我想将仪表板加载为 react Native 底部选项卡中的活动选项卡。每当仪表板加载时导航,但每当我移动到仪表板时,它都会移动到收件箱屏幕,这是我的反应底部选项卡导航中的第一个元素。有没有办法在使用屏幕底部选项卡时创建默认屏幕?
我用于底部导航的代码是
dashboard: {
screen: createBottomTabNavigator({
inbox: {
screen: Chat,
navigationOptions: ({ navigation }) => ({
title: 'Inbox',
}),
},
favourite: {
screen: Favourite,
navigationOptions: ({ navigation }) => ({
title: 'Favourite',
}),
},
dashboard: {
screen: Dashboard,
navigationOptions: ({ navigation }) => ({
title: 'Home',
initialRouteName: 'dashboard'
}),
},
setting: {
screen: SettingScreen,
navigationOptions: ({ navigation }) => ({
title: 'Setting',
}),
},
survey: {
screen: NutritionistSurvey,
navigationOptions: ({ navigation }) => ({
title: 'Survey',
}), …Run Code Online (Sandbox Code Playgroud) 我想模拟在我的功能组件中使用的 useNavigation 钩子。任何解决方法如何使用玩笑来模拟它?
import React from 'react';
import { useNavigation } from '@react-navigation/native';
import { TouchableOpacity } from 'react-native';
const MyComponent = () => {
const { navigate } = useNavigation();
const navigateToScreen = () => {
navigate('myScreen', { param1: 'data1', param2: 'data2' })
}
return (<TouchableOpacity onPress={navigateToScreen}>
Go To Screen
</TouchableOpacity>)
}
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如何测试在导航功能中传递的参数?
jestjs react-navigation react-navigation-stack react-navigation-v5
我有 3 个选项卡,每个选项卡都包含一组堆栈导航器。
const HomeNavigator = createStackNavigator();
const HomeStackNavigator = ({navigation, route}) => {
return (
<HomeNavigator.Navigator>
<HomeNavigator.Screen
name="Home"
component={Home}
/>
<HomeNavigator.Screen
name="Profile"
component={Profile}
/>
<HomeNavigator.Screen
name="Settings"
component={Settings}
/>
</HomeNavigator.Navigator>
);
};
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const StoreNavigator = createStackNavigator();
const StoreStackNavigator = ({navigation, route}) => {
return (
<StoreNavigator.Navigator>
<StoreNavigator.Screen
name="OurStore"
component={Store}
/>
</StoreNavigator.Navigator>
);
};
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const CommunityNavigator = createStackNavigator();
const CommunityStackNavigator = ({navigation, route}) => {
return (
<CommunityNavigator.Navigator>
<CommunityNavigator.Screen
name="Community"
component={Community}
/>
<CommunityNavigator.Screen
name="CommunityReply"
component={CommunityReply}
options={communityReplyOptions}
/>
<CommunityNavigator.Screen …Run Code Online (Sandbox Code Playgroud) react-native react-navigation react-navigation-stack react-navigation-bottom-tab
我正在使用 React Native 应用程序,它在控制台中显示警告
import {createStackNavigator} from 'react-navigation-stack';
import {fromRight} from 'react-navigation-transitions';
const ApplyNowNav = createStackNavigator(
{
Home,
Profile,
},
{
headerMode: 'none',
transitionConfig: () => fromRight(),
}
);
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'createStackNavigator' 中的警告弃用:
移除了 transitionConfig' 以支持新的动画 API
是否有解决此问题的解决方案?
我想将堆栈导航器中默认后退按钮的行为本地自定义到一个屏幕。
在详细信息中,假设堆栈上有 screen1|screen2,我想在按下按钮后将一些道具从 screen2 传递到 screen1。
我花了很多时间阅读 React 导航文档、在互联网上搜索和编码,但我无法做到这一点。
来自文档
在某些情况下,您可能希望比通过上述选项更多地自定义后退按钮,在这种情况下,您可以将 headerLeft 选项设置为将呈现的 React 元素 我知道问题涉及 goBack( ) headerRight 组件的函数。
我想用诸如 navigation.navigate("previousScreen",{{..props}}) 之类的内容覆盖与 headerLeft 后退按钮相关的默认函数 goBack() 。
而且(这非常重要!!)我想在特定屏幕本地使用此行为,而不是全局。
我尝试过类似的事情但不起作用。
export default function App(){
return(
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen name="FirstScreen" component={FirstScreen}/>
<Stack.Screen name="SecondScreen" component={SecondScreen} options={{headerLeft: () => (
<HeaderBackButton
onPress={() =>navigation.navigate("FirstScreen",{//stuff//})}
title="Info"
color="#fff"
/>
),}}/>
</Stack.Navigator>
</NavigationContainer>
)}
Run Code Online (Sandbox Code Playgroud) 在我下面的代码中,当我使用 useNavigation() 时,它会给出一个错误,比如我的问题如何使用 useNavigation,请任何人都可以解决这个错误...错误:找不到导航对象。您的组件是否在导航器的屏幕内?我按照这里的代码https://rnfirebase.io/messaging/notifications#handling-interaction
import React, {useState, useEffect } from 'react';
import messaging from '@react-native-firebase/messaging';
import { NavigationContainer, useNavigation } from "@react-navigation/native";
import { createStackNavigator, HeaderTitle, } from "@react-navigation/stack";
const Stack = createStackNavigator();
function App(props) {
const navigation = props.navigation
//const navigation = useNavigation();
const [initialRoute, setInitialRoute] = useState('Splash Screen');
useEffect(() => {
messaging().onMessage(remoteMessage => {
navigation.navigate("Description Screen");
console.log(props.navigation)
});
}, []);
return (
<NavigationContainer>
<Stack.Navigator
initialRouteName={initialRoute}
headerMode="none"
screenOptions={{
gestureEnabled: true,
}}
>
<Stack.Screen name="Splash Screen" component={SplashScreen} />
<Stack.Screen …Run Code Online (Sandbox Code Playgroud) android ios react-native react-native-navigation react-navigation-stack
我收到错误:
不变违规:withNavigation只能用于导航器的视图层次结构.包装的组件无法从道具或上下文访问导航
我不知道为什么,因为我withNavigation在我的应用程序的其他组件中使用它,它的工作原理.我认为它所处理的组件与导致错误的组件没有区别.
码:
组件:
const mapStateToProps = (state: State): Object => ({
alertModal: state.formControls.alertModal
})
const mapDispatchToProps = (dispatch: Dispatch<*>): Object => {
return bindActionCreators(
{
updateAlertModalHeight: updateAlertModalHeight,
updateAlertModalIsOpen: updateAlertModalIsOpen,
updateHasYesNo: updateAlertModalHasYesNo
},
dispatch
)
}
class AlertModalView extends Component<AlertModalProps, State> {
render(): Node {
return (
<View style={alertModalStyle.container}>
<PresentationalModal
style={presentationalModalStyle}
isOpen={this.props.alertModal.isOpen}
title={this.props.alertModal.title}
navigation={this.props.navigation}
updateHasYesNo={this.props.updateHasYesNo}
message={this.props.alertModal.message}
updateAlertModalHeight={this.props.updateAlertModalHeight}
viewHeight={this.props.alertModal.viewHeight}
hasYesNo={this.props.alertModal.hasYesNo}
yesClicked={this.props.alertModal.yesClicked}
updateAlertModalIsOpen={this.props.updateAlertModalIsOpen}
/>
</View>
)
}
}
// $FlowFixMe
const AlertModalViewComponent = connect(
mapStateToProps,
mapDispatchToProps
)(AlertModalView)
export default …Run Code Online (Sandbox Code Playgroud) react-native redux react-navigation react-navigation-drawer react-navigation-stack
如果我设置headerTransparent: true通常在其下方呈现的其他内容,则会在其下方移动。我该如何避免呢?
我的代码:
export class RegisterScreen extends Component {
static navigationOptions = {
title: strings.header,
headerTitleStyle: { color: '#fff' },
headerTintColor: '#fff',
headerTransparent: true,
};
render() {
return <Display onSignUpPressed={() => {}} onHelpPressed={() => {}} />;
}
}
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具有透明标题(与:(重叠):
没有透明标题:
我想使内容对齐,就好像标题具有高度一样。所以我希望内容像第二张图片一样,但要像第一张图片一样具有透明的标题。
寻找有关在 SwiftUI 中从导航堆栈中弹出多个视图的简单方法的一些指导。我有 4 个使用 NavigationLink 链接在一起的视图。在最后一个视图中,我想跳回初始 ContentView,从堆栈中弹出所有其他视图。我不想使用每个视图的 NavigationBar 上的“返回”按钮来实现这一点。
提前致谢。鲍勃。'''
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
VStack {
NavigationLink(destination: BView()) {
Text("This is View A, now go to View B.")
}
}
}
}
}
struct BView: View {
var body: some View {
NavigationLink(destination: CView()) {
Text("This is View B, now go to View C.")
}
}
}
struct CView: View {
var body: some View {
NavigationLink(destination: DView()) {
Text("This …Run Code Online (Sandbox Code Playgroud) 我正在使用React Navigation x5,我正在StackNavigator加载一堆屏幕。unmountOnBlur我想在模糊时卸载一个特定的屏幕组件,以获得与使用DrawerNavigator.
我怎样才能做到这一点?
react-native ×8
reactjs ×2
android ×1
ios ×1
jestjs ×1
native ×1
react-navigation-bottom-tab ×1
redux ×1
swiftui ×1