我有Button组件,上面有文字和图标。本机库中的按钮和图标...如何在单击按钮后更改图标(图标名称属性)
代码片段:
<Button
onPress={}
transparent
iconRight
small
>
<Text style={{ color: 'red', fontSize: 18 }}>HIDE</Text>
<Icon
name='ios-arrow-down-outline'
style={{ color: 'red', fontSize: 18 }}
/>
</Button>
您可以通过按下按钮后更改状态来实现此目的:
工作演示:https://snack.expo.io/r1dHpDBvX
示例代码:
import React, { Component } from 'react';
import { Container, Header, Content, Button, Text, Icon } from 'native-base';
export default class ButtonThemeExample extends Component {
constructor() {
super();
this.state = { iconName: "md-arrow-back" };
}
render() {
return (
<Container>
<Header />
<Content>
<Button
onPress={ () => this.setState(
{ iconName: "md-arrow-down" }
)}
transparent
iconRight
small
>
<Text style={{ color: 'red', fontSize: 18 }}>HIDE</Text>
<Icon
name= {this.state.iconName}
style={{ color: 'red', fontSize: 18 }}
/>
</Button>
</Content>
</Container>
);
}
}
希望这个有效!
你可以试试这个:
const defaultImage = require('../images/defaultImage.png');
const changedImage = require('../images/changedImage.png');
class ChangeImage extends Component {
constructor() {
super();
this.state = { showDefaultImage: true };
}
renderImage() = {
const imgSrc = this.state.showDefaultImage? defaultImage : changedImage;
return (
<Image
source={ imgSrc }
/>
);
}
render(){
return (
<View>
<TouchableOpacity
onPress={ () => this.setState(
{ showDefaultImage: !this.state.showDefaultImage }
)}
/>
{this.renderImage()}
</TouchableOpacity>
</View>
);
}
}
希望这会有所帮助。