我有我的下一个飞溅,我的想法是能够在打开应用程序时显示我的应用程序 Logo ,然后转到应用程序的开始,它工作正常:
import React from 'react';
import { StyleSheet, Image, View, Text } from 'react-native';
import { StackActions, NavigationActions } from 'react-navigation';
export default class Splash extends React.Component {
goToScreen(routeName){
const resetAction = StackActions.reset({
index: 0,
actions: [NavigationActions.navigate({ routeName: routeName })],
});
this.props.navigation.dispatch(resetAction);
}
/*goToScreen(routeName){
this.props.navigation.navigate(routeName)
}*/
componentDidMount(){
setTimeout( () => {
this.goToScreen('Home')
}, 2000, this)
}
render(){
return (
<View style={styles.container}>
<Image source={{uri: 'https://i.imgur.com/r0jUwOD.png'}} style={{width: 250, height: 250}} />
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#33B747',
alignItems: 'center',
justifyContent: 'center'
},
});
问题是飞溅的位置,因为如果它以这种方式显示我,但它会创建一个名为 Splash 的下方按钮,另一方面,加载时的飞溅与下方按钮一起显示,不应该发生这种情况时,启动画面必须仅全屏显示,而不能创建按钮。
AppNavigator.js
import React from 'react';
import { createStackNavigator } from 'react-navigation-stack';
import { createBottomTabNavigator } from 'react-navigation-tabs';
import { createAppContainer } from 'react-navigation';
import { MaterialIcons, MaterialCommunityIcons } from '@expo/vector-icons';
import Splash from '../screens/Splash';
import NewsListScreen from '../screens/NewsListScreen';
import NewsItemScreen from '../screens/NewsItemScreen';
const StackNavigator = createStackNavigator({
Splash: {
screen: Splash,
navigationOptions: {
headerShown: false,
}
},
News: {
screen: NewsListScreen
},
Root: {
screen: BottomTabNavigator,
},
NewsItem: {
screen: NewsItemScreen,
navigationOptions: {
headerTitle: 'News Item'
}
},
},{
initialRouteName: 'Splash'
});
const BottomTabNavigator = createBottomTabNavigator({
Home: {
screen: StackNavigator,
navigationOptions: {
tabBarIcon: () => <MaterialIcons name="home" size={24} />
}
},
News: {
screen: StackNavigator,
navigationOptions: {
tabBarIcon: () => <MaterialCommunityIcons name="newspaper-variant-outline" size={24} />
}
}
})
export default createAppContainer(BottomTabNavigator);
App.js
import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { AppLoading } from 'expo';
import { Provider } from 'react-redux';
import AppNavigator from './app/resources/navigation/AppNavigator';
import ReduxStore from './app/resources/redux/ReduxStore';
export default function App() {
return (
<Provider store={ReduxStore}>
<AppNavigator />
</Provider>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
});
最佳答案
可以找到向 expo 管理的应用程序添加启动画面的推荐方法 here .
我已经成功地创建了一个 expo
项目并实现了您正在寻找的完全相同的行为。
我用过 react-navigation 4.x.x
这是它的外观,您可以找到 full code here
这是我用过的代码。
Splash.js
import React, { Component } from "react";
import { Text, SafeAreaView, View, StyleSheet } from "react-native";
import { StackActions, NavigationActions } from "react-navigation";
export class Splash extends Component {
goToScreen(routeName) {
const resetAction = StackActions.reset({
index: 0,
actions: [NavigationActions.navigate({ routeName: routeName })],
});
this.props.navigation.dispatch(resetAction);
}
componentDidMount() {
setTimeout(
() => {
this.goToScreen("Root");
},
2000,
this
);
}
render() {
return (
<SafeAreaView style={styles.mainContainer}>
<Text style={styles.text}> Splash Screen </Text>
</SafeAreaView>
);
}
}
const styles = StyleSheet.create({
mainContainer: {
flex: 1,
justifyContent: "center",
alignItems: "center",
backgroundColor: "#efef21",
},
text: {
fontSize: 22,
},
});
export default Splash;
Navigator.js
import { createStackNavigator } from "react-navigation-stack";
import { createAppContainer } from "react-navigation";
import Home from "./Home";
import Splash from "./Splash";
import TabNavigator from "./BottomTabNavigator";
const AppNavigator = createStackNavigator(
{
Splash: {
screen: Splash,
navigationOptions: {
headerShown: false,
},
},
Root: {
screen: TabNavigator,
navigationOptions: {
headerShown: false,
},
},
},
{
initialRouteName: "Splash",
}
);
export default createAppContainer(AppNavigator);
BottomTabNavigator.js
import { createAppContainer } from "react-navigation";
import { createBottomTabNavigator } from "react-navigation-tabs";
import Home from "./Home";
import News from "./News";
const TabNavigator = createBottomTabNavigator({
Home: {
screen: Home,
navigationOptions: {
title: "Home",
},
},
News: {
screen: News,
navigationOptions: {
title: "News",
},
},
});
export default createAppContainer(TabNavigator);
此外,我使用 react-navigation 5.x.x
你可以找到我的代码here
编辑 01
如果你想要标题,你需要为每个选项卡使用一个Stack Navigator
。
这是 BottomTabNAvigator.js
的更新代码
import { createAppContainer } from "react-navigation";
import { createBottomTabNavigator } from "react-navigation-tabs";
import { createStackNavigator } from "react-navigation-stack";
import Home from "./Home";
import News from "./News";
const HomeStack = createStackNavigator({
Home: Home,
});
const NewsStack = createStackNavigator({
News: News,
});
const TabNavigator = createBottomTabNavigator({
Home: {
screen: HomeStack,
navigationOptions: {
headerTitle: "Home",
title: "Home",
},
},
News: {
screen: NewsStack,
navigationOptions: {
title: "News",
},
},
});
export default createAppContainer(TabNavigator);
关于react-native - 向我的 expo React native 应用程序添加飞溅时出错,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/65459927/