机器人犀牛

Question

我正试图在这之后的安卓项目中使用犀牛。我在js.jar中添加了Rhino。

这是我的MainActivity

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ...

        Context rhino = Context.enter();
//        try{                     // I commented it to catch the error
            rhino.setLanguageVersion(Context.VERSION_1_2);
            Scriptable scope = rhino.initStandardObjects();
            Object result=rhino.evaluateString(scope, 
                           "obj={a:1,b:['x','y']}", "MySource", 1, 
                            null);       // This line cannot be compiled

            Scriptable obj = (Scriptable)scope.get("obj",scope);
            Log.i("JS","obj " + (obj == result ? "==" : "!=") +" result");

            Log.i("js","obj.a == " + obj.get("a", obj));


            Scriptable b = (Scriptable) obj.get("b", obj);
//        }catch (Exception e){
//            Log.e("js","Exception.....");
//        }
     }
}

Logcat:

FATAL EXCEPTION: main
    Process: com.behy.jsinand, PID: 7027
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.behy.jsinand/com.behy.jsinand.MainActivity}: java.lang.UnsupportedOperationException: can't load this type of class file
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
    at android.app.ActivityThread.access$800(ActivityThread.java:151)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5254)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
    Caused by: java.lang.UnsupportedOperationException: can't load this type of class file
    at java.lang.ClassLoader.defineClass(ClassLoader.java:300)
    at org.mozilla.javascript.DefiningClassLoader.defineClass(DefiningClassLoader.java:27)
    at org.mozilla.javascript.optimizer.Codegen.defineClass(Codegen.java:130)
    at org.mozilla.javascript.optimizer.Codegen.createScriptObject(Codegen.java:85)
    at org.mozilla.javascript.Context.compileImpl(Context.java:2394)
    at org.mozilla.javascript.Context.compileString(Context.java:1335)
    at org.mozilla.javascript.Context.compileString(Context.java:1324)
    at org.mozilla.javascript.Context.evaluateString(Context.java:1076)
    at com.behy.jsinand.MainActivity.onCreate(MainActivity.java:41)
    at android.app.Activity.performCreate(Activity.java:5990)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
    at android.app.ActivityThread.access$800(ActivityThread.java:151) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:135) 
    at android.app.ActivityThread.main(ActivityThread.java:5254) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 

它是完全基于样例项目，但我不知道为什么它不编译。

Answer 1

我把它修好了(发邮件可能对你有帮助)

问题中所链接的项目不是针对Android应用程序的。

要在android中编译它，应该将optimizationLevel的Context设置为-1：rhino.setOptimizationLevel(-1)；

而且起作用了！

Answer 2

我编写了一个库，允许在Android上使用Rhino，没有优化级别的限制。

https://github.com/F43nd1r/rhino-android