Hello there,
I'm trying to send my app's data to a web-server.
Therefore I'd like to use Ajax.
My simplest approach so far:
- Copy the helloworld-example
- Add javascript to make an xhr-call to a .php that simply returns a number and alerts me when it's done
When I open the page on my pc it works correctly.
But when I try on an android device (3 different devices so far)
the request always has state: 1 and status: 0.
I can open the .php directly within the app and it works as it should,
and I can open other websites that call the same .php asynchronously.
I simply can't do it from the app itself.
Please help me,
Best regards
XmlHttpRequest not working
Re: XmlHttpRequest not working
Hi!
You're probably retrieving a URL over HTTP, while our service is based on HTTPS, hence you'll get a cross-protocol violation error.
(we run HTTPS between Workbench and Viewer, to conform with industry needs)
This means you may either want to (1) change to a resource starting with https:// like in this example:
or (2): use the Cordova HTTP plugin, which allows you to natively retrieve this resource. The code is a bit different than the normal HTTP call, in order to invoke the plugin functionality:
And yes, in order to check what's coming in, you'd might want to also see if it's actually a JSON file (more advanced checks needed in some cases):
You're probably retrieving a URL over HTTP, while our service is based on HTTPS, hence you'll get a cross-protocol violation error.
(we run HTTPS between Workbench and Viewer, to conform with industry needs)
This means you may either want to (1) change to a resource starting with https:// like in this example:
Code: Select all
var flickerAPI = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?";
$.getJSON(flickerAPI, {
tags: "mount rainier",
tagmode: "any",
format: "json"
})
.done(function(data) {
$.each(data.items, function(i, item) {
$("<img>").attr("src", item.media.m).appendTo("#images");
if (i === 3) {return false;} //only the first three items
});
});
or (2): use the Cordova HTTP plugin, which allows you to natively retrieve this resource. The code is a bit different than the normal HTTP call, in order to invoke the plugin functionality:
Code: Select all
cordovaHTTP.get(
"http://somewhere.com/some-path/some-doc",
function(response) // on success
{
app.status( "HTTP success " + response.status);
app.onMessageArrived(JSON.parse(response.data));
},
function(response) // on error
{
console.log(JSON.stringify(response));
});
And yes, in order to check what's coming in, you'd might want to also see if it's actually a JSON file (more advanced checks needed in some cases):
Code: Select all
var json;
try
{ // is the resource well-formed?
json = JSON.parse(client.responseText);
}
catch (ex)
{
// Invalid JSON, notify of the failure...
alert(‘Could not parse json, aborting..’);
}
if (json)
{
// Ok, it seems to be valid JSON, proceed here with the code
}
-
- Posts: 2
- Joined: 16:34, 26 Jan 2016
Re: XmlHttpRequest not working
Hello alex,
thanks a lot, now it works like a charm.
You really made my day.
thanks a lot, now it works like a charm.
You really made my day.
Re: XmlHttpRequest not working
Glad to help, keep us posted
axl
axl
Return to “Questions and answers”
Who is online
Users browsing this forum: No registered users and 14 guests