How to launch iOS app via custom URL and allow to open a webpage if it's not installed? - iphone

I'd like to be able to send invitation in an email to a specific "event" happening inside my iOS app. So I figured I'd need to use custom URL. That's fine.
But I'd also like to be able to handle the user that doesn't have the app installed yet, to be taken to a mobile Safari and to the webpage with installation instructions for the app.
What would be the best way to do it?
I could try the following:
In the email I send a link to a http://www.example.com/joinevent/?id=foo
User is taken to a Safari webpage that sends a redirect to mycustomscheme://joinevent/?id=foo
If the user doesn't have the app installed this redirection won't work and he stays in the Safari - I could then handle the displaying of installation instructions probably.
But this approach doesn't seem "natural" for me. Is there a better/more native way to do it?

Try http://rdrct.it
It is a web service that allows you to achieve exactly this functionality very easily.
Full disclosure - I created rdrct.it
Here's the basics:
Login to the site, create a project for your particular app. Choose a unique code (this could be the name of your app).
You'll then be provided with a URL in the form: http://rdrct.it/uniqueCode
Once you've done that, you need to register the app's ID in the app store, and also details about the custom URL scheme. Tick "Auto-redirect" - what it will then do is try to open the app, and if that fails, it will automatically send the user to the app store.
If the app is opened, then the querystring is also passed to the app, so in your example case, the device will have been served: mycustomscheme://joinevent/?id=foo
It also works across multiple device types, so if you have the app available for Blackberry, Android or Windows Phone, then it will also do the same for those depending on which device type the user is using.
Like I said, I created it, but it should solve your problem.

If you are using Distimo to track you app analytics, they provide a shortlink to your apps that can be used also used to track conversions. It shows a custom page depending on the device used to access. This is especially convenient if you have the same app published in the AppStore, Google Play, Amazon, etc.

Related

codename one. How to share a link to your app.

What I want to achieve here is similar to what most apps do, specifically like Youtube. If I share a video on youtube the user gets a link to the video. When the link is clicked the user is automatically taken to the video in the Youtube app (if the user has the app). I want that sort of functionality. My app has different stores on it and information about the store. I want the user to be able to "Share" a store via Whatsapp, sms etc so then when the receiver clicks on the shared link they are automatically taken to that specific store's page INSIDE my app. And if they do not have the app the link must take them to my app's page in the app store to allow them to download it. How do I achieve this in codename one. I looked at the share functionality in the developer doc and the How To section and that only shows me how to share text or images. Not a link to my app.
You can use the ShareButton or it's underlying native share API call (notice this behaves differently on devices as this relies on native functionality).
To share one URL that works on all platforms you need server side code as we have no way of knowing if the guy who will click the link has the same device as you have.
How to make QR code for BOTH Android Market and App Store answers that although it discusses QR codes this is applicable to links as well e.g. http://onelink.to/ looks like it could solve that although I haven't tried their service.
The correct answer to this question was actually URL intercepting. http://www.codenameone.com/blog/intercepting-urls-on-ios-android.html You share a url from your app to an external application. When the user opens that lick in an external application the user is automatically taken to your app if your app intercepts it.

How to implement my android algorithm on iOS?

I have an android app working this way:
User read QR-code with my specific URL
If the app installed it intercepts this URL and handles it somehow.
If app not installed standard browser opens this URL and it leads to Google play on app page.
When user install and run app first time it read browser's history and look for my URL.
If app found URL in browser's history then it handles this URL again.
Is it possible to implement this behavior on iPhone/iPad?
I suppose key features here are to read browser history and to intercept http URL's.
If this is impossible how would you implement this thing on iOS?
Thanks in advance for your help.
You can use custom application URLs in the form: myApp://... iOS will automatically launch the application if present. The logic for handling the 'not-installed' case has to be in the QR code scanning app. can be handled by the scanned website via a forwarding link using the iOS custom URL scheme (this might be useful for usage stats).
Additional info on implementing Custom URLs...

Detecting installed apps on iPhone with javascript or url

I am building a HTML5 based mobile web app for iPhone. I need to check whether user has specific application that I suggest. I heard that each iPhone application has unique URL scheme to detect their app indentity.
Therefore, I've read this article to get an idea.
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
However, this is not perfect answer to make what I am trying to make.
here is what might happen
User clicks a recommendation app on mobile web browser.
Check with application iTunes URL and URL scheme.
If the user has the installed application, it returns 'installed'
==> In this case, the screen returns back to mobile browser.
If the user does not have the installed application, it returns 'uninstalled'
==> In this case, the screen moves to App Store.
I am running mobile web app with PHP language.
Thank you.
this is not possible I'm afraid. To be honest I'm glad, as there are real privacy concerns if any old web page can detect which apps I have installed.
That's definitely not a good thing!
UPDATE: If you're happy to go native, this library will do what you want.. http://www.cocoacontrols.com/platforms/ios/controls/ihasapp
If you know that a url scheme for the app exists then you can open it via a web link like this, "myapp://". With this there are some round about ways you can effectively check if a certain app exists.
See this related stackoverflow post

iPhone: Pass information from web page to app that's downloaded from App Store

I'm trying to glue information from a web page to an iPhone app that said web page suggests to download. I control both the web page and the downloadable app.
Scenario is like this:
User visits my web page, on which I recognize the user (he may have logged in, and I store his info in a cookie). I then present a link to him to an app in the App Store that he should download for "enhanced experience" of this web service of mine.
Now, when the user launches the downloaded app on his iPhone, I like to re-identify the user who previously visited said web page.
All would be easy if an iPhone app could read Safari's cookies. But it can't.
A somewhat lame solution could be that the web server stores the visitor's IP address and uses that to recognize him once he launches the iPhone app. But that's not reliable.
Another one would be to give the user a token (code) that he needs to remember and then re-enter in the app. Still quite awkward, I think.
Any better suggestions?
Simply put, you can't do this.
One thing you could consider is a custom URL scheme to launch the app. You could send the user an email that uses this custom link. However there's a couple of problems with this:
the user may not have the account that they used to register for your site set up on their iPhone. This might seem unlikely, but say the user signed up for your site 5 years ago with their Hotmail account and they have since switched to Gmail.
it's unlikely that the email would fit into their workflow. They would probably download the app and just launch it by touching the icon instead of clicking a link in a received email.
You could also put the custom URL as a link on your web page, but again, this won't fit into the workflow because they have to go to the App Store app to do the download.
Consider this - if you've got some sort of website that has an authentication step, it's probably a fair bet to say that the user is the type of person who already has an application such as Facebook installed on their iPhone. They are already used to the paradigm of having to enter their credentials into an application despite the fact that they may have already done it in Safari.
If you could read the unique iPhone device ID from javascript on your web page, you could look for that again when the application connected...
But I cannot find any means of reading this from Javascript in Mobile Safari, I thought I'd post in case there is a way now to give you another option to consider.
OK, we found a somewhat working solution: The html code can create a cookie. Later, when the app runs, it can't directly read that cookie, of course (due to the sandboxing of iPhone apps). However, it can connect to the server, then open a http URL pointing to the server and including a unique token that it has gotten from the server beforehand. This leads to launching Safari, accessing the server. The server can now read the aforementioned cookie and finally establish the connection with the help of the token.
Just stumbled over this question and I'm curious if you thought about using a UIWebView.
Where the question is - does UIWebView share cookies with safari?
If it does the rest should be easy.
UIWebView's DON'T share cookies with Safari. So unfortunately that is not an option.

starting iChat session in iPhone from web app

This is really just a "what-if" type question, so forgive me if it is either ridiculous or ridiculously easy...
I have a client whose site offers a "chat with a consultant" option that you see on many sales and support sites. We were wondering if there was a way that iPhone users (or any user, in theory, but mostly iPhone) could click this option and after giving the basic form info (name, question,etc) the actual chat itself could open up in the chat client.
Is this as simple as the "click here to send me an AIM message" syntax?
The XMPP (jabber) server is Openfire and the webchat uses the Fastpath plugin. Would this feature need to be enabled deeper than the page's HTML/PHP? Does the server/plugin need to modified as well?
Would this threaten the security of the XMPP server (which is behind a firewall and can only be accessed externally via the above plugin)?
Does this even sound like something that iPhone users would appreciate, or would it simply be confusing/obtrusive?
Sorry for the objective last question, but I'd hate to spend time on this only irritate users.
Referrals to resources and documentation welcome. I'm not looking for someone to walk me through the whole thing, I just want to get an idea of it can be done and where to start reading.
I'm a little confused by what you want to do - the user fills out a form on a web site and then they are put into a "chat room" on their iPhone?
This is possible. However all of them require that the user has already installed your app, so it may be a hurdle to what you are trying to do.
However if it's using a pre-existing chat service (such as AIM), you may already be OK if the user already has a chat client installed on their iPhone. You could launch the app using custom urls or push notifications - however, this is assuming that the app developer has enabled such hooks, and if so if they are published.
If you want to go with your own client, if the user is filling out the form on the iPhone, then on submission you could redirect them to a custom url for your application. From mobile Safari, this will directly launch your app. Note that the user must already have the app installed for this to work, or else they'll see an error, and it won't be a particularly user-friendly one.
Another way, if the user is filling out the form on their computer, is via push notification. Again, they must first have the app installed. They would receive a notification that, on acceptance, launches your app.
The final way, if the user is filling out the form on their computer, is that they would have to download your app first and run it, so that it could communicate with a desktop client of yours via network services.