在 React Native 中制作可重用的组件? [英] Make a reusable component in react native?
问题描述
我制作了一个可重用的组件来呈现一个平面列表,当按下它时我有一个 TouchableOpacity 我想导航到一个特定的屏幕,我根据 FlateList 中的项目传递了一些参数
I make a reusable component to render a Flatlist and inside I have a TouchableOpacity when pressed it I want to navigate to a specific screen, and I pass some params based on items inside FlateList
所以当我按下导航时出现错误
So when I pressed to navigate i got an error
无法读取未定义的属性导航
can't read property navigate of undefined
这是我的代码
const OrdersList = props => {
return (
<View style={styles.container}>
<FlatList
data={props.data}
renderItem={({item}) => {
return (
<TouchableOpacity
onPress={() =>
props.navigation.navigate(props.screenName, {
...
service: item.service,
date: item.date,
...
})
}
>
<Text>
{item.service}
</Text>
</TouchableOpacity>
);
}}
/>
</View>
);
};
这是我如何使用它
<OrdersList
data={this.state.orders}
extraData={this.state}
screenName="OrderHomeDetails"
// navigate={ // when i do it i got error he can't find item and thats usual
// (this.props.navigation.navigate,
// {
// service: item.service,
// time: item.time,
// username: item.username,
// buildingNumber: item.buildingNumber,
// date: item.date,
// description: item.description,
// images: item.images,
// status: item.status,
// snapshotKey: item.snapshotKey,
// })
// }
/>
推荐答案
你的错误是告诉我渲染 OrdersList 的任何组件都没有接收导航道具.如果此组件是一个屏幕,则应导航到它以接收导航道具(这意味着它列在您使用的任何 create*navigator 中).
You error is telling me that whatever component is rendering OrdersList is not receiving navigation props. If this component is a screen, it should be navigated to in order to receive the navigation prop (which means it is listed on whatever create*navigator you used).
由于我无法完全访问您的代码,我建议您在 OrdersList 上使用 withNavigation 装饰器,这样您就不必再从父级传递导航道具了.
As I have not full access to your code, I can suggest you to use withNavigation decorator on OrdersList, so you no longer have to pass navigation props from the parent.
const OrdersList_ = props => {
return (
<View style={styles.container}>
<FlatList
data={props.data}
renderItem={({item}) => {
return (
<TouchableOpacity
onPress={() =>
props.navigation.navigate(props.screenName, {
...
service: item.service,
date: item.date,
...
})
}
>
<Text>
{item.service}
</Text>
</TouchableOpacity>
);
}}
/>
</View>
);
};
const OrdersList = withNavigation(OrdersList)
<OrdersList
data={this.state.orders}
extraData={this.state}
screenName="OrderHomeDetails"
// navigate={ // when i do it i got error he can't find item and thats usual
// (//no need to pass navigation props anymore
// {
// service: item.service,
// time: item.time,
// username: item.username,
// buildingNumber: item.buildingNumber,
// date: item.date,
// description: item.description,
// images: item.images,
// status: item.status,
// snapshotKey: item.snapshotKey,
// })
// }
/>
参考:https://reactnavigation.org/docs/en/with-navigation.html
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