无法导航到新屏幕反应本机收到错误未定义对象 navigate.navigation
Unable to navigate to new screen react native getting an error undefined Object navigate.navigation
无法导航到新屏幕 React Native 出现错误:
TypeError: undefined 不是对象(正在计算 'navigation.navigate')
谁能解释一下我哪里出错了?
下面是我正在使用的代码。
const MessagesScreen = ({navigation}) => {
return (
<Container>
<FlatList
data={Messages}
keyExtractor={item=>item.id}
renderItem={({item}) => (
<Card onPress={() => navigation.navigate('Chat', {userName: item.userName})}>
<UserInfo>
<UserImgWrapper>
<UserImg source={item.userImg} />
</UserImgWrapper>
<TextSection>
<UserInfoText>
<UserName>{item.userName}</UserName>
<PostTime>{item.messageTime}</PostTime>
</UserInfoText>
<MessageText>{item.messageText}</MessageText>
</TextSection>
</UserInfo>
</Card>
)}
/>
</Container>
);
};
export default MessagesScreen;
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center'
},
});
您似乎忘记在导航器堆栈中声明您的屏幕。像这样
<Stack.Screen
name="MessagesScreen"
component={MessagesScreen} />
这是来自官方页面的示例
react navigation v5
import * as React from 'react';
import { View, Text } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';
function HomeScreen() {
return (
<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
<Text>Home Screen</Text>
</View>
);
}
const Stack = createStackNavigator();
function App() {
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen name="Home" component={HomeScreen} />
</Stack.Navigator>
</NavigationContainer>
);
}
export default App;
无法导航到新屏幕 React Native 出现错误:
TypeError: undefined 不是对象(正在计算 'navigation.navigate')
谁能解释一下我哪里出错了? 下面是我正在使用的代码。
const MessagesScreen = ({navigation}) => {
return (
<Container>
<FlatList
data={Messages}
keyExtractor={item=>item.id}
renderItem={({item}) => (
<Card onPress={() => navigation.navigate('Chat', {userName: item.userName})}>
<UserInfo>
<UserImgWrapper>
<UserImg source={item.userImg} />
</UserImgWrapper>
<TextSection>
<UserInfoText>
<UserName>{item.userName}</UserName>
<PostTime>{item.messageTime}</PostTime>
</UserInfoText>
<MessageText>{item.messageText}</MessageText>
</TextSection>
</UserInfo>
</Card>
)}
/>
</Container>
);
};
export default MessagesScreen;
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center'
},
});
您似乎忘记在导航器堆栈中声明您的屏幕。像这样
<Stack.Screen
name="MessagesScreen"
component={MessagesScreen} />
这是来自官方页面的示例 react navigation v5
import * as React from 'react';
import { View, Text } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';
function HomeScreen() {
return (
<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
<Text>Home Screen</Text>
</View>
);
}
const Stack = createStackNavigator();
function App() {
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen name="Home" component={HomeScreen} />
</Stack.Navigator>
</NavigationContainer>
);
}
export default App;