在Android中执行不带webview的javascript [英] Execute javascript without webview in Android

问题描述

我正在尝试在我的Android应用中执行JS功能。
该函数位于网站上的.js文件中。

I'm trying to execute a JS fonction in my Android app. The function is in a .js file on a website.

我没有使用webview，我想执行JS函数，因为它发送请求我想要。

I'm not using webview, I want to execute the JS function because it sends the request i want.

在我的浏览器的控制台中，我只需要 question.vote（0）; ，我怎么能在我的应用程序中执行此操作？

In the Console in my browser i just have to do question.vote(0);, how can I do it in my app ?

推荐答案

更新2018年： AndroidJSCore已被<取代a href =https://github.com/LiquidPlayer/LiquidCore =nofollow noreferrer> LiquidCore ，它基于V8。它不仅包括V8引擎，而且所有Node.js都可用。

UPDATE 2018: AndroidJSCore has been superseded by LiquidCore, which is based on V8. Not only does it include the V8 engine, but all of Node.js is available as well.

您可以在没有WebView的情况下执行JavaScript。您可以使用 AndroidJSCore 。下面是一个快速示例，说明如何执行此操作：

You can execute JavaScript without a WebView. You can use AndroidJSCore. Here is a quick example how you might do it:

HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http://your_website_here/file.js");
HttpResponse response = client.execute(request);
String js = EntityUtils.toString(response.getEntity());

JSContext context = new JSContext();
context.evaluateScript(js);
context.evaluateScript("question.vote(0);");

但是，这很可能不适用于WebView，因为我认为你不仅仅是依赖JavaScript，但AJAX，它不是纯JavaScript的一部分。它需要一个浏览器实现。

However, this most likely won't work outside of a WebView, because I presume you are not only relying on JavaScript, but AJAX, which is not part of pure JavaScript. It requires a browser implementation.

您是否有理由不使用隐藏的WebView并只是注入您的代码？

Is there a reason you don't use a hidden WebView and simply inject your code?

// Create a WebView and load a page that includes your JS file
webView.evaluateJavascript("question.vote(0);", null);     

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