引入Dimensions
通过Dimensions.get("window").width/height; 获取屏幕高宽
代码示例:
import React,{Component} from 'react'
import {Text,View,ScrollView,StyleSheet, Alert,Dimensions} from 'react-native'
export default class App extends Component{
componentDidMount(){
const { width, height } = Dimensions.get('window');
}
render(){
return(
<>
<View>
</View>
</>
)
}
}