带大括号的表示在导出文件中使用的是export class 组件类名称 extends Component 而我们常见的带大括号引入的组件,都是从一些第三方库中引入的组件文件,例如从react-native中引入的View,Text组件。这些都是固定的组件名字,他是需要查看文档,我想引入一个View,就必须知道在这个第三方库中存在View这个第三方组件,况且一...
React Native错误汇总(持续更新) 错误1 Element type is invalid…: 错误描述: Element type is invalid: expected a String(for built-in components) or a class/function(for composite components) but got:object. check the render method of ‘….’ 这个错误是很不容易发现的原因是由于ES5语法和ES6语法混...
react-native 开发中遇到的坑 1、Element type is invalid:expected a string (for built-in compoenets)or a class/function (for composite components)but got:undefined... 这个错,是说没有export出要使用的组件,可是我找了好久,没有发现到底是什么原因引起。 这个组件在 看网上说可以 import List_view from...
Although we try to make the experience of using React Native Elements hassle-free, time to time you may encounter some problems along the way. On this page you can find solutions to commonly encountered issues. Invariant Violation: Element type is invalid ...
React Native问题集合 1.Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and...
ReactNative错误总结 以下错误的环境是: React:15.4.2 ReactNative:0.40.0 1 Element type is invalid 错误信息.png ES5的导出导入语法: module.exports=Page2;varNaviBar=require('./NaviBar'); ES6的导入导出语法: exportdefaultclassPage2extendsComponentimportNaviBarfrom'./NaviBar';...
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Invariant Violation: Element type is invalid: expected a string( for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in.#16332
Here is my code: `import React, { Component } from "react"; import { StyleSheet, Text, View, TextInput, Image, BackgroundImage } from "react-native"; import Forecast from "./Forecast"; import OpenWeatherMap from "./open_weather_map"; ...
一、onLayout function 当组件挂载或者变化的时候调用，内部有nativeEvent.layout属性，包含四个参数： ...