【发布时间】:2017-02-13 03:47:59
【问题描述】:
我试图在 react-native 中连接 Aframe,但在模拟器中启动时出现此错误:
One of the sources for assign has an enumerable key on the prototype chain. Are you trying to assign a prototype property? We don't allow it, as this is an edge case that we do not support. This error is a performance optimization and no spec compliant.
我正在使用 Aframe 0.5.0 和 React-Native 0.41.2
错误是从 polyfills.js 的第 56 行抛出的,与 aframe-master.js:55729 的这一部分有关。
Object.assign( THREE.MTLLoader.prototype, THREE.EventDispatcher.prototype, {
有没有办法解决这个问题?我是否需要修改 aframe 以使用不同的分配,或者有什么方法可以解决这个问题?
我正在运行一个非常简单的 hello world,只是尝试加载依赖项失败了。在其他相关问题中,人们说他们已经通过使用 lodash.assign 或 Object.defineProperties 解决了这个问题——这是一个可行的解决方案吗?在此期间,我可以恢复到旧版本的 react-native,但理想情况下我希望将最新版本与 a-frame 一起使用。
https://github.com/facebook/react-native/issues/5507
https://github.com/facebook/react-native/issues/3634
** 更新 ** 好的,我尝试回滚,安装 react-native 0.36.1 并将我在 WebView 中加载的站点切换为使用 aframe 0.3.2。
我在 React 本机应用程序中的代码是这样的:
好的,我尝试回滚,使用 rninit 安装 react-native 0.36.1,并将我在 WebView 中加载的站点切换为使用 aframe 0.3.2。
我在 React 本机应用程序中的代码是这样的:
import React, { Component } from 'react';
// import ReactDOM from 'react-dom';
import {
AppRegistry,
WebView
} from 'react-native';
export default class test4 extends Component {
render() {
return (
<WebView source={{uri: 'http://[theurl]/test.html'}}/>
);
}
}
AppRegistry.registerComponent('test4', () => test4);
aframe 应用是这样的:
<!DOCTYPE html>
<html>
<head>
<title>A-Frame walkthrough (final)</title>
<script src="/aframe.js"></script>
</head>
<body>
<a-scene>
<a-assets>
<img id="circle" src="circle.png"/>
</a-assets>
<a-sky src="Ephesus4_1.jpg" rotation="0 -130 0"></a-sky>
</a-scene>
</html>
当我通过从 chrome://inspect#devices 检查 web 视图打开调试器时,我得到以下输出:
Mozilla/5.0 (Linux; Android 6.0; Android SDK built for x86_64 Build/MASTER; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36
aframe.js:54681 Recalculating device params.
aframe.js:54718 User agent: Mozilla/5.0 (Linux; Android 6.0; Android SDK built for x86_64 Build/MASTER; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36
aframe.js:54719 Pixel width: 2562
aframe.js:54720 Pixel height: 1442
aframe.js:54762 No DPDB device match.
aframe.js:54683 New device parameters:
aframe.js:54684 null
aframe.js:54692 Failed to recalculate device parameters.Dpdb.recalculateDeviceParams_ @ aframe.js:54692
aframe.js:54654 Fetching DPDB...
aframe.js:53106 Using fallback Android device measurements.
aframe.js:56388 Failed to load viewer profile: TypeError: Cannot read property 'getItem' of null
at Emitter.ViewerSelector (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:56386:36)
at VRDisplay.CardboardVRDisplay (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:52607:26)
at WebVRPolyfill.populateDevices (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:56694:17)
at WebVRPolyfill.getVRDisplays (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:56743:8)
at new THREE.VRControls (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:66848:13)
at Object.119.../lib/three (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:66227:16)
at s (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:1:620)
at http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:1:671
at Object.122../bind (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:66358:25)
at s (http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/aframe.js:1:620)ViewerSelector @ aframe.js:56388
aframe.js:53096 Uncaught TypeError: Cannot read property 'distortionCoefficients' of undefined
aframe.js:54662 Successfully loaded online DPDB.
aframe.js:54681 Recalculating device params.
aframe.js:54718 User agent: Mozilla/5.0 (Linux; Android 6.0; Android SDK built for x86_64 Build/MASTER; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36
aframe.js:54719 Pixel width: 2562
aframe.js:54720 Pixel height: 1442
aframe.js:54762 No DPDB device match.
aframe.js:54683 New device parameters:
aframe.js:54684 null
aframe.js:54692 Failed to recalculate device parameters.Dpdb.recalculateDeviceParams_ @ aframe.js:54692
http://ec2-52-62-186-186.ap-southeast-2.compute.amazonaws.com:8080/favicon.ico Failed to load resource: the server responded with a status of 404 (Not Found)
任何建议将不胜感激!
我也在 android 模拟器本身中得到了这个:
com.facebook.react.common.JavascriptException:{"stack":"错误:无法在 'WorkerGlobalScope' 上执行 'importScripts':http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=false&minify=false' 处的脚本无法加载。\n 在 executeApplicationScript (@987654324 @)\n 在消息时 (http://localhost:8081/debuggerWorker.js:38.5)"}
即使我切换到在 web 视图中加载的非框架网站,我也会遇到同样的错误。
【问题讨论】:
-
嗨 Toby,你能发布你正在使用的 reactjs 和 aframe 的版本吗?
-
是的 Aframe 0.5.0 和 React-native 0.41.2,已添加到问题中
-
我成功的部署使用了 aframe 0.3.2 和 React-native 0.36.1。我建议你降级进行测试。同样根据您的研究,这个问题似乎更多地与 react-native 端相关。您是否尝试过在您的应用中加载原生 webview 而不是 react ?
-
您好托尼,很好的故障排除。您是否在模拟器上测试过本机 webview?在真机上怎么样?
-
尚未在真实设备上进行测试,今天将尝试,但我使用的是本机 WebView - 我已从 react 本机应用程序本身中删除了对 aframe 的所有引用。如果您有时间,是否愿意组织一次聊天并就您的解决方案如何发挥作用进行思考?
标签: reactjs react-native aframe