Typescript 标准expo字体脚本模板+;SafeAreaProvider/SafeAreaView正在渲染组件两次?
我刚刚开始了一个带有标准expo类型脚本的新项目,希望从react native safe area上下文中使用SafeAreaProvider/SafeAreaView。当我这样做,并输入一个组件渲染的图像;它显示double(渲染两次) 我尝试了一个控制台日志,发现它被重新下载了3次,如何防止这种情况发生? * App.tsxTypescript 标准expo字体脚本模板+;SafeAreaProvider/SafeAreaView正在渲染组件两次?,typescript,react-native,expo,safeareaview,Typescript,React Native,Expo,Safeareaview,我刚刚开始了一个带有标准expo类型脚本的新项目,希望从react native safe area上下文中使用SafeAreaProvider/SafeAreaView。当我这样做,并输入一个组件渲染的图像;它显示double(渲染两次) 我尝试了一个控制台日志,发现它被重新下载了3次,如何防止这种情况发生? * App.tsx 从“世博会状态栏”导入{StatusBar}; 从“React”导入React; 从“react native safe area context”导入{Saf
从“世博会状态栏”导入{StatusBar};
从“React”导入React;
从“react native safe area context”导入{SafeAreaProvider,SafeAreaView};
从“/hooks/useCachedResources”导入useCachedResources;
从“/hooks/useColorScheme”导入useColorScheme;
从“/Navigation”导入导航;
从“/screens/HomeScreen/HomeScreen”导入主屏幕;
导出默认函数App(){
const isLoadingComplete=useCachedResources();
const colorScheme=useColorScheme();
如果(!isLoadingComplete){
返回null;
}否则{
返回(
);
}
}
HomeScreen.tsx
import*as React from“React”;
从“react native”导入{Image};
从“../../components/Themed”导入{文本,视图}”;
从“/styles”导入样式;
常量主屏幕=()=>{
返回(
);
};
导出默认主屏幕;
可能解释了一个重新渲染:。这里您还使用了一个导航器,它测量挂载上的布局,并可以解释另一个布局。尝试进一步缩小范围,仅在根位置渲染图像,等等,以了解是哪些组件导致了它
import { StatusBar } from "expo-status-bar";
import React from "react";
import { SafeAreaProvider, SafeAreaView } from "react-native-safe-area-context";
import useCachedResources from "./hooks/useCachedResources";
import useColorScheme from "./hooks/useColorScheme";
import Navigation from "./navigation";
import HomeScreen from "./screens/HomeScreen/HomeScreen";
export default function App() {
const isLoadingComplete = useCachedResources();
const colorScheme = useColorScheme();
if (!isLoadingComplete) {
return null;
} else {
return (
<SafeAreaProvider>
<SafeAreaView style={{ flex: 1, backgroundColor: "black" }}>
<HomeScreen />
<Navigation colorScheme={colorScheme} />
<StatusBar />
</SafeAreaView>
</SafeAreaProvider>
);
}
}
import * as React from "react";
import { Image } from "react-native";
import { Text, View } from "../../components/Themed";
import styles from "./styles";
const HomeScreen = () => {
return (
<View style={styles.container}>
<Image
style={styles.image}
source={{
uri:
"https://www.homewallmurals.co.uk/ekmps/shops/allwallpapers/images/captain-marvel-higher-further-faster-61x91-5cm-movie-posters-31607-1-p.jpg",
}}
></Image>
</View>
);
};
export default HomeScreen;