Android Webview - Detect Whether A Js Function Is Defined

I'm writing an HTML/JS application that runs under a WebView on Android. Under certain circumstances the page containing the application may not be loaded, or another page might in

Solution 1:

@JavascriptInterfacepublicvoidonLoaded(String result) {
    if (result.equals("function")) {
        // defined
    } else {
       // not defined
    }
}

privatevoidcheckJSFunction() {
    loadUrl("javascript:yourJSInterfaceName.onLoaded(typeof yourFunctionName)");
}

update: this code will check the JS function define by "typeof" and return its result to java through javascript interface "onLoaded".

Solution 2:

I think you can do it, Please look at PhoneGap project, you will find your answer.

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