Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?

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I\'d like to have iOS to open URLs from my domain (e.g. http://martijnthe.nl) with my app whenever the app is installed on the phone, and with Mobile Safari in case it is no

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难免孤独

2020-11-22 04:23

Check the User-Agent and in case it's Mobile Safari, open a myprotocol:// URL to (attempt) to open the iPhone app and have it open Mobile iTunes to the download of the app in case the attempt fails

This sounds a reasonable approach to me, but I don't think you'll be able to get it to open mobile itunes as a second resort. I think you'll have to pick one or the other - either redirect to your app or to itunes.

i.e. if you redirect to myprotocol://, and the app isn't on the phone, you won't get a second chance to redirect to itunes.

You could perhaps first redirect to an (iphone optimised) landing page and give the user the option to click through to your app, or to itunes to get the app if they don't have it? But, you'll be relying on the user to do the right thing there. (Edit: though you could set a cookie so that is a first-time thing only?)

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慢半拍i

2020-11-22 04:24
I think the least intrusive way of doing this is as follows:
1. Check if the user-agent is that of an iPhone/iPod Touch
2. Check for an appInstalled cookie
3. If the cookie exists and is set to true, set window.location to your-uri:// (or do the redirect server side)
4. If the cookie doesn't exist, open a "Did you know Your Site Name has an iPhone application?" modal with a "Yep, I've already got it", "Nope, but I'd love to try it", and "Leave me alone" button.
  1. The "Yep" button sets the cookie to true and redirects to your-uri://
  2. The "Nope" button redirects to "http://itunes.com/apps/yourappname" which will open the App Store on the device
  3. The "Leave me alone" button sets the cookie to false and closes the modal
The other option I've played with but found a little clunky was to do the following in Javascript:
```
setTimeout(function() {
  window.location = "http://itunes.com/apps/yourappname";
}, 25);

// If "custom-uri://" is registered the app will launch immediately and your
// timer won't fire. If it's not set, you'll get an ugly "Cannot Open Page"
// dialogue prior to the App Store application launching
window.location = "custom-uri://";
```
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情深已故

2020-11-22 04:24
It also possible to check tab activity by document.hidden property

Possible solution
```
document.location = 'app://deep-link';

setInterval( function(){
  if (!document.hidden) {
    document.location = 'https://app.store.link';
  }
}, 1000);
```
But seems like this not works in Safari
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庸人自扰

2020-11-22 04:29
```
window.location = appurl;// fb://method/call..
!window.document.webkitHidden && setTimeout(function () {
    setTimeout(function () {
    window.location = weburl; // http://itunes.apple.com/..
    }, 100);
}, 600);
```
document.webkitHidden is to detect if your app is already invoked and current safari tab to going to the background, this code is from www.baidu.com
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走了就别回头了

2020-11-22 04:31
Heres a solution.

Setup a boolean sitiation using blur and focus
```
//see if our window is active
window.isActive = true;
$(window).focus(function() { this.isActive = true; });
$(window).blur(function() { this.isActive = false; });
```
Bind your link with a jquery click handler that calls something like this.
```
function startMyApp(){
  document.location = 'fb://';

  setTimeout( function(){
    if (window.isActive) {
        document.location = 'http://facebook.com';
    }
  }, 1000);
}
```
if the app opens, we'll lose focus on the window and the timer ends. otherwise we get nothing and we load the usual facebook url.
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北海茫月

2020-11-22 04:34

It's quite possible to do this in JavaScript as long as your fallback is another applink. Building on Nathan's suggestion:

<html>
  <head>
    <meta name="viewport" content="width=device-width" />
  </head>
  <body>

    <h2><a id="applink1" href="fb://profile/116201417">open facebook with fallback to appstore</a></h2>
    <h2><a id="applink2" href="unknown://nowhere">open unknown with fallback to appstore</a></h2>
    <p><i>Only works on iPhone!</i></p>    

  <script type="text/javascript">

// To avoid the "protocol not supported" alert, fail must open another app.
var appstorefail = "itms://itunes.apple.com/us/app/facebook/id284882215?mt=8&uo=6";

function applink(fail){
    return function(){
        var clickedAt = +new Date;
        // During tests on 3g/3gs this timeout fires immediately if less than 500ms.
        setTimeout(function(){
            // To avoid failing on return to MobileSafari, ensure freshness!
            if (+new Date - clickedAt < 2000){
                window.location = fail;
            }
        }, 500);    
    };
}

document.getElementById("applink1").onclick = applink(appstorefail);
document.getElementById("applink2").onclick = applink(appstorefail);

</script>
</body>
</html>

Check out a live demo here.

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