Asked  7 Months ago    Answers:  5   Viewed   39 times

I'd like to have iOS to open URLs from my domain (e.g. with my app whenever the app is installed on the phone, and with Mobile Safari in case it is not.

I read it is possible to create a unique protocol suffix for this and register it in the Info.plist, but Mobile Safari will give an error in case the app is not installed.

What would be a workaround?

One idea:

1) Use http:// URLs that open in any desktop browser and render the service through the browser

2) 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

Not sure if this will work... suggestions? Thanks!



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 "" 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 = "";
}, 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://";
Tuesday, June 1, 2021
answered 7 Months ago

Yes and no. There is no reason why you cannot have PHP running on your own server computer that returns HTML or XML that gets consumed by your mobile application, but to the best of my knowledge, there is currently no way to have PHP running on the mobile phone, itself (although even if you could, PHP is typically a server-side technology and not a client-side technology, so that would be unusual).

I should add that most mobile applications are merely thin clients for web services. You are best off first implementing the web service (using whatever language you find most appropriate), and then creating mobile phone application that simply provides a UI for invoking the service and displaying the results.

Saturday, May 29, 2021
answered 7 Months ago

As of iOS 8, it's possible to launch the Settings app that directly opens your Privacy app section in this way:

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];

In Swift:

if let settingsURL = NSURL(string: UIApplicationOpenSettingsURLString) {

In Swift 3.0:

if let settingsURL = URL(string: UIApplicationOpenSettingsURLString + Bundle.main.bundleIdentifier!) {
    UIApplication.shared.openURL(settingsURL as URL)
Thursday, July 15, 2021
answered 5 Months ago

Ok your bundle path looks jacked, below should work.

NSBundle *bundle = [NSBundle mainBundle];
NSString *moviePath = [bundle pathForResource:@"disc" ofType:@"mp4"];
NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain];

theMoviPlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
theMoviPlayer.controlStyle = MPMovieControlStyleFullscreen;
theMoviPlayer.view.transform = CGAffineTransformConcat(theMoviPlayer.view.transform, CGAffineTransformMakeRotation(M_PI_2));
UIWindow *backgroundWindow = [[UIApplication sharedApplication] keyWindow];
[theMoviPlayer.view setFrame:backgroundWindow.frame];
[backgroundWindow addSubview:theMoviPlayer.view];
[theMoviPlayer play];
Thursday, September 30, 2021
Igor Tupitsyn
answered 2 Months ago

If you had both the IP's and they were both routable, it should be possible. I'm not sure though if the IP's given out by the 3G network are routable. If you are using WIFI, the IP you get is almost certainly not routable. Assuming you have a routable IP though, it should be possible.

The trick is just discovering the IP of the other device. The best way to do that would probably be to have each device register its IP with a web service when your app starts up, then query that service to find the IPs of other devices.

It might get a bit tricky managing "unregistering" IPs when the app is closed or when an IP changes though, but it should be doable.


If you have a server that they can both connect to, you should be able to implement a solution using that server (i.e. without the phones actually directly connecting to each other). This would avoid the issue of having routable IPs for the phones.

As for how to bridge the sockets together - your server program would basicly work like an old-school phone switchboard operator. You'd have some kind of registration & discovery protocol built into the server software that would allow a phone to register itself with the server, query a list of the other phones currently connected to the server, indicate which phone it wants to talk to, and accept connections from other phones.

Once it knows who wants to talk to whom, your server software would connect the two together by reading from one phone's socket and writing that data to the other phone's socket.

Saturday, October 9, 2021
Peter Bridger
answered 2 Months ago
Only authorized users can answer the question. Please sign in first, or register a free account.
Not the answer you're looking for? Browse other questions tagged :