我有两个屏幕,我想单击一下以使用反应导航来移动新屏幕。但我遇到了错误
this.props.navigation.navigate
这是我的代码。任何人都知道什么是问题。我跟随着每一步。
import React, {Component} from 'react';
import { AppRegistry, View, Text,StyleSheet, TextInput, Image, ScrollView, Button, TouchableOpacity} from 'react-native';
import { createStackNavigator, createAppContainer } from 'react-navigation';
import SignUp from './SignUp';
class Login extends React.Component{
constructor(props){
super(props);
this.state = { text: 'Useless Placeholder' };
}
render(){
const {navigate} = this.props.navigation;
return(
<View>
<ScrollView showsVerticalScrollIndicator={false}>
<View style={styles.button}>
<TouchableOpacity>
<Text style={styles.buttonText}>SIGN IN</Text>
</TouchableOpacity>
</View>
<View style={styles.createAccount}>
<Text style={styles.createText}
onPress={() => this.props.navigation.navigate("Home")}
>Create new account</Text>
</View>
</View>
</ScrollView>
</View>
);
}
}
module.exports = Login;
const MainNavigator = createStackNavigator({
Home: {screen: SignUp}
});
export default createAppContainer(MainNavigator);
答案 0 :(得分:1)
您的登录屏幕不是堆栈的一部分。
const MainNavigator = createStackNavigator({
Home: {screen: SignUp}
});
只需在登录页面的单独的组件上将其添加到堆栈顶部,即可进行导航。
像这样
const MainNavigator = createStackNavigator({
Login:{screen:Login}
Home: {screen: SignUp}
});
Login.js
import React, {Component} from 'react';
import { AppRegistry, View, Text,StyleSheet, TextInput, Image, ScrollView, Button, TouchableOpacity} from 'react-native';
export default class Login extends React.Component{
constructor(props){
super(props);
this.state = { text: 'Useless Placeholder' };
}
render(){
const {navigate} = this.props.navigation;
return(
<View>
<ScrollView showsVerticalScrollIndicator={false}>
<View style={styles.button}>
<TouchableOpacity>
<Text style={styles.buttonText}>SIGN IN</Text>
</TouchableOpacity>
</View>
<View style={styles.createAccount}>
<Text style={styles.createText}
onPress={() => this.props.navigation.navigate("Home")}
>Create new account</Text>
</View>
</View>
</ScrollView>
</View>
);
}
MainNavigator.js
import React, {Component} from 'react';
import { AppRegistry, View, Text,StyleSheet, TextInput, Image, ScrollView, Button, TouchableOpacity} from 'react-native';
import { createStackNavigator, createAppContainer } from 'react-navigation';
import SignUp from './SignUp';
import Login from './Login'
const MainNavigator = createStackNavigator({
Login: {screen:Login},
Home: {screen: SignUp}
});
export default createAppContainer(MainNavigator);
答案 1 :(得分:1)
您尚未在堆栈中添加“登录”屏幕 像这样
const MainNavigator = createStackNavigator({
Login : {screen: Login},
Home: {screen: SignUp}
});