Question

我已经为v1.0.0实现了Phonegap插件。请查看我的HTML代码

/**** HTML FILE ****/
<!DOCTYPE html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-  scale=1.0, user-scalable=no;" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<script type="text/javascript" charset="utf-8" src="phonegap-1.0.0.js"></script>
<script type="text/javascript" charset="utf-8" src="system.js"></script>
<script type="text/javascript">

var uname = "User1";                    //------------- 2

var System = function() {};

System.prototype.func = function(funcname,funcdata) {

//alert("In the list function");

return PhoneGap.exec(
      null,                 //Success callback from the plugin
      null,                 //Error callback from the plugin
      'SystemPlugin',       //Tell PhoneGap to run     "DirectoryListingPlugin" Plugin
      funcname,             //Tell plugin, which action we want to perform
      funcdata);            //Passing list of args to the plugin
};

PhoneGap.addConstructor(

    function() {

       PhoneGap.addPlugin("system", new System());

    }

);

var _anomFunkMap = {};
var _anomFunkMapNextId = 0; 

function anomToNameFunk(fun)
{
    var funkId = "f" + _anomFunkMapNextId++;
    var funk = function()
    {
        fun.apply(this,arguments);
        _anomFunkMap[funkId] = null;
        delete _anomFunkMap[funkId];    
    }
    _anomFunkMap[funkId] = funk;

    return "_anomFunkMap." + funkId;
}

function GetFunctionName(fn)
{
  if (typeof fn === "function") {
    var name= fn.name;  
    if (!name) {
      var m = fn.toString().match(/^\s*function\s+([^\s\(]+)/);
      name= m && m[1];  
    }
    if (name && (window[name] === fn)) {
        return name;
    } else {
        return anomToNameFunk(fn);
    } 
  }else {
    return null;
  }
}

function post_sync_data(url, urlparam, param, requestheader, callback){

    //alert("In post_sync_data");

    if(undefined == callback){

        if(undefined == requestheader){

            var fnname = GetFunctionName(param);
            var dataArray = [fnname, fnname, url, urlparam];    

        }
        else{

            var fnname = GetFunctionName(requestheader);

            //Note : the param is optional parameter or request header
            var dataArray = [fnname, fnname, url, urlparam, param]; 

        }
    }
    else{

        var fnname = GetFunctionName(callback);
        var dataArray = [fnname, fnname, url, urlparam, param, requestheader];  

    }

    //alert("Calling plugin function post with \r\n"+dataArray);

    var r = window.plugins.system.func("post",dataArray);       
    //alert("r is :\r\n"+r);                                                        ------------- 3

    return r;       
}

function validate(){    

    //Make a webservice call for the Omnesys Token
    post_sync_data(url,urlparam,uname,postDataCB);

}

function postDataCB(token,name){

    //Here uname is undefined.
    alert("In postDataCB()\r\nuname: "+uname+"\r\nuname from C Func: "+name+"\r\n\r\ntoken: "+token);
    return;

}   

function onBodyLoad()
{       
    document.addEventListener("deviceready",onDeviceReady,false);

}

function onDeviceReady()
{
    // do your thing!
    navigator.notification.alert("PhoneGap is working")
    document.getElementById('d1').style.visibility = "visible";
}

</script>
    </head>
    <body onload="onBodyLoad()"> 
<div id="d1" style="visibility:hidden">
    <form>                                                                  <!-- 1 -->
    <button onclick="javascript:validate()">Submit</button><br />   
    </form>
</div>
    </body>
</html>

我的Phonegap插件文件。

/*** My PhoneGap Plugin.xml File ***/
<?xml version="1.0" encoding="utf-8"?>
<plugins>
<plugin name="App" value="com.phonegap.App"/>
<plugin name="Geolocation" value="com.phonegap.GeoBroker"/>
<plugin name="Device" value="com.phonegap.Device"/>
<plugin name="Accelerometer" value="com.phonegap.AccelListener"/>
<plugin name="Compass" value="com.phonegap.CompassListener"/>
<plugin name="Media" value="com.phonegap.AudioHandler"/>
<plugin name="Camera" value="com.phonegap.CameraLauncher"/>
<plugin name="Contacts" value="com.phonegap.ContactManager"/>
<plugin name="Crypto" value="com.phonegap.CryptoHandler"/>
<plugin name="File" value="com.phonegap.FileUtils"/>
<plugin name="Network Status" value="com.phonegap.NetworkManager"/>
<plugin name="Notification" value="com.phonegap.Notification"/>
<plugin name="Storage" value="com.phonegap.Storage"/>
<plugin name="Temperature" value="com.phonegap.TempListener"/>
<plugin name="FileTransfer" value="com.phonegap.FileTransfer"/>
<plugin name="Capture" value="com.phonegap.Capture"/>
<plugin name="SystemPlugin" value="com.phonegap.test.SystemPlugin" />
</plugin>

我的JAVA班

/** Plugin Code **/
public class SystemPlugin extends Plugin {

@Override
public PluginResult execute(String funcname, JSONArray funcargs, String jscallbackid){

    //Get the success and failure call back functions       
    try{        
        SuccessCallBack = funcargs.getString(0);
        FailureCallBack = funcargs.getString(1);        
    }
    catch (JSONException jsonEx) {

        return null;

    }

    if(funcname.equals("post")){

        try{

            url = funcargs.getString(2);
            urlparam = funcargs.getString(3);               

        }
        catch (JSONException e) {
            SendJS = "javascript:" + FailureCallBack + "('" + e.getMessage() + "')"; 
            sendJavascript(SendJS);
            return null;
        } 

        try {
            conn = new URL(url).openConnection();
            conn.setDoOutput(true);

        } catch (MalformedURLException e) {
            SendJS = "javascript:" + FailureCallBack + "('" + e.getMessage() + "')"; 
            sendJavascript(SendJS);
            return null;
        } catch (IOException e) {
            SendJS = "javascript:" + FailureCallBack + "('" + e.getMessage() + "')"; 
            sendJavascript(SendJS);
            return null;
        }

        if(requestheader == null){

            //Default Request Property
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        }
        else{

            String Headers[] = requestheader.split("\r\n");

            for(i=0; i < Headers.length; i++){

                String hReq[] = Headers[i].split(":");

                if(hReq.length == 2){

                    conn.setRequestProperty(hReq[0], hReq[1]);                  
                }
            }
        }

        try {

            //Blank String
            String data="";

            String param[] = urlparam.split("&");

            for(i=0; i < param.length; i++){

                String keyval[] = param[i].split("=");

                if(keyval.length == 2){

                    data += URLEncoder.encode(keyval[0], "UTF-8") + "=" + URLEncoder.encode(keyval[1], "UTF-8") + "&";
                }
            }

            //remove the unwanted & at the end of the string
            data = data.substring(0,data.length()-1);  

            ro = new OutputStreamWriter(conn.getOutputStream());
            ro.write(data);

            //Close the connection
            ro.close(); 

        } catch (IOException e) {
            SendJS = "javascript:" + FailureCallBack + "('" + e.getMessage() + "')"; 
            sendJavascript(SendJS);
            return null;
        }

        try{

            rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));

            while ((line = rd.readLine()) != null)
            {
                sb.append(line);
            }

            //Close the connection
            rd.close();

        } catch (IOException e) {
            SendJS = "javascript:" + FailureCallBack + "('" + e.getMessage() + "')"; 
            sendJavascript(SendJS);
            return null;
        }

        SendJS = "javascript:" + SuccessCallBack + "('" + JSONObject.quote(sb.toString()); 

        if(jObj != null)
            SendJS += "','" +  jObj + "')";
        else if(StringParam != null)
            SendJS += "','" + StringParam + "')";
        else
            SendJS += "')";

        sendJavascript(SendJS);
        return null;        

    }   
    else{

        return null;

    }       
}
}

现在在第一个代码中你可以看到数字1 2 3 1 - 表单元素 2 - 是一个全局变量 3 - 是插件警报

现在，如果我删除1.一切正常。但如果我保留表格，全局变量就无法保持其价值。它变为undefined，警报也会提供undefined

有人可以指导我这是什么问题吗？

Answer 1

这是表单问题。表格不符合标准表格格式纠正这个问题解决了这个问题。

Phonegap插件以奇怪的方式表现

1 个答案: