Currently working on a rails application , i want to send and receive data to this chrome application https://github.com/GoogleChrome/chrome-nfc.
I added chrome.runtime.sendMessage() function inside app.js file to send a simple "hello world" to my browser and
chrome.runtime.onMessage.addListener(function(response,sender,sendResponse){alert(response);});
to show it but I get nothing.
Is it the right way to communicate between them ?
Are you using near field (NFC)? If not, you may want to do something much more simple to pass info between your Chrome App and Rails on server, use an XHR request:
https://developer.chrome.com/apps/app_external#external
I am using the Twilio API and can successfully make outgoing calls to a phone number, but when I try to enter another username to connect to, nothing happens. I have two emulators running (one with the Android quickstart client, with which I can make outgoing calls to another user. I can make calls from the Android client to the iOS client using usernames and it works fine, but when I try to do the same from the iOS client to the Android client, nothing happens. I don't get a crash or anything, I just get the initial sound that it tries to start, then the disconnect sound. Here is my code:
- (IBAction)dialButtonPressed:(id)sender {
[self.dialField resignFirstResponder];
NSDictionary *params = #{#"To": self.dialField.text};
_connection = [_phone connect:params delegate:nil];
}
I have searched everywhere I can think of online, but every reference seems to talk only about calls with a phone number. The Twilio API for Android handles this easily, but I cannot figure it out for iOS. Any suggestions would be greatly appreciated.
Thanks in advance!!
Much thanks to Zack from Twilio who finally noticed that we just needed to add client: before the username when trying to call a user rather than a phone number (When using the Heroku App for the server setup as instructed in the Quickstart tutorial). Not sure why this is not built into the iOS instructions, but it is to the Android version. I'm just glad to have something that works.
I just have to dial client: then the username right into the dial field and it works. Now I can make any desired programming changes.
Thanks
I am running into a situation which I am not sure is possible from technical/design point of view. Please advise.
Here is what I need:
I have an open URL registered for my native iOS app. I expect a request ID to be passed along with it and once hit I open that request.
From within my native iOS app, I need to open a web page in the webview. This page has few buttons in it.
A tap on the button in the webview should open the request inside my app. So, I want to trigger the registered open URL in step #1.
Web page data is dynamic and will change on the fly.
Is this a feasible design. Shall I consider something else.
Any advise/pointers will be appreciated.
This should be possible. Here's a though:
1: Implement the UIWebview delegate method shouldStartLoadWithRequest.
2: when you intercept that your webview is attempting to access the url yourapp://blah-blah-blah you can return NO instead dip into your appdelegate can manually call the function handleOpenURL.
I've seen something similar in the past with supporting oAuth (I believe it was with instagram) within one of our apps. We basically loaded up the login page in a UIWebview and then when we detected the the post login redirect we parsed the oAuth token from the url and called it good.
Good luck
We are having an issue on our network with iOS devices (ipads, iphones etc): After connecting to the SSID, the iphone / ipad immediately opens the Captive Network Assistant (CNA) - it is like a scaled-down browser without navigation buttons etc - that displays our welcome page (ready for the user to authenticate his MAC in the network to give him internet). This CNA is a functin of iOS, and happens automatically.
I was looking around on this forum how to make the user open his Safari browser by clicking a link (while in the CNA), thus sending him away from the CNA and into Safari (which is where I would prefer him to be).
I searched phrases such as: "How to set a link to open in safari", but I get results about people using phonegap to do such a thing...
One user talked about using
window.open(myURL, '_system')
but I don't know if that is solving my issue.
Basically my plan is to:
- Have my Welcome Page (the page displayed after the user connected to my SSID) detect what type of browser the user's device has. My Welcome Page is hosted at a site which is in the Walled Garden of my controller, so every device can see that Welcome page (whether they have full internet access or not).
- If the user has an iOS device, the CNA browser opens automatically. My controller detects the device has a CNA browser and loads a simple page with the message (like): "click here to start to navigate"
- During the next few seconds (while the user is digesting the message), my controller gives the user's MAC full internet access
- When the user clicks that link in the CNA browser, the CNA closes and then opens Safari, and also forces Safari to open the destination Welcome Page (where I want my user to be, depending on the antenna to which he connected).
I really hope that all makes sense...
I found this link about the CNA browser in this forum:
Bypasses Apple Captive Network Assistant Login in iOS 7
But it talks having the user open Safari right from the start (disabling the CNA function), "hoping" that the user opens Safari (rather then going directly to one of his apps). I prefer that the user has to "click to continue", which makes Safari open and he sees my Welcome Page.
EDIT : this solution doesn't work after iOS 10.3. Not sure if that's a feature or a bug : https://forums.developer.apple.com/thread/75498
EDIT2 : Apparently it works again on iOS 11
There is a simple way to do that, if you have control over the captive portal server.
When connecting to a wifi network, iOS devices send a GET request to a bunch of predefined urls (http://www.apple.com/library/test/success.html, ...) , to see if there is Internet connectivity (wispr requests). The iOS device expects the answer <HTML><HEAD><TITLE>Success</TITLE></HEAD><BODY>Success</BODY></HTML>. If the request succeeds, but the answer is different (for example your captive portal page), it triggers the CNA to open.
At this stage, the CNA thinks you are not connected and will show a Cancel button at the top. Every link will open inside the CNA and not in a Safari window, no matter what you do. The CNA is done so that you can get your user through the log-in process. In order to see if the log-in process is done and connection is finally established, the iOS device will now and then send another wispr request. This happens every 40 seconds, or whenever an HTTP request is emitted (navigation within the CNA).
When your server finally answers Success to a wispr request, the CNA will mark as connected, the button at the top will change into Done. At this stage, any link to an external url will close the CNA and open in Safari :)
So to summarize, you can achieve what you want with the following connection steps :
server answers initial wispr request with your CNA page.
the page opens in CNA. In that page, have some JavaScript that immediately triggers navigation within the CNA, for example : <script>window.location.reload(true)</script> this will trigger the iOS device to immediately send another wispr request
server answers this second wispr request with <HTML><HEAD><TITLE>Success</TITLE></HEAD><BODY>Success</BODY></HTML>, this will trigger the CNA to mark as connected
have your CNA page to show a link to an external url
Extracted from an answer by Ryan at How can I open an external link in Safari not the app's UIWebView?
To have a specific link switch to Safari, simply add target="_system" to the link, as in
Link Text
Or to catch all links in your javascript that have target="_blank", include jQuery and pass them to window.open with the '_system' param. This will work on both iOS and Android.
$(document).on('click', 'a[target="_blank"]', function(ev) {
var url;
ev.preventDefault();
url = $(this).attr('href');
window.open(url, '_system');
});
Javascript does NOT work fully in CNA, it is disabled for security reason.
target="_system" is a safari feature, not a CNA one.
==> briefly, _system fails in CNA.
I'm looking into Geoloqi as a service for sending messages and I'm wondering about the url parameter described here:
https://developers.geoloqi.com/api/message/send
Can I use a custom protocol/URL scheme to launch my app in response to a sent message.
(I would assume yes, but need to be sure before progressing further with it).
According to the web page you've linked, one of the parameters that can be sent along with the "POST" is a URL that can be opened when the notification is tapped.
It's here that I think you could put your custom URL. No way to know if the server will accept a custom scheme (e.g. "bradrobinson://hi/there") though without trying.