使用DeviceEventEmitter前需添加
import {
AppRegistry,
StyleSheet,
Text,
View,
DeviceEventEmitter
} form 'react-native';
添加DeviceEventEmitter
componentDidMount() {
this.subscription = DeviceEventEmitter.addListener('userNameDidChange',(info) =>{
alert('通知' + info);
})
},
移除DeviceEventEmitter
componentWillUnmount() {
// 移除
this.subscription.remove();
},
发送通知
DeviceEventEmitter.emit('userNameDidChange', '通知来了');
