Is there something similar to iOS's canOpenURL to check URL schemes for mobile browsers? [duplicate]

This question already has answers here: 开发者_如何学C Closed 10 years ago.

Possible Duplicate:

iPhone Safari: check if URL scheme is supported in javascript?

I'm using pic2shop to provide barcode scanning for a mobile web app. For iOS, one can check [canOpenURL] to see if a particular scheme is valid (tel://, pic2shop://). Is there anything in mobile browsers (iOS, Android, etc) that provides the same functionality?

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You may try placing that URL in an iframe and wait for some seconds. If you are not being redirected to an app, it means that it's not registered.

setTimeout(function() {
  alert('It seems that your device does not support our feature.');
}, 1000);

document.write('<iframe style="border:none; width:1px; height:1px;" src="pic2shop://"></iframe>');