The basic syntax for an intent-based URI is as follows: intent: This gives you a lot more flexibility in controlling how apps are launched, including the ability to pass extra information into the app via Intent Extras. The best practice is to construct an intent anchor and embed that into the page so the user can launch the app. Instead, you should implement a user gesture to launch the app via a custom scheme, or use the "intent:" syntax described in this article. For example, navigating an iframe to a URI with a custom scheme such as paulsawesomeapp:// will not work even if the user has the appropriate app installed. It is no longer possible to launch an Android app by setting an iframe's src attribute. The functionality has changed slightly in Chrome for Android, versions 25 and later.
It also works in the Android browser, of course. This works in the Chrome for Android browser, version 18 and earlier. One scenario is launching an app when the user lands on a page, which you can achieve by embedding an iframe in the page with a custom URI-scheme set as the src, as follows. A little known feature in Android lets you launch apps directly from a web page via an Android Intent.
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