在解决我的问题没有成功后,在这里,我不得不创建我的所有类的新问题。
我是本机react的新手,并且在弄清楚如何通过传递参数从一个类导航到另一个类时遇到问题,并感谢您的帮助。
我想做的就是:
- 带有包含 CustomButton 的平面列表的 SessionCreate
- 通过单击 CustomButton 从 SessionCreate 导航到 ItemConfig
- 将参数“元素”传递给 ItemConfig
- 显示在 ItemConfig 中传递的参数的内容
使用此设置,将一个空的“元素”作为参数传递给 ItemConfigScreen(但不会发生错误):
应用程序.js:
//Views
function Home({ navigation }) {
return (
<HomeScreen />
);
}
function Session({ navigation }) {
return (
<SessionScreen />
);
}
//subviews
function SessionCreate({ navigation }) {
return (
<SessionCreateScreen />
);
}
function ItemConfig({ navigation }) {
return (
<ItemConfigScreen />
);
}
//navigation stacks
const SessionStack = createStackNavigator();
function SessionStackScreen({ navigation }) {
return (
<SessionStack.Navigator>
<SessionStack.Screen
name="Session"
component={Session}
options={{ tabBarLabel: 'Session!' }}
/>
<SessionStack.Screen
name="SessionCreate"
component={SessionCreate}
options={{ tabBarLabel: 'SessionCreate!' }}
/>
<SessionStack.Screen
name="ItemConfig"
component={ItemConfig}
options={{ tabBarLabel: 'ItemConfig!' }}
/>
</SessionStack.Navigator>
);
}
//Navbar Bottom
const Tab = createBottomTabNavigator();
function App() {
return (
<View style={[theme.colcontainer, { flexDirection: "column" }]} >
<NavigationContainer>
<Tab.Navigator
screenOptions={({ route }) => ({
tabBarIcon: ({ focused, color, size }) => {
let iconName;
if (route.name === 'Home') {
iconName = focused ? 'home' : 'home-outline';
} else if (route.name === 'Session') {
iconName = focused ? 'book' : 'book-outline';
}
// dynamic ionicon
return <Ionicons name={iconName} size={size} color={color} />;
},
})}
>
<Tab.Screen name="Home" component={Home} />
<Tab.Screen name="Session" component={SessionStackScreen} />
</Tab.Navigator>
</NavigationContainer>
</View >
);
}
export default App;
SessionScreen.js:
function SessionScreen() {
const navigation = useNavigation();
return (
<View style={[theme.container, { flexDirection: "column" }]} >
<View>
<TouchableOpacity onPress={() => navigation.navigate('SessionCreate')}>
<Text >Create Session</Text>
</TouchableOpacity>
</View>
</View >
);
}
export default SessionScreen;
SessionCreateScreen.js:
//data
const sessionElements = [
{
id: "1",
title: "title1"
}
];
function SessionCreateScreen() {
const navigation = useNavigation()
const renderItemConfiguration = ({ item }) => (
<CustomButton element={item.title} onPress={() => navigation.navigate('ItemConfig', { element: 'item.title' })} />
);
return (
<View style={{ flexDirection: "column", flex: 2}} >
<SafeAreaView >
<FlatList
data={sessionElements}
renderItem={renderItemConfiguration}
keyExtractor={(item) => item.id}
/>
</SafeAreaView>
</View >
);
}
export default SessionCreateScreen;
ItemConfigScreen.js:
const element = "";
function ItemConfigScreen() {
return (
<ScrollView >
<View style={{ flexDirection: "column", flex: 2}} >
<Text>Configure {element} here</Text>
</View >
</ScrollView>
);
}
export default ItemConfigScreen;
任何帮助表示赞赏。