i am using the below XHR in balckberry.I am getting alert message in callback function.Response returns as [object object].i want to call xml file.please help me to parse it out

sample xml:

?

?

1.jpg

video
1.35
?

Code:

function doXHR() {

alert(’in’);

var testURL = “http://www.google.com”;

var postDATA = null;

var callback = function(response) {

alert(’call back’);
// Do stuff with the response data…

alert(response);

};

navigator.network.XHR(testURL, postDATA, callback);

}

Data passed to the callback function, that is data returned by the http-get to the URL MUST be a JSON. Something like this would work fine:

var win = function(data) {
alert(data.text);
};
navigator.network.XHR(’http://localhost:4023/Service1.asmx/HelloWorld’, null, win);

Where the data returned by the “Service1.asmx/HelloWorld” service is something like:
“{text: ‘Hello world’}”

Hope this helps!

I set up a simple test web service that has a HelloWorld method.

Then I set up a test function that is called on a button click:

function test() {

alert(’before call’);

navigator.network.XHR(’http://localhost:4023/Service1.asmx/HelloWorld’, null, win);

alert(’after call’);

alert(’before function’);

var win = function(data) {
alert(data);
};

alert(’after function’);
}

I then added an alert in the Network.prototype.XHR function (in phonegap.js) just to make sure it was being called — and it is in fact being called on my button click.

The problem is that the success handler is not getting called. All my alerts before and after each step do come up.

Is there a later release of phonegap that I should be using?

Any insight into my problem would be greatly appreciated.

Thanks…Brian

Sure is! The solution is in the PhoneGap repository on GitHub. What I did is I implemented an HTTP request/callback mechanism, very similar to a classic XMLHttpRequest, in the BlackBerry native code. It’s wrapped up in the NetworkCommand implementation of the BlackBerry PhoneGap source (see http://github.com/phonegap/phonegap/blob/master/blackberry/src/com/nitobi/phonegap/api/impl/NetworkCommand.java).

Here’s the JavaScript API implementation for it, taken from the BlackBerry phonegap.js file at line 1073:

// Temporary implementation of XHR. Soon-to-be modeled as the w3c implementation.
Network.prototype.XHR = function(URL, POSTdata, successCallback) {
var req = URL;
if (POSTdata != null) {
req += “|” + POSTdata;
}
this.XHR_success = successCallback;
PhoneGap.exec(”network”,["xhr",req]);
};

So, Brian, you would call something like this from your code:
var win = function(data) {alert(data);};
navigator.network.XHR(’http://www.myservice.com/?param1=value1′,null,win);

The second argument to the XHR function is text data to send as POST data in the request. Eventually, I am going to re-wrap this to mimic, as close as I can, the ‘usual’ XHR implementation that we’re all used to.

Hope that helps!
Fil