尝试在 react-native 中使用 Button 时出错 [英] Error when trying to use Button in react-native

问题描述

在制作一个简单的 react-native 程序时，我无法让 组件工作.在 react-native run-android 之后我总是得到的错误是

When making a simple react-native program I cannot get the <Button> component to work. The error I always get after react-native run-android is

java.lang.String 不能强制转换为com.facebook.react.uimanager.AccessibilityDelegateUtil$AccessibilityRole

java.lang.String cannot be cast to com.facebook.react.uimanager.AccessibilityDelegateUtil$AccessibilityRole

当我省略按钮时，一切正常，我可以点击文本就好了.

When I omit the button, everything works fine, and I can click the Text just fine.

代码:

import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View, Button } from 'react-native';



type Props = {};
export default class App extends Component<Props> {
  render() {
    return (
        <View style={styles.container}>

        <Button onPress={()=>console.log('hi')} title="go"/>
        <Text onPress={()=>console.log('hi')}>Welcome to React Native!</Text>

      </View>
        );
      }
 }

一些依赖:

  "dependencies": {
 maar eens alles goed staat hoop ik gewoon dat de miserie gedaan is, cf   "react": "16.6.0-alpha.8af6728",
    "react-native": "0.57.3"
  },

推荐答案

我刚刚在 0.55 版本上测试了您的代码.这是完全正确的并且工作正常.您的 react-native 版本可能有误.

I've just tested your code on version 0.55. It was perfectly correct and worked fine. I'm likely to have error with your react-native version.

初始化低版本

react-native init --version="react-native@0.55.0" YOUR_APP_NAME

在那之前也试试这个

<Button
    onPress={() => alert('hi')}
    title="Press Me"
 >
   Press Me
</Button>

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