I Would like to open my app from safari, i am new with working with iOS and mobile application development.
My Website is written in PHP, And i Am Using Objective-c for iOS development.
Ow figured it out was a mistake of not refreshing app
here is an example of switching from browser totally using javascript
window.location = "myApp://";
This example call app to an iframe so as to preserve the state of the website: still in javascript:
var frame = document.createElement('iframe');
frame.src = 'myApp://';
frame.style.display = 'none';
document.body.appendChild(frame);
// avoid unnecessary iframe on the page
setTimeout(function() { document.body.removeChild(frame); }, 4);
Note that on this examples i have not put any parameters yet which would be like:
myApp://params
Objective-c End Looks more like this:
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options
Still have a long way to go but will get there thanks for you help.
Related
Can someone please tell me if socket.io is only useful if the page your clients will use is a HTML page.
I want to create a node server that can push events to my existing PHP pages.
The pages are different and not suffixed with html.
All the examples I read use Chatroom examples with Index.html etc.
I simply want to know if what I want to do is even feasible.
Many thanks in advance.
When you write a php page the output is html. I hope that answers your question
PHP and socket.io work together. The only difference between doing it with html and with PHP is the way you link the two together (the common tutorial shows a way that only works with html, but there is another way that works with both html and php).
Try something like this (from a similar answer of mine, https://stackoverflow.com/a/25189436/3842050):
var socket = require('socket.io');
var express = require('express');
var http = require('http');
var app = express();
var server = http.createServer(app);
var io = socket.listen(server);
Then remove the app.use and app.get as they are no longer needed for how this is going to be done. Then add server.listen(8000); at the end of the server.js. For dependencies, use: <script src="//cdn.socket.io/socket.io-1.0.0.js"></script>. Then, to run your server, go to it in terminal and type node server.js. Then just connect to it with your client. Also, for events, in the server, use:
io.on('connection', function (client) {
client.on('someEvent', function(someVariables){
//Do something with someVariables when the client emits 'someEvent'
io.emit('anEventToClients', someData);
});
client.on('anotherEvent', function(someMoreVariables){
//Do more things with someMoreVariables when the client emits 'anotherEvent'
io.emit('anotherEventToClients', someMoreData);
});
});
And in your client code:
socket.emit('someEvent', variables);
socket.on('anEventToClients', function(something){
//Code when anEventToClient is emitted from the server
});
I'm creating an Adobe Air app for our members. Each time they open the app, I want it to quickly verify their membership status in the background before it allows them to use it. Unfortunately, I don't have access to the WordPress database that would tell me this valuable information.
Would it be possible to open a URL in the background (completely invisible to the user) that pings their member's only page on our site? Currently, if a non-member tries to access that page, it redirects them to a 404 error page. By loading it in the background, would there be a way for my app to tell if it was redirected to the 404 page or not?
That might be a horrible workaround, so any better ideas are completely welcomed.
You could write a server sided PHP script which will return "true" or "false" according to a userId:
http://yourdomain.com/isMember.php?userId=XXX
And then you could use the AS3 URLLoader class like so:
var urlRequest:URLRequest = new URLRequest("http://yourdomain.com/isMember.php?userId=" + userId);
var urlLoader:URLLoader = new URLLoader();
urlLoader.addEventListener(Event.COMPLETE, urlLoader_complete);
urlLoader.load(urlRequest);
function urlLoader_complete(evt:Event):void {
if(urlLoader.data == "true")
{
trace("A valid member!");
}
else
{
trace("An invalid member!");
}
}
I write my scripts in PHP, and there are HTML and javascripts inside. What I want is when I click a button(in HTML), it calls a javascript function, the function should visit a url like "http://localhost/1/2" And the page stays as before. Is it feasible?
I just want it work, no matter in js or php. Thanks.
Since the page is on the same domain, you may use an Ajax request:
var request = new XMLHttpRequest();
request.open("GET", url, true);
request.send(null);
Note that this does not do any error-checking, however. If you need that, there are a multitude of available tutorials easily found with a search.
And since you ask, for pages not on the same domain, using an <iframe> is sometimes possible:
var frame = document.createElement("iframe");
frame.src = url;
frame.style.position = "relative";
frame.style.left = "-9999px";
document.body.appendChild(frame);
This is commonly known as AJAX (being able to send a request to the server and receive a response back without navigating away from the page).
AJAX is supported in ALL modern browsers, but sometimes there are inconsistencies, so it is best to use a javascript framework such as JQuery, YUI or another framework.
I tend to use YUI, so here's a quick example on how to send an AJAX request using YUI. This uses the IO Utility:
// Create a YUI instance using io module.
YUI().use("io", function(Y) {
var uri = "http://localhost/1/2";
// Define a function to handle the response data.
function complete() {
Y.log('success!');
};
// Subscribe to event "io:complete"
Y.on('io:complete', complete);
// Make an HTTP request to 'get.php'.
// NOTE: This transaction does not use a configuration object.
var request = Y.io(uri);
});
So I'm running a crawler on my server and I'm needing to execute javascript to gain access to some of the data on my target site (target being the one I want to crawl). I had a question regarding a different approach to the problem here, but it's not needed for answering this one: [Dead]How to successfully POST to an old ASP.NET site utilizing Asynchronous Postback
My javascript is executed in the browser I call my php crawler from. The problem is that all javascript requests are targeted back at my own server rather than the target site (I get lead to links like /index.php on my own site rather than the target site).
My experience with javascript is pretty minimal and I'm not sure how I should redirect my requests to my target. Here is an example of a javascript function from the page that I'm calling:
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['aspnetForm'];
if (!theForm) {
theForm = document.aspnetForm;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
... and the way that I call it:
echo "<SCRIPT language='javascript'>__doPostBack('-254870369', '')</SCRIPT>";
Is there some way of aliasing the server address from my own server to the target server or doing some other kind of handy workaround that would fix this problem?
There is no need to inject javascript in the target.
You can use wireshark to study all request made by the target. Wireshark is a quite hard to master but powerful. Instead you can try the net tab of the firebug addon.
Once you know how the target send requests and receive data from their server, you can use curl to imitate the request/receiving data. You don't need any more to build crawlers.
If this not answers your question explain a little more the scenario.
I am having some consistency problems with my flash application, when I echo out variables for flash to get, it doesn't always pick up what PHP is sending, it seems to vary from PC to PC.
I am getting info from a database, and I need to pass it to flash, say for instance I need to send through 5 variables $uid,$name,$points,$from,$page , how could I go about sending these from PHP to flash using AMFPHP?
I was told that AMFPHP would be the best tool to use for such situations, but I have NO knowledge of how it works and the sample code on the site is not making complete sense to me.
Thanx in advance!
You cannot push it from PHP to Flash - the communication has to be initiated by the Flash end. And you don't need AMFPHP for this; just use a URLLoader.
var ldr:URLLoader = new URLLoader();
ldr.addEventListener(Event.COMPLETE, onLoad);
ldr.load(new URLRequest("page.php"));
function onLoad(e:Event):void
{
var loadedText:String = URLLoader(e.target).data;
/**
* Following will throw error if the text
* is not in the format `a=something&b=something%20else`
* */
var data:URLVariables = new URLVariables(loadedText);
for(var t:Object in data)
trace(t + " : " + data[t]);
}
inside the page.php, just do a simple echo:
//don't forget to urlencode your variables.
echo "uid=$uid&name=$name&points=$points";
It seems a hassle to get involved with AMFPHP just to send a couple of variables to a flash file. I suggest you try:
Flashvars (though it's kind of limited to short variables)
LoadVariables
XML (returning the values you need as XML from PHP)
All of the above have worked consistently for me.