sendJavascript功能不是在科尔多瓦插件销售人员定义的错误

问题描述

我想创造一个我想从我的Java code将数据传输回JS一个销售人员插件（这基本上是一个后台进程）
但是，它总是给我错误行this.sendJavascript（函数名）

I am trying to create a salesforce plugin in which i want to push data back to JS from my java code (which is basically a background process)But its always giving me error for line this.sendJavascript(function name)

以下是插件code -

following is plugin code -

package com.salesforce.androidsdk.phonegap;
import org.apache.cordova.api.CallbackContext;
import org.apache.cordova.api.CordovaPlugin;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.content.Intent;
import android.util.Log;
/**
 * This class echoes a string called from JavaScript.
 */
public class Echo extends CordovaPlugin {
    private static final String TAG = "CordovaPlugin";

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
        Log.i(TAG,"inside execute method--->>>" + action + args + callbackContext);
        if (action.trim().equalsIgnoreCase("echo")) {
            Log.i(TAG,"args.getString(0)--->>>" + args.getString(0));
            String message = args.getString(0);
            // Initialise the service variables and start it it up
            Context thiscontext = this.cordova.getActivity().getApplicationContext();
            Intent callBackgroundService = new Intent(thiscontext, CallBackgroundService.class);
            callBackgroundService.putExtra("loadinterval", 800); // Set LED flash interval
            thiscontext.startService(callBackgroundService);
            this.echo(message, callbackContext);

            sendValue("Kaushik", "Ray");
            return true;
        }
        return false;
    }

    private void echo(String message, CallbackContext callbackContext) {
        if (message != null && message.length() > 0) {
            callbackContext.success(message);
        } else {
            callbackContext.error("Expected one non-empty string argument.");
        }
    }

    public void sendValue(String value1, String value2) {
         JSONObject data = new JSONObject();
        try {
            data.put("value1", "Kaushik");
            data.put("value2", "Ray");
        } catch (JSONException e) {
            Log.e("CommTest", e.getMessage());
        }
         String js = String.format(
                "window.plugins.commtest.updateValues('%s');",
                data.toString());
    error line ------->>>  this.sendJavascript(js);

    }
}

我已标记的误差线是在末尾。请帮我解决这个

I have marked the error line which is at the end. Please help me resolve this

在此先感谢，
考希克

Thanks in Advance,Kaushik

推荐答案

sendJavascript（）在两个DroidGap.java和CordovaWebView.java功能，但价值这个在当前文件是回声的实例。行 this.sendJavascript（）失败，因为期待称为是回声的成员，或从继承的一个类的公共/受保护的成员函数，在此案例CordovaPlugin。

sendJavascript() is a function in both DroidGap.java and CordovaWebView.java, but the value of this in your current file is your instance of Echo. The line this.sendJavascript() fails because is expecting the function called to be a member of Echo or a public/protected member of one of the classes it inherited from, in this case CordovaPlugin.

有在CordovaPlugin.java web视图公共变量，命名它是为您的项目CordovaWebView。如果您从 this.sendJavascript改变你的那一行（JS）到 webView.sendJavascript（JS），它应该修复您的错误。

There is a public variable in CordovaPlugin.java, named webView which is the CordovaWebView for your project. If you change your offending line from this.sendJavascript(js) to webView.sendJavascript(js), it should fix your error.

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