我正在尝试将term
从HomeStackScreen传递到HomeScreen函数中,该函数曾用于在HomeStack中创建.Screen
。我尝试过将它作为道具和HomeStack.Screen中的初始参数传递。我可以更改状态,并可以通过下面的console.log()
确认。好像是我的Home组件在创建后没有重新渲染/更新,但是我不确定如何强制执行该更新。我不确定我缺少什么逻辑,如果有人能够指出正确的方向,我将不胜感激。
我已经在控制台中包含了我的代码,实际输出以及我认为我在下面的控制台中编写的内容。
任何技巧或指针都很好。提前致谢。
import React, {useState}from 'react';
import {createStackNavigator} from '@react-navigation/stack';
import Home from '../screens/home';
import HeaderLeft from '../components/headerLeft';
import HeaderRight from '../components/headerRight';
function HomeScreen({term}) {
console.log('Made it here!'.concat(term))
return (
<Home />
);
}
const HomeStack = createStackNavigator();
function HomeStackScreen() {
const [term, setTerm] = useState('First State');
console.log(term);
return (
<HomeStack.Navigator>
<HomeStack.Screen name=" "
component= {HomeScreen} initialParams = {{term}}
options = {{
headerStyle:{
backgroundColor: "#121212",
borderBottomColor:'#121212',
height:105,
shadowColor:'transparent'
},
headerLeft: () => <HeaderLeft/>,
headerRight: () => <HeaderRight setTerm = {setTerm}/>,
}}/>
</HomeStack.Navigator>
)
}
export default HomeStackScreen;
控制台:
First State
Made it here!undefined
Second State
我以为我在控制台上写的内容:
First State
Made it here!First State
Second State
Made it here!Second State
假设您正在使用react-navigation v5,您可以通过结帐参数更改here
开
`function HomeScreen({term}) {
console.log('Made it here!'.concat(term))
return (
<Home />
);
}`
您可以将其更改为
`function HomeScreen({route: {
params: { term },
},}) {
console.log('Made it here!'.concat(term))
return (
<Home />
);
}`