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POAndroid Calling JavaScript functions in WebView
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I am trying to call some <code>javascript</code> functions sitting in an <code>html</code> page running inside an <code>android webview</code>. Pretty simple what the code tries to do below - from the android app, call a <code>javascript</code> function with a test message, which inturn calls a java function back in the android app that displays test message via toast. The <code>javascript</code> function looks like: <pre><code>function testEcho(message){ window.JSInterface.doEchoTest(message); } </code></pre> From the WebView, I have tried calling the <code>javascript</code> the following ways with no luck: <pre><code>myWebView.loadUrl("javascript:testEcho(Hello World!)"); mWebView.loadUrl("javascript:(function () { " + "testEcho(Hello World!);" + "})()"); </code></pre> I did enable <code>javascript</code> on the <code>WebView</code> <pre><code>myWebView.getSettings().setJavaScriptEnabled(true); // register class containing methods to be exposed to JavaScript myWebView.addJavascriptInterface(myJSInterface, "JSInterface"); </code></pre> And heres the <code>Java</code> Class <pre><code>public class JSInterface{ private WebView mAppView; public JSInterface (WebView appView) { this.mAppView = appView; } public void doEchoTest(String echo){ Toast toast = Toast.makeText(mAppView.getContext(), echo, Toast.LENGTH_SHORT); toast.show(); } } </code></pre> I've spent a lot of time googling around to see what I may be doing wrong. All examples I have found use this approach. Does anyone see something wrong here? Edit: There are several other external <code>javascript</code> files being referenced & used in the <code>html</code>, could they be the issue?
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<javascript><android><webview>
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Android Calling JavaScript functions in WebView
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1. COThe code you try to use misses quotes on the javascript side.
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 USPaul de Vrieze
2. COPlease note that since Android 4.2 you're required to use the `@JavascriptInterface` decorator on the Java methods that you want to make available to the WebView through the JavaScript Interface.
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 USFred

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