如何从Java调用code javascript函数 [英] How to call javascript function from java code

问题描述

我试图调用从Java类的JavaScript函数，但我得到这些错误：

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

在这里，code：

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();
                }

我试图究竟做的是，当支付完毕后，此函数被调用其他方法在这个类来获得支付的结果，它是印刷在主HT​​ML框。

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.

推荐答案

您可以做这样的事情。

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

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