react native 路由跳转后页面不刷新问题

DeviceEventEmitter

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从C页面跳转到A页面，并不会调用render，而A页面的数据此时需要刷新，怎么办？使用DeviceEventEmitter

import  {DeviceEventEmitter} from 'react-native';

componentDidMount() {

    this.subscription = DeviceEventEmitter.addListener('UPDATE_USER_DATA', this.refreshData)

};

refreshData(data) {

    this.setState({

        data: data,

    });

};

componentWillUnmount() {

    this.subscription.remove();

};

C页面的action文件中

export function addHijackPassword(navigation, holdingPassword) {

  navigation.navigate('A')

  return (dispatch, getState) => {

    ....

    DeviceEventEmitter.emit('UPDATE_USER_DATA');

  }

}