如何在Android应用程序的WebView中看到Javascript错误? [英] How can I see Javascript errors in WebView in an Android app?

问题描述

我正在尝试在应用程序的WebView中运行javascript.我正在Nexus 7上进行开发.

I'm trying to run javascript in WebView in an app. I'm developing on Nexus 7.

html/javascript在Chromium上可以正常工作，但某些操作未在平板电脑上进行.有没有办法查看平板电脑上的任何JavaScript本身是否失败?一种控制台视图吗?

The html / javascript works fine on Chromium, but certain actions aren't happening on the tablet. Is there a way of seeing if any of the javascript itself is failing on the tablet? A kind of console view?

推荐答案

您实际上可以从WebView接收控制台消息，从而可以捕获其引发的错误.

You can actually receive the console messages from a WebView, which would allow you to catch the errors that it throws.

要这样做:

1. 在WebView上启用JavaScript
2. 设置 WebChromeClient
3. 覆盖 onConsoleMessage

示例:

    final WebView webView = (WebView) findViewById(R.id.webview_terms_conditions);

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    webView.setWebChromeClient(new WebChromeClient() {
        @Override
        public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
            Log.d("MyApplication", consoleMessage.message() + " -- From line "
                    + consoleMessage.lineNumber() + " of "
                    + consoleMessage.sourceId());
            return super.onConsoleMessage(consoleMessage);
        }
    });

    webView.loadUrl(getString(R.string.url_terms_conditions));

类似于此处，尽管该文档不是完成并且使用了不推荐使用的方法.

Similar to what it says here, though that doc isn't complete and it uses a deprecated method.

在Android KitKat上运行时，您还可以启用远程调试！

When running on Android KitKat, you can also enable remote debugging!

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