/**
* Sample React Native App
* https://github.com/facebook/react-native
* @flow
*/
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View
} from 'react-native';
class Blink extends Component {
constructor(props) {
super(props);
this.state = { showText: true };
// 每1000毫秒对showText状态做一次取反操作
setInterval(() => {
this.setState({ showText: !this.state.showText });
}, 1000);
}
render() {
// 根据当前showText的值决定是否显示text内容
let display = this.state.showText ? this.props.text : ' ';
return (
<Text>{display}</Text>
);
}
}
export default class DTest extends Component {
render() {
return (
<View style={styles.container}>
<Blink text='张三' />
<Blink text='李四' />
<Blink text='王五' />
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
}
});
AppRegistry.registerComponent('DTest', () => DTest);
