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As you probably know, iPhone applications can register a custom URL scheme handler, ala "myapp:" and these can be used for links in a page viewed in Safari.

I'd like to automatically launch my application from a specific page if the visitor has the app installed. If the app's not installed, I'll just show them the current mobile-optimized view of the page.

How can I do this detection? Google searches have been fruitless. Also, to be tricky, I've tried doing something like this to no avail:

var image = new Image();
image.onerror = function(e){
  alert("bummer");
}
image.onload = function(e){
  alert('success!');
}
image.src = 'myapp://something=meaningful';

Has anyone come across a way to do application detection?

davemyron
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    not possible... sorry dude :-/ Unfortunately, this could be used to do _all kinds_ of bad things. It would be an advertisers jackpot :-) – Ben Gotow Jul 16 '09 at 04:18
  • @BenGotow do you know how Android does this without all kinds of bad things happening? – Shane Jun 04 '15 at 23:16

2 Answers2

6

The solution I've presented on another Stack Overflow question is about as close as you're going to get.

Community
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Nathan de Vries
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    Yeah - I put that concept to use (but used localStorage instead of cookies for better persistence). Thanks. – davemyron Jul 17 '09 at 19:14
0

I don't think this is possible. You would need to register your app on the iPhone/Mobile Safari and then create a uri to fire your app up, just like http:, ftp: mailto:. So in your case you would have something like Am I installed Mobile Safari would need to know what app to fire up to load that URI and I just don't think this functionality is built into the iPhone. I know there is no way javascript can query your iPhone to see what's installed.

I hope I am wrong as this seems like it would be a powerful feature, though on the other side I can see some security issues related to something like this.

Good luck.

OhioDude
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  • The custom URL scheme is certainly possible, so handling "myapp://" URLs is no problem. My desire is to check if the app is installed to *handle* those URLs before trying to send a visitor to the app. – davemyron Jul 16 '09 at 02:13