：

undefined is not a function (evaluating'_reactNavigation.NavigationActions.reset')

Main.js文件如下所示：

import React from "react";
import { View,Text } from "react-native";
import { createStackNavigator } from "react-navigation";

import SplashScreen from "./screens/SplashScreen";
import Walkthrough from "./screens/Walkthrough";

const Routes = createStackNavigator({
  Home: {
    screen: SplashScreen
  },Walkthrough: {
    screen: Walkthrough
  }
});

export default class Main extends React.Component {
  render() {
    return <Routes />;
  }
}

任何帮助/反馈？

解决方法

从NavigationActions中删除了重置操作,并且在反应导航的v2中有特定于StackNavigator的 StackActions.

StackActions is an object containing methods for generating actions
specific to stack-based navigators. Its methods expand upon the
actions available in NavigationActions.

The following actions are supported:

Reset – Replace current state with a new state

Replace – Replace a route at a given key with another route

Push – Add a route on the top of the stack,and navigate forward to it

Pop – Navigate back to prevIoUs routes

PopToTop – Navigate to the top route of the stack,dismissing all other routes

React Native 'TypeError: undefined is not an object (evaluating 'navigation.navigate')'

如何解决React Native ''TypeError: undefined is not an object (evaluating ''navigation.navigate'')''？

这是我的第一个 React Native 项目，我被卡住了，需要帮助。以下是我的代码。我想做的是跟随。

登陆屏幕将显示所有项目的列表和底部标签菜单。
一旦有人点击项目，就会打开项目详情页面。

App.Js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 *
 * @format
 * @flow strict-local
 */
import React from ''react'';
import App from ''./src'';
import { Provider as PaperProvider } from ''react-native-paper'';

export default App;

src/navigations/index.js

import * as React from ''react'';
import { Text,View,StyleSheet,FlatList,SafeAreaView } from ''react-native'';
import { List,Button,TextInput,FAB,Avatar,Card,Title,Paragraph } from ''react-native-paper'';
import { NavigationContainer } from ''@react-navigation/native'';
import { createBottomTabNavigator } from ''@react-navigation/bottom-tabs'';
import { createStackNavigator} from ''@react-navigation/stack'';
import ProjectList from ''_scenes/projects'';
import NewProject from ''_scenes/projects/addproject'';
import ProjectDetail from ''_scenes/projects/projectdetails'';
import Settings from ''_scenes/settings'';


const Tab = createBottomTabNavigator();


const Projects = ({ navigation }) => (
    <ProjectList navigation={navigation} />
);


function SettingsScreen( { navigation} ) {
  return (
    <Settings />
  );
}

export default function App() {
  return (
    <NavigationContainer>
      <Tab.Navigator initialRouteName="HomeScreen">
        <Tab.Screen name="Home" component={Projects} options={{ tabBarBadge: 3 }}/>
        <Tab.Screen name="Settings" component={SettingsScreen} options={{ tabBarBadge: 2 }}/>
      </Tab.Navigator>
    </NavigationContainer>
  );
}

src/scenes/projects/index.js

import React,{ useEffect,useState } from ''react'';
import { ActivityIndicator,Text,View } from ''react-native'';
import { Item,List,Button } from ''react-native-paper'';
import { NavigationContainer } from ''@react-navigation/native'';
import { createBottomTabNavigator } from ''@react-navigation/bottom-tabs'';
import { createStackNavigator} from ''@react-navigation/stack'';
import NewProject from ''_scenes/projects/addproject'';
import ProjectDetail from ''./projectdetails'';

ProjectList = ({ navisation }) => {

  const [isLoading,setLoading] = useState(true);
  const [data,setData] = useState([]);

  useEffect(() => {
    fetch(''http://xxx.xxx.xxx.xxx/projects'')
      .then((response) => response.json())
      .then((json) => setData(json))
      .catch((error) => console.error(error))
      .finally(() => setLoading(false));
  },[]);

  function Projects ( {navigation }) {
    return (
      <View style={{ flex: 1,padding: 24 }}>
        <FlatList
        data={data} 
        keyExtractor={({ id },index) => id}
        renderItem={renderProject}
        />
      </View>
    )
    }

  const renderProject = ({ navigation,item }) => (
    <List.Item
    title={item.title}
    description={item.description}
    onPress={() => navigation.navigate(''ProjectDetails'')}
    />
  );

  const AddProject = ({ navigation }) => (
      <NewProject />
  );

  function ProjectDetails({navigation}) {
    return (
      <ProjectDetail />
    );
  }

  function Chat({navigation}) {
    return (
      <View>
        <Text>Chat</Text>
      </View>
    );
  }



  const Stack = createStackNavigator();
  return (
    <Stack.Navigator>
      <Stack.Screen title="Home" name="Home" component={Projects} options={{headerShown: false}}/>
      <Stack.Screen title="Add Project" name="AddProject" component={AddProject} />
      <Stack.Screen title="Project Details" name="ProjectDetails" component={ProjectDetails} />
      <Stack.Screen title="Chat" name="Chat" component={Chat} />      
    </Stack.Navigator>

    );
};

export default ProjectList;