Android平台的JavaScript引擎:DuktapeJava

jopen 9年前

DuktapeJava 是针对 Android 平台封装的 Duktape  JavaScript 引擎;实现javascript 和 java的无缝调用。

初始化DuktapeEngnine


@Override   protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);      duktapeEngine = new DuktapeEngine();      duktapeEngine.init();      duktapeEngine.register("activity",this);      duktapeEngine.execute(AssetScript.toScript(getBaseContext(), "duk.js"));      duktapeEngine.callJs("activityListener", "onCreate", savedInstanceState);  }     @Override   protected void onDestroy() {       if (duktapeEngine != null) {          duktapeEngine.destory();          duktapeEngine = null;      } super.onDestroy();  }


duk.js javascript 代码示例


importClass("com.furture.react.R")  importClass("android.view.View.OnClickListener")  importClass("android.widget.Toast")  importClass("java.lang.Runnable")    var activityListener = {};  activityListener.onCreate = function(){          print("activity onCreate onJavaScript");          activity.setContentView(R.layout.activity_duk)          button1 = activity.findViewById(R.id.button1);          button1.setOnClickListener(new OnClickListener(function(){              Toast.makeText(activity, "Button1 Clicked", Toast.LENGTH_SHORT).show();               var intent = new Intent(activity, "com.furture.react.activity.DetailActivity");              activity.startActivity(intent);          }));        button2 = activity.findViewById(R.id.button2);      button2.setOnClickListener(new OnClickListener({          onClick:function(){              Toast.makeText(activity, "Button2 Clicked", Toast.LENGTH_SHORT).show();          }      }));  }    activityListener.onStart = function(){      print("activity onStart");  }    activityListener.onResume = function(){      print("activity onResume");  }      activityListener.onPause = function(){       print("activity onPause");  }    activityListener.onStop = function(){       print("activity onStop");  }    activityListener.finish = function(){       print("activity finish" + num);  }


Java 和 Javascript 的无缝调用

javascript 调用java方法示例:

importClass("android.widget.Toast")     Toast.makeText(activity, "Javascript toast", Toast.LENGTH_SHORT).show();

Java 还可以在 JavaScript 的对象方法示例:

importClass("com.efurture.react.DataUtils")    var data = {};   data.count =  10;   data.getItem = function(var index){         return "Javascript Data " + index;  }     DataUtils.showData(data);

DataUtils.Java 代码示例:

public class DataUtils{   public static void showData(JSRef data){           DuktapeEngine  engine =  data.getEngine();           int count = (Integer)engine.callJsRef(data, "count");            for(int i=0; i<count; i++){               Log.d("DataUtils", " Get JavaScript Data Success :  " + engine.callJsRef(data, "getItem", i));           }        }    }

项目github地址: https://github.com/gubaojian/DuktapeJava