I developed an app for iOS and Android which accesses an HTML file from my webserver using the in-app browser (Webview).
I don't want that a user can access this file without using the app.
Is there a possibility to detect, if the user is accessing the file with
the app or directly via a browser on this smartphone / tablet /
computer? I think that a solution with PHP is much better, because
Javascript can be switched off. At least Google Analytics can
differentiate between Safari and Safari (in-app). It should work with
every version of iOS and Android.
Thanks for your help.
Solution
After many attempts I finally found a working solution for me!
iOS:
You can detect the difference between Safari and the in-app browser
using the user agent. Probably there's a nicer solution, but it works.
// Safari (in-app)
if ((strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile/') !== false) && (strpos($_SERVER['HTTP_USER_AGENT'], 'Safari/') == false) {
echo 'Safari (in-app)';
}
Android:
The package name from the app is stored in the PHP variable
$_SERVER['HTTP_X_REQUESTED_WITH'].
// Android (in-app)
if($_SERVER['HTTP_X_REQUESTED_WITH'] == "com.company.app") {
echo 'Android (in-app)';
}
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