Problem when run onpress fonction : react navigation - react-native

I would just like to be redirected to my "Profile" page when I click on the "Enter" button. I don't know if this is the correct method but my homepage is App.js and it contains my button and my image. Sorry for the mistakes I am a beginner and moreover French!
app.js
import 'react-native-gesture-handler';
import React from 'react';
import DisplayAnImage from './Components/DisplayAnImage';
import Profile from './Components/Profile';
import { Enter } from './Components/Enter';
import { StyleSheet, Text, ScrollView } from 'react-native';
import { NavigationContainer } from '#react-navigation/native';
import { createStackNavigator } from '#react-navigation/stack';
export default class App extends React.Component {
render() {
return (
<ScrollView style={{ flex: 1 }}>
<DisplayAnImage/>
<Enter/>
</ScrollView>
)
}
}
enter.js
import React from 'react';
import { Platform, StyleSheet, Text, View, Image, Button, Alert, SafeAreaView } from 'react-native';
import Profile from './Profile.js';
import { createStackNavigator } from '#react-navigation/stack';
import { StackNavigator } from 'react-navigation';
export const Enter = ({ navigation }) => {
return (
<SafeAreaView style={styles.Button}>
<View>
<Button
title="Entrer"
color="#FFFFFF"
onPress={() => this.props.navigation.navigate('Profile')}
/>
</View>
</SafeAreaView>
);
}
const styles = StyleSheet.create({
Button: {
flex: 1,
marginHorizontal: 120,
borderRadius: 20,
backgroundColor: '#1067b3'
},
title: {
textAlign: 'center',
marginVertical: 8,
},
fixToText: {
flexDirection: 'row',
justifyContent: 'space-between',
},
separator: {
marginVertical: 8,
borderBottomColor: '#737373',
borderBottomWidth: StyleSheet.hairlineWidth,
},
});
profile.js
import React, {Component} from 'react';
import { View, Text } from 'react-native';
export default class Profile extends React.Component {
render() {
return (
<View>
<Text>Profile</Text>
</View>
);
}
}
Thank you very much for your help

You are calling "this" from your functional component. Please change this
onPress={() => this.props.navigation.navigate('Profile')}
to
onPress={() => navigation.navigate('Profile')}

Related

I can't change the screen

I've got a component(Bottom.js) inside of another component(LoginScreen.js), inside this component(Bottom.js) there is a button(TouchableOpacity), I want to press it and change the LoginScreen to RegisterScreen, but I can't! I tried to see the docs of react navigation and I still confused. Could someone help me?
App.js
import { NavigationContainer } from '#react-navigation/native';
import { createStackNavigator } from '#react-navigation/stack';
//import { StatusBar } from 'expo-status-bar';
import React from 'react';
import { StyleSheet } from 'react-native';
import LoginScreen from './src/screens/Login/LoginScreen';
import RegisterScreen from './src/screens/Register/RegisterScreen';
import mock from './src/mocks/Login'
const Stack = createStackNavigator();
const MyTheme = {
dark: false,
colors: {
background: 'rgb(7, 19, 24)',
},
};
export default function App(){
return (
<NavigationContainer theme={MyTheme}>
<Stack.Navigator screenOptions={{headerShown: false}}>
<Stack.Screen name='Login' >
{() => <LoginScreen {...mock}/>}
</Stack.Screen>
<Stack.Screen name='Register' >
{() => <RegisterScreen />}
</Stack.Screen>
</Stack.Navigator>
</NavigationContainer>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#071318',
},
});
LoginScreen.js
import { StatusBar } from 'expo-status-bar';
import React from 'react';
import { View, Text, StyleSheet } from 'react-native';
import {Button, Input, Image} from 'react-native-elements'
import Top from './components/Top'
import Form from './components/Form'
import ButtonEnter from './components/ButtonEnter'
import Bottom from './components/Bottom'
export default function LoginScreen({top, form, buttonEnter, bottom, navigation})
{
return <>
<View style={styles.background}>
<StatusBar style='light'/>
<Top {...top}/>
<Form {...form}/>
<ButtonEnter {...buttonEnter}/>
<Bottom {...bottom} {...navigation}/>
</View>
</>
}
const styles = StyleSheet.create({
background:{
backgroundColor: "#071318"
},
text:{
color:'#AAA',
fontSize: 16,
},
logo:{
width: 160,
height: 160,
marginHorizontal: '25%',
marginTop: '15%'
}
})
Bottom.js
import React from 'react';
import { StyleSheet,View, Text, TouchableOpacity} from 'react-native';
export default function Bottom({signupButtonText, navigation})
{
return <>
<View style={styles.view}>
<TouchableOpacity style={styles.button} onPress={() => navigation.navigate('Register')}>
<Text style={styles.helpButton}>{signupButtonText}</Text>
</TouchableOpacity>
</View>
</>
}
const styles = StyleSheet.create({
view:{
flexDirection:'row',
width: '70%',
height:'40%',
marginHorizontal:'15%',
justifyContent:'center',
},
button:{
marginTop: 16,
backgroundColor: '#0B2027',
paddingVertical: 12,
borderRadius:20,
width: 80,
alignItems: 'center',
position: 'absolute',
bottom: 30
},
image:{
width:'30%',
marginHorizontal:'35%'
},
helpButton:{
color:'white',
justifyContent:'space-around'
}
})
Register.js
import React from 'react'
import { View, Text } from 'react-native'
const RegisterScreen = ({navigation}) => {
return (
<View>
<Text>register</Text>
</View>
)
}
export default RegisterScreen
Bottom component is expecting to receive Navigation, not its properties, so try this:
<Bottom navigation={navigation} {...bottom}/>

Unable to get tab bar from react-navigation working

I want to show tab bar in my react-native app using react-navigation library. I've tried code from an example provided in the documentation. However, when I run the code on iOS simulator the screen appears to be blank, tab bar doesn't load.
Here's my code so far,
TabNavigator.js
import React from 'react';
import { Text, View } from 'react-native';
import { createBottomTabNavigator, createAppContainer } from 'react-navigation';
class HomeScreen extends React.Component {
render() {
return (
<View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
<Text>Home!</Text>
</View>
);
}
}
class SettingsScreen extends React.Component {
render() {
return (
<View style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}>
<Text>Settings!</Text>
</View>
);
}
}
const TabNavigator = createBottomTabNavigator(
{
Home: HomeScreen,
Settings: SettingsScreen,
},
{
initialRouteName: "Home"
}
);
export default createAppContainer(TabNavigator);
App.js
import React, { Component } from 'react';
import { View, Text, StyleSheet } from 'react-native';
import { createBottomTabNavigator } from 'react-navigation';
import TabNavigator from './components/TabNavigator';
const App = () => {
return (
<View>
<TabNavigator />
</View>
);
};
export default App;
Looking at the App.js code, you forgot to put flex:1 to the view, it's one of the common mistakes that react-navigation tells about in his documentation.
const App = () => {
return (
<View style={ { flex:1} }>
<TabNavigator />
</View>
);
};
Source: https://reactnavigation.org/docs/en/common-mistakes.html#wrapping-appcontainer-in-a-view-without-flex

How to correctly import 'NavigatorIOS'

I'm getting an error when trying to load my React-Native App. It seems to be related to NavigatorIOS being undefined. When I try to use a text component, that works fine, so is the problem specific to how I'm using NavigatorIOS?
/**
* Sample React Native App
* https://github.com/facebook/react-native
*
* #format
* #flow
*/
import React, {Fragment, Component} from 'react';
import {
SafeAreaView,
StyleSheet,
ScrollView,
View,
NavigatorIOS,
Text,
StatusBar,
} from 'react-native';
import {
Header,
LearnMoreLinks,
Colors,
DebugInstructions,
ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';
class SearchPage extends Component<{}> {
render() {
return (<Text style={styles.description}>Search for houses to buy! (Again)</Text>);
}
};
console.log(NavigatorIOS)
export default class App extends Component<{}> {
render() {
return (
<NavigatorIOS
initialRoute={{
component: SearchPage,
title: 'My Initial Scene',
}}
style={{flex: 1}}
/>
);
}
}
const styles = StyleSheet.create({
description: {
fontSize: 18,
textAlign: 'center',
color: '#656565',
marginTop: 65,
},
container: {
flex: 1,
},
});
I'm getting an error as follows:
Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.
Check the render method of App.
NavigatorIOS is Deprecated since 0.6.
Learn about alternative navigation solutions at http://facebook.github.io/react-native/docs/navigation.html
Example react-navigation:
/**
* Sample React Native App
* https://github.com/facebook/react-native
*
* #format
* #flow
*/
'use strict';
import React,{Component} from 'react';
import { createAppContainer } from 'react-navigation';
import { createStackNavigator } from 'react-navigation-stack';
import {
SafeAreaView,
StyleSheet,
ScrollView,
View,
Button,
Text,
StatusBar,
} from 'react-native';
import {
Header,
LearnMoreLinks,
Colors,
DebugInstructions,
ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';
class HomePage extends Component<{}> {
render() {
return <View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
<Text>Home Screen</Text>
<Button title="Go to SecondPage" onPress={() => this.props.navigation.push('SecondPage')}/>
</View>
}
};
class SecondPage extends Component<{}> {
render() {
return <View style={{flex: 1, alignItems: 'center', justifyContent: 'center'}}>
<Text style={styles.description}>Second Page</Text>
<Button title = "Go to Third Page" onPress={() => this.props.navigation.navigate('ThirdPage')}> </Button>
</View>
}
};
class ThirdPage extends Component<{}> {
render() {
return <View style={{flex: 1, alignItems: 'center', justifyContent: 'center'}}>
<Text style={styles.description}>Third Page</Text>
<Button title = "Go to Home Page" onPress={() => this.props.navigation.navigate('Home')}> </Button>
</View>
}
};
const AppNavigator = createStackNavigator(
{
Home : HomePage,
SecondPage : SecondPage,
ThirdPage : ThirdPage,
},
{
initialRouteName: 'Home',
}
);
const Appcontainer = createAppContainer(AppNavigator);
export default class App extends Component<{}> {
render() {
return <Appcontainer />;
}
}
const styles = StyleSheet.create({
description: {
fontSize: 18,
textAlign: 'center',
color: '#656565',
marginTop: 65,
},
container: {
flex: 1,
},
});

Trying to navigate to another screen based on text click, but got an error "undefined is not an object (evaluation navigate.navigateToScreen)"

I've been trying to navigate from Text to another screen but this error pops up, can anyone please help
This is a testing sheet for a bigger problem I have posted here Navigate when clicking on image doesn't work , I am trying to structure my code to navigate from an Image to a page. Thanks for helping
import React from 'react';
import { AppRegistry, StyleSheet, View, Image, TouchableOpacity, Text } from "react-native";
import { createAppContainer, createStackNavigator, StackActions, NavigationActions } from 'react-navigation'; // Version can be specified in package.json
import AddDocScreen from './Menu/AddDocScreen'
export default class Mock extends React.Component {
render() {
const navigate = this.props.navigation
return (
<View style={styles.container}>
<TouchableOpacity
onPress={() => navigate.navigateToScreen(navigationAction)}>
<View><Text>Click Me</Text></View>
</TouchableOpacity>
</View>
)
}
}
const navigationAction = NavigationActions.navigate({
routeName: 'AddDocSreen',
})
function navigateToScreen(navigationAction) {
() => {
return navigationAction
}
}
const doc = createStackNavigator({
AddDocScreen: { screen: AddDocScreen },
});
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: 'rgba(215,215,215,1)',
alignItems: 'center',
justifyContent: 'center',
},
})
Use it like this:
import React from 'react';
import { View, Text, TouchableOpacity } from 'react-native';
import { createStackNavigator, createAppContainer } from 'react-navigation';
import AddDocScreen from './Menu/AddDocScreen'
class Mock extends React.Component {
render() {
return (
<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center',backgroundColor: 'rgba(215,215,215,1)'}}>
<Text>Home Screen</Text>
<TouchableOpacity onPress={() => this.props.navigation.navigate('Details')}>
<View><Text>Click Me</Text></View>
</TouchableOpacity>
</View>
);
}
}
const RootStack = createStackNavigator(
{
Mock: Mock,
AddDocScreen: AddDocScreen,
{
initialRouteName: 'Mock',
}
);
const AppContainer = createAppContainer(RootStack);
export default class App extends React.Component {
render() {
return <AppContainer />;
}
}

While adding navigation PLugin its not Working showing error

New to react-native and trying to make react-native with the sample app.
I created Two Screen. LOGIN AND FORM Screen.
I want Once I clicked to login button it will go to form screen. I add library of navigation for routing.
But it shows error.
App.js
import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View} from 'react-native';
import {StackNavigator} from 'react-navigation';
import Login from './src/pages/pages/Login';
import Form from './src/pages/pages/Form';
const AppNavigator = StackNavigator({
Login: { screen: Login},
Form: { screen: Form},
});
export default class App extends Component<{}> {
render() {
return (
<View style ={styles.container}>
<AppNavigator/>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center'
}
})
Login.js
import React, {Component} from 'react';
import {
StyleSheet,
Text,
View,
TextInput,
Button,
TouchableOpacity
} from 'react-native';
export default class Login extends Component {
state = {
username: '', password: ''
}
onChangeText = (key, val) => {
this.setState({ [key]: val })
}
signUp = async () => {
const { username, password } = this.state
try {
// here place your signup logic
console.log('user successfully signed up!: ', success)
} catch (err) {
console.log('error signing up: ', err)
}
}
render() {
return (
<View style={styles.container}>
<TextInput
style={styles.input}
placeholder='Username'
autoCapitalize="none"
placeholderTextColor='white'
onChangeText={val => this.onChangeText('username', val)}
/>
<TextInput
style={styles.input}
placeholder='Password'
secureTextEntry={true}
autoCapitalize="none"
placeholderTextColor='white'
onChangeText={val => this.onChangeText('password', val)}
/>
<TouchableOpacity
style={styles.button}
onPress={() => this.props.navigation.navigate('Form') } title = "Form"
>
<Text > LOGIN </Text>
</TouchableOpacity>
</View>
);
}
}
const styles = StyleSheet.create({
input: {
width: 350,
height: 55,
backgroundColor: '#ff4000',
margin: 10,
padding: 8,
color: 'white',
borderRadius: 4,
fontSize: 18,
fontWeight: '500',
},
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center'
},
button: {
alignItems: 'center',
backgroundColor: '#58d63b',
padding: 10,
width:320,
height:55
}
})
Form.js
import React, {Component} from 'react';
import {View,Text} from 'react';
export default class Login extends Component {
render() {
return (
<View>
<Text> This Is Form Page</Text>
</View>
);
}
}
index.js
import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';
AppRegistry.registerComponent(appName, () => App);
THIS IS THE ERROR I HAVE GETTING ALL THE TIME
I tried everything clear cache and re-install npm but no luck.
Anyone can help.It would be great.