好,因此将Expo与一个WebView组件和一个动画(ScaleX)叠加的本地组件(Expo Snack中的红色框)一起使用。
代码可以在iOS上完美运行,但不能在android模拟器或设备上运行。 而是在网页javascript中执行HTML / WebView onclick处理程序。
删除动画组件后,它也可以在Android上运行。
这是一个已知问题还是如何纠正?
onPress = {()=>警报()}
博览会小吃https://snack.expo.io/@psquizzle/webview-example
import React, { Component, useEffect, useState , useRef} from 'react';
import { WebView } from 'react-native-webview';
import { View, Text, TouchableOpacity, Image, Animated} from 'react-native';
const SpeakerButton = props => {
const [fadeAnim] = useState(new Animated.Value(0)); // Initial value for opacity: 0
React.useEffect(() => {
if(props.show){
Animated.timing(fadeAnim, {
toValue: 1,
duration: 500,
useNativeDriver: true,
}).start();
} else {
Animated.timing(fadeAnim, {
toValue: 0,
duration: 0,
useNativeDriver: true,
}).start();
}
}, [props.show]);
return (
<Animated.View
widthValue={parseFloat(fadeAnim*60)}
style={{
...props.style,
transform: [
{ scaleX: fadeAnim }
] ,
}}
>
{props.children}
</Animated.View>
);
};
export default function App() {
const initialHTMLContent = `
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<meta name="author" content="">
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script>document.addEventListener("click", function(){
alert("Hello World");
});</script>
</head>
<body>
<h1>Hello</h1>
<my-component source-url="/api/video/v1/us-west-2.893648527354.channel.DmumNckWFTqz.m3u8"></my-component>
</body>
</html>`;
return (
<View
style={{
flex: 1,
}}>
<WebView
originWhitelist={['*']}
javaScriptEnabled={true}
domStorageEnabled={true}
source={{
html: initialHTMLContent,
baseUrl: 'https://hotels.yourroom.eu',
}}
/>
<SpeakerButton show={true} >
<TouchableOpacity onPress={()=>alert('Hello Back')}
style={{display:'flex', alignItems:'center',justifyContent:'center', position:'absolute', bottom:250, right:-5,zIndex:20, backgroundColor:'red',width:60,height:50, borderRadius:10, shadowColor: '#0000008e',
shadowOffset: { width: 5, height: 5 },
shadowOpacity: 0.8,
shadowRadius: 5,
elevation: 5}}>
<Image style={{ height:30, width:30, tintColor:'white', marginRight:5}} ></Image>
</TouchableOpacity>
</SpeakerButton>
</View>
);
}
任何帮助将不胜感激。
要查看此问题,请在Adroid Emulator模式下运行Expo Snack,然后单击红色框。
答案 0 :(得分:0)
因此,这似乎是android上CSS样式呈现的问题,只需将cess移至父元素,现在其行为便符合预期。
<SpeakerButton show={true} style={{display:'flex', alignItems:'center',justifyContent:'center', position:'absolute', bottom:250, right:-5,backgroundColor:'red',width:60,height:50, borderRadius:10, shadowColor: '#0000008e',
shadowOffset: { width: 5, height: 5 },
shadowOpacity: 0.8,
shadowRadius: 5,
elevation: 5}} >
<TouchableOpacity onPress={()=>alert('Hello Back')}
>
<Image style={{ height:30, width:30, tintColor:'white', marginRight:5}} ></Image>
</TouchableOpacity>
</SpeakerButton>