[AC-1979] Problems, retrieve data WebService HTTPClient within callback function, asynchronous

GitHub Issue	n/a
Type	Bug
Priority	n/a
Status	Closed
Resolution	Cannot Reproduce
Resolution Date	2013-03-14T16:47:03.000+0000
Affected Version/s	n/a
Fix Version/s	n/a
Components	Appcelerator Modules, Documentation, Studio, Titanium SDK & CLI
Labels	android
Reporter	diego
Assignee	Shak Hossain
Created	2013-03-11T02:33:42.000+0000
Updated	2016-03-08T07:40:55.000+0000

Description

please, I have problems using the callback function when I'm waiting data from a webservice, I need to split the code to stay in separate classes or applying a standard structure commonjs, this is my code but i cant catch whats wrong, i cant see my alerts messages. File: MisWebServices.js

exports.consumirWS = function(callback) {	
    var client = Ti.Network.createHTTPClient({
        onload : function(e) { 
            if (callback) { 
                callback(this.responseText);//I also did the test here with this.responseXML
            }
        },

        // function called when an error occurs, including a timeout
        onerror : function(e) {
            Ti.API.debug(e.error);
            alert('error');
        },
        timeout : 5000 // in milliseconds
    });

    client.open("GET", "http://www.miurl.com");
    client.send();
}

Now, my file app.js

WS = require('/MisWebServices');

function callback(datos){
    try { 
        alert('b'+JSON.stringify(datos)); // Displays information in text format

        //If I use the JSON.parse also not work
        //var datosJSON = JSON.parse(datos); 

        var items = datos.documentElement.getElementsByTagName("element");
        var arrData = [];	

        for (var i=0; i < items.length; i++) {
            arrData.push({
                Country: items.item(i).getElementsByTagName("Country").item(0).text,
                Location: items.item(i).getElementsByTagName("Location").item(0).text
            });
        }

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

            //now here, i cant see de alert messages :(
            alert('country:'+arrData[i].Country);
            alert('state:'  +arrData[i].Location);

        }
    } catch(erro) {
        var items = {error : 'Invalid JSON data'};
    }
}

//Call the service as follows
WS.consumirWS(callback);

Comments

Davide Cassenti 2013-03-14

I cannot reproduce the problem; I tried the code you provided, with the same URL, and I get an error (in fact, the page gives back a 404). If I use a valid URL, everything works fine, and I see the result of the call. Thanks

Mostafizur Rahman 2013-12-31

I tested this issue the test code below. I can’t reproduce this issue in latest Ti SDK. It’s working perfect as we expected. Please test this code in latest SDK and let me know if you have any issue. I hope it solve your problem.

Test Environment

MAC OS X 10.8.5, Titanium SDK 3.2.0 GA IOS Simulator 7.0.3 Android 2.3.3 Ti CLI 3.2.0

Test Code

   var win = Titanium.UI.createWindow({
   	backgroundColor : '#fff'
   });
    
   // Create table
   var table = Ti.UI.createTableView({
   	
   });
   win.add(table);
    
   // Create http client
    
   c = Titanium.Network.createHTTPClient();
   c.setTimeout(10000);
   	
   c.onload = function() {
   	var xml = this.responseXML;
   	// the blog's title is in a node named "channel"
   	//var channel = xml.documentElement.getElementsByTagName("channel");
    
   	// begin looping through blog posts
   	var data = [];
   	// blog posts are in nodes named "item"
   	var items = xml.documentElement.getElementsByTagName("item");
   	for (var i=0;i<items.length;i++) {
   		data.push({
   			postTitle: items.item(i).getElementsByTagName("title").item(0).text,
   			postLink: items.item(i).getElementsByTagName("link").item(0).text
   		});
   	}
   	
   	Ti.API.info('IN ONLOAD ');
   for (var i = 0; i <= data.length; i++) {
    
             alert('Title:'+data[i].postTitle);
             alert('link:'  +data[i].postLink);
            
   };
   }
    
   c.onerror = function(e) {
   	Ti.API.info('XHR Error ' + e.error);
   };
    
   // open the client
   c.open('GET', 'http://apod.nasa.gov/apod.rss');
   // send the data
   c.send();
   win.open();

Thanks

JSON Source