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POPassing JavaScript anonymous function as parameter to WebView
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  1. POPassing JavaScript anonymous function as parameter to WebView
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    copied!<p>I have a Native application, which has a WebView in it. I add a class to the WebView to be able to call it from JavaScript like so:</p> <pre><code>webView.addJavascriptInterface(new JavascriptInterface(webView, handler), "Android.JSI"); </code></pre> <p>I then call the JavaScriptInterface class from JavaScript. My HTML/JavaScript looks like:</p> <pre><code>&lt;input type="button" value="Sleep Alert" onclick="sleepAlert(sleepAlertCallbackSuccess, sleepAlertCallbackFail, 'Hi Sleep Alert');" /&gt; function sleepAlert(callBackSuccess, callBackFailure, message) { window.Android.JSI.sleepAlert(callBackSuccess.name, callBackFailure.name, message); } function sleepAlertCallbackSuccess(message) { alert("success: " + message); } function sleepAlertCallbackFail(message) { alert("fail: " + message); } </code></pre> <p>I then callback into the JavaScript like so:</p> <pre><code>js = "javascript:" + callbackSuccess + "('" + message + "')"; webView.loadUrl(js); </code></pre> <p>This works, but I am kind of stuck on if the user wants to pass in an anonymous function instead of a normal named function. I.E.</p> <pre><code>&lt;input type="button" value="Anonymous call back" onclick="sleepAlert(function(message) { alert(message); }, sleepAlertCallbackFail, 'anonymous sleep alert');" /&gt; </code></pre> <p>When I pass this in to my Java class</p> <pre><code>public void sleepAlert(final String callbackSuccess, String callbackFail, final String message) </code></pre> <p>It says callbackSuccess is undefined.</p> <p>Any ideas on the proper way to do this as I feel im getting lost going the wrong way?</p>
 

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