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How to call javascript function from java code

I'm trying to call a javascript function from a java class, but I get these errors:

-Could not find method sun.misc.Service.installedProviders, referenced from method javax.script.ScriptEngineManager.initEngines

-Could not find method sun.misc.Service.providers, referenced from method javax.script.ScriptEngineManager.initEngines

-Could not find method sun.misc.Service.installedProviders, referenced from method javax.script.ScriptEngineManager.initEngines

-java.lang.VerifyError: javax.script.ScriptEngineManager


Here the code:

public void sendResult(){
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");

String script = "function send() {"+"var id_result = window.MyPGP.getResult();"+
"document.getElementById('id_result').value = id_result;"+"console.log("change the box value");";

try {
engine.eval(script);

Invocable invocableEngine = (Invocable) engine;

invocableEngine.invokeFunction("send");


} catch (ScriptException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}


What I'm trying exactly to do is that when the payment is finished, this function is called in other methods in this class to get the result of the payment and it is printed in a box in the main html.

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3 Answers
3

ScriptEngine engine = manager.getEngineByName("JavaScript");


Does this work?

You can do something like this

super.loadUrl("file:///android_asset/www/index.html", 20000);
super.loadUrl("javascript: { var pageFlag = '" + flag + "';}"); // Your Javascript function here


use this code

import javax.script.*;

public class InvokeScriptFunction {
public static void main(String args) throws Exception {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("JavaScript");

// JavaScript code in a String
String script = "function hello(name) { print('Hello, ' + name); }";
// evaluate script
engine.eval(script);

// javax.script.Invocable is an optional interface.
// Check whether your script engine implements or not!
// Note that the JavaScript engine implements Invocable interface.
Invocable inv = (Invocable) engine;

// invoke the global function named "hello"
inv.invokeFunction("hello", "Scripting!!" );
}
}


good luck

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