android 插件开发，插件类 打开 activity ，然后接收 activity 返回值 onActivityResult

也是郁闷了好些天才搞定

场景：如题，activity （页面）操作后返回数据到，插件类里面。
不说了，直接上代码：
插件类：

package com.example.chajian;  

import android.content.Intent;  
import android.util.Log;  

import org.json.JSONArray;  

import io.dcloud.common.DHInterface.IApp;  
import io.dcloud.common.DHInterface.ISysEventListener;  
import io.dcloud.common.DHInterface.IWebview;  
import io.dcloud.common.DHInterface.StandardFeature;  
import io.dcloud.common.util.JSUtil;  

public class Ceshi extends StandardFeature {  

    public void Test(IWebview pWebview, JSONArray array) {  

        final IWebview iWebview = pWebview;  
        final String CallBackID = array.optString(0);  
        final JSONArray newArray = new JSONArray();  

        newArray.put(array.optString(1));  
        newArray.put(array.optString(2));  
        newArray.put(array.optString(3));  
        newArray.put(array.optString(4));  

         //添加监听  
        final IApp _app = pWebview.obtainFrameView().obtainApp();  
        _app.registerSysEventListener(new ISysEventListener() {  
            @Override  
            public boolean onExecute(SysEventType pEventType, Object pArgs) {  

                Object[] _args = (Object[]) pArgs;  
                int requestCode = (Integer) _args[0];  
                int resultCode = (Integer) _args[1];  

                Intent data = (Intent) _args[2];  

                //[Ljava.lang.Object;@e89a7c8  
                Log.d("aaa", "onExecute: _args " + _args);  
                //1  
                Log.d("aaa", "onExecute: requestCode " + requestCode);  
                //-1  
                Log.d("aaa", "onExecute: resultCode " + resultCode);  
                //Intent { (has extras) }  
                Log.d("aaa", "onExecute: data " + data);  

                if (pEventType == SysEventType.onActivityResult) {  
                    //用完给取消注册监听  
                    _app.unregisterSysEventListener(this, SysEventType.onActivityResult);  

                    //判断请求码  
                    if (requestCode == 1) {  
                        //获取返回值  
                        String returnData = data.getStringExtra("return_data");  
                        //执行 js 回调  
                        JSUtil.execCallback(iWebview, CallBackID, returnData, JSUtil.OK, false);  
                        Log.d("aaa", "返回的数据为：" + returnData);  
                    }  
                }  
                return false;  
            }  
        }, SysEventType.onActivityResult);  

        //打开 activity  
        Intent openItent = new Intent(pWebview.getActivity(), Open.class);  
//        Intent openItent = new Intent(pWebview.getContext(),Open.class);  
        pWebview.getActivity().startActivityForResult(openItent, 1);  
    }  

}  

activity 类：

package com.example.chajian;  

import android.content.Intent;  
import android.os.Bundle;  
import android.support.v7.app.AppCompatActivity;  
import android.util.Log;  
import android.view.View;  
import android.widget.Button;  

public class Open extends AppCompatActivity {  

    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.open_activity);  

        Button open = findViewById(R.id.open);  

        open.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View view) {  
                Log.d("aaa", "Open.onCreate : open");  

                Intent intent = new Intent();  
                intent.putExtra("return_data","我去它妹的！");  
                setResult(RESULT_OK,intent);  

                finish();  
            }  
        });  
    }  

}  

代码并不复杂，一行一行的看，很好理解，还有注释。
逻辑是，插件类设置事件监听-打开 activity-activity 设置返回值后 finish() （关闭）-插件类监听到返回值处理执行 js 回调。