最近在學React Native，在慕課網學習了crazyboy的基礎入門視頻，把吹氣球使用props的代碼照敲了一遍，記錄下。
初始化一個項目後，首先在VScode項目目錄中導入氣球圖片
然後在App.j中進行相應代碼修改
/**
* Sample React Native App
* https://github.com/facebook/react-native
*
* @format
* @flow
*/
import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View, Image} from 'react-native';
const instructions = Platform.select({
ios: 'Press Cmd+R to reload,\n' + 'Cmd+D or shake for dev menu',
android:
'Double tap R on your keyboard to reload,\n' +
'Shake or press menu button for dev menu',
});
type Props = {};
export default class App extends Component<Props> {
constructor(props){
super(props);
this.state={
size: 80,
}
}
render() {
return (
<View style={styles.container}>
<Text style={styles.qiqiu} onPress={()=>{
this.setState({
size:this.state.size+10
})
}
}>吹啊，吹啊</Text>
<Text style={styles.qiqiu} onPress={()=>{
this.setState({
size:this.state.size-10
})
}
}>變小，變小</Text>
<Image source={require("./photo/qiqiu.jpg")} style={{width:this.state.size, height:this.state.size}} />
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
qiqiu:{
fontSize: 20,
margin: 10,
},
});
運行效果：
