Following is the technologies that I have used:
HTML 5, JS, JQuery, AJAX, RESTFul POST web service, IOS
Problem Statement:
I have created an iOS native application and placed certain HTML and JS files in my application. On starting the application on simulator I open my HTML file in web view and on click of a button I hit a web service that is deployed on my local windows machine.
However, I am not able to hit my web service. I am able to perform the same activity from Android emulator and from my local client test program.
Request you to please help me with this issue.
Below is the AJAX code that hits the service:
var jsonObject = new Object();
jsonObject.passengers= 4;
jsonObject.country= "India";
jsonObject.state= "Maharashtra";
var url = "http://<HOST>:<POST>/JerseyTest/services/emanual/demo";
$.ajax({
url: url,
type: "post",
data: inputJsonString,
success: function(data, status){
alert("success");
alert("In Success: " + JSON.stringify(status));
alert("In Success: " + JSON.stringify(data));
//$("#result").html('Submitted successfully');
},
error:function(data, status){
alert("failure");
alert("In Error: " + JSON.stringify(status));
alert("In Error: " + JSON.stringify(data));
//$("#result").html('There is error while submit');
}
});
This code works on from standalone HTML file, from Android Emulator.
Is there any extra configuration that I need to do on iOS machine or for simulator?
Any help is highly appreciated.
Regards,
Vineet
Make sure jQuery is loaded by putting an alert("jQuery is loaded") inside
$(function(){
alert("jQuery is loaded")
});
If jQuery isn't loaded, check in XCode if the jQuery source file is inside the Compile Sources which is under the Build Phases tab in the project Target. If it is, remove it and add it to Copy Bundle Resources.
Also, try formatting the AJAX like this,
$.ajax({
url:url,
type: 'post',
beforeSend: function(xhr, status, error){
xhr.overrideMimeType("application/json; charset=UTF-8");
},
data: {key: "value"},
error: function(data) {
alert("Error");
console.log("Error");
},
success: function(data, textStatus, jqXHR) {
alert("Success");
}
});
Sounds like a CORS issue. Make sure your REST service headers include:
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Access-Control-Allow-Credentials: true
Related
I am using query mobile for a phonegap application, I am passing through parameters through the url to the next page.
For example:
main.html?id=1, menu.html?id=2 etc
To allow this I have to turn ajaxEnabled to false to allow it to pass through the information I need. In doing so I am unable to use transitions from page to page which means I get a white flash as the page reloads.
I am generating these links dynamically.
$.ajax({
url: 'URLTO WEBSERVER',
dataType: 'jsonp',
jsonp: 'jsoncallback',
timeout: 5000,
success: function(data, status){
$.each(data, function(i,item){
var list = '<li><a href="menu.html?idcat='+item.id_cat+'">'+item.category_cat+'</li>'
output.append(list);
});
},
error: function(jqXHR, textStatus) {
alert( "Request failed: " + textStatus );
output.text('There was an error loading the data.')
}
});
Is there a solution?
you can use method jquery serialize data for your paramater.
via changePage method in jquery
I hope solved :D
I think he is concerned about the "white plash page" that happens after the request is completed from server and then he calls changePage.
He is not worried about how to send parameters to server etc. This is assuming all that is working fine.
I've built a simple web service using the Web Api and I want to consume it from a simple mVC view using jQuery. I'm developing on localhost and consuming the service from Azure, which is why I'm using jsonp.
When I run my jQuery I view in Fiddler and the request is successful and json sent back but the .Ajax function returns these errors:
NaN, parsererror, and callback was not called
<script>
$(function () {
var callback = function(data) {
alert(data);
};
$.ajax({
url: 'http://itjobsdirect.azurewebsites.net/api/values/getbytitle?title=developer',
type: 'GET',
dataType: 'jsonp',
jsonpCallback: 'callback',
success: function (data) {
$('#main').text(data);
},
error: function(jqXHR, textStatus, error) {
alert(jqXHR.status + jqXHR.message);
alert(textStatus);
alert(error);
}
});
});
</script>
I found this question: JsonP with Web Api is it still relevant?
Thanks for your help!
Yes, the link to that question you have there is still relevant.
ASP.NET Webapi doesn't ship with a default formatter that understands the dataType of 'jsonp' and so the solution here is to add a custom JsonpMediaTypeFormatter (as shown in the answer for the questions you have linked).
I'm trying to post a JS Object stored in a hidden field:
$("#hdnArr").val(JSON.stringify(arr));
<pre>
$.ajax({
url: form.action,
type: 'POST',
data: $(form).serialize(),
success: function (result) {
//
},
error: function (xhr, textStatus, exceptionThrown) {
//
}
});
</pre>
Locally it is working fine, but in a production server (windows 2012 server with IIS 8), it is returng a Bad Request Error. With Firebug I checked that my hidden value is like this:
hdnArr=%5B%7B%22Type%22%3A%22%22%2C%22TypeB%22%3A%22%22%2C%22TypeC%22%3A%22%22%2C%22TypeD%22%3A%22%22%7D%5D
This problem is basically the % character. How can I enable my server to accept this char?
Ok, I could solve this problem just switching the Managed Pipeline from App Pool to Classic Mode.
I'm using Phonegap 2.1.0 on iOS. In my main.html-file I'm loading some html using jQuery.
However, one of the html-files I'm loading has its own Javascript that loads other files, in the same way ($.ajax etc.). Phonegap in Android loads these files and executes the Javascript in them, but iOS does not.
Example:
index.html:
<...>
<body>
<script>
$(document).on('pageinit', function() {
$.ajax({
url: 'some.url',
success: function(data, status, jqxhr) {
$("#some-div").html(data);
},
error: function(jqxhr, status, error) {}
});
});
</script>
</body>
</...>
some.url:
<script type="text/javascript">
head.js(
"config-file.js",
function() {
$.ajax({
url: PATH + 'some-other.url', // PATH? see below
success: function(data, status, jqxhr) {
$("#some-div").html(data);
},
error: function(jqxhr, status, error) {}
});
});
</script>
config-file.js:
var PATH = 'mypath';
some-other.url:
fails to load in iOS
All loaded files are served from the same domain.
Again, the code above works in Android. Any ideas why iOS fails to do this, and how to solve it? Is it head.js? (0.9.6)
Since you are using jQuery Mobile, which depends on jQuery anyways, why not just use jQuery to do the file loading ?
$.getScript('path')
.done(function(){
...
});
Otherwise you could also give HeadJS v0.99 a try to see if it fixes your issues.
Before you hate me because this goes against the purpose of ajax, here's my reasoning:
I have an HTML5 PhoneGap application that does data access to an asp.NET MVC web service using Form Authentication. I want to link to an action that returns a PDF file, then and show that file in mobile Safari. The problem is, if I do a target="_blank", the request comes from safari, which doesn't have the forms authentication auth cookie, stored in the app, so the request is not authenticated. If I don't use target="_blank", the request is authenticated properly, and loaded in the entire webview (PhoneGap) and I don't have access to the "Open in iBooks" or "Open in.." buttons provided by Safari.
I want to be able to ajax load the PDF, then display the result in safari, by opening in a new tab. Is this possible?
Edit: I'm trying this now:
$.ajax({
url: downloadURL,
type: 'GET',
xhrFields: {
withCredentials: true
},
success: function(data, textStatus, jqXHR) {
//console.log(data);
window.location = 'data:application/pdf;'+data;
},
error: function(jqXHR, textStatus, errorThrown) {
console.log('Error retrieving data: ' + errorThrown + '\n' + jqXHR);
},
complete: function(jqXHR, textStatus) {
}
});
but this is resulting in an invalid pdf download. Any idea how I can fix it?