JavaScript alert not working in Android WebView

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As others indicated, setting the WebChromeClient is needed to get alert() to work. It’s sufficient to just set the default WebChromeClient():

mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebChromeClient(new WebChromeClient());

Thanks for all the comments below. Including John Smith’s who indicated that you needed to enable JavaScript.

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