Is it considered a private API to use App-prefs:root?
Yes. The only legal way to open Settings is to use UIApplicationOpenSettingsURLString.
url-scheme
How to use tel: with * (star, asterisk) or # (hash, pound) on iOS?
This documentation from Apple should be helpful: To prevent users from maliciously redirecting phone calls or changing the behavior of a phone or account, the Phone application supports most, but not all, of the special characters in the tel scheme. Specifically, if a URL contains the * or # characters, the Phone application does not … Read more
Check if URL scheme is supported in javascript
Not seamlessly. But there is a way similar to checking if a pop-up was blocked or not. When you try a URL scheme which is not supported, Safari will warn the user that it doesn’t know what to do with it and stay on the same page. So if you gave your app-call some time … Read more
How to mark-up phone numbers?
The tel: scheme was used in the late 1990s and documented in early 2000 with RFC 2806 (which was obsoleted by the more-thorough RFC 3966 in 2004) and continues to be improved. Supporting tel: on the iPhone was not an arbitrary decision. callto:, while supported by Skype, is not a standard and should be avoided … Read more
iOS Launching Settings -> Restrictions URL Scheme
AS @Nix Wang‘s ANSWER THIS IS NOT WORK IN IOS 10 WARNING: This method will not work for devices running iOS 5.1 and greater – See Hlung’s comment below. It’s possible that the path component has a different name than the actual section, but it’s also possible that you can’t currently access that section straight … Read more
Open Facebook page from Android app?
This works on the latest version: Go to https://graph.facebook.com/<user_name_here> (https://graph.facebook.com/fsintents for instance) Copy your id Use this method: public static Intent getOpenFacebookIntent(Context context) { try { context.getPackageManager().getPackageInfo(“com.facebook.katana”, 0); return new Intent(Intent.ACTION_VIEW, Uri.parse(“fb://page/<id_here>”)); } catch (Exception e) { return new Intent(Intent.ACTION_VIEW, Uri.parse(“https://www.facebook.com/<user_name_here>”)); } } This will open the Facebook app if the user has it installed. … Read more