React-Native 错误 this.setState 不是函数

Question

我正在使用下面的库为每个 ApiRequest 实现回调（onSuccess、onError）。但是我在触发事件时更新状态时遇到问题。我试图删除所有内容，只保留基本逻辑。我不知道为什么会出错。图书馆：https://www.npmjs.com/package/react-native-simple-events

下面是我的代码

ApiRequest.js

import Events from 'react-native-simple-events';
export function login(email, password) {
       Events.trigger('LoginSuccess', 'response');
}

Login.js

import React, { Component, } from 'react'
import {
  View,
  Text,
} from 'react-native'
import Events from 'react-native-simple-events';

import * as request from '../../network/ApiRequest'
class LoginScreen extends Component {

  static propTypes = {}

  static defaultProps = {}

  constructor(props) {
    super(props)
    this.state = {
      status: "new"
    }
  }

  componentDidMount() {
    Events.on('LoginSuccess', 'myID', this.onLoginSuccess); 
    request.login("abc","def")

  }
    componentWillUnmount() {

      Events.rm('LoginSuccess', 'myID');

    }

  onLoginSuccess(data){ 
    this.setState({ //=>error here
       status : "done"
    });
  }
  render() {
    return (
      <View>
        <Text>
          {this.state.status}
        </Text>
      </View>
    )
  }
}

如果您需要更多信息，请告诉我

Answer 1

您需要在 onLoginSuccess 方法上绑定它：

Events.on('LoginSuccess', 'myID', this.onLoginSuccess.bind(this));

React-Native 错误 this.setState 不是函数

React-Native error this.setState is not a function

setstate

react-native