iOS custom url scheme - ios

Question

I'm creating an app that uses a custom url scheme, I have it all set up and it works when opening the app up, however, I now want to be able to add a single string to the url so that the person that opens the app can see that string. I'm really struggling with this, can someone help me please?
Here is my code
- (NSDictionary*)parseURLParams:(NSString *)query
{
NSArray *pairs = [query componentsSeparatedByString:#"&"];
NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
for (NSString *pair in pairs)
{
NSArray *kv = [pair componentsSeparatedByString:#"="];
NSString *val = [[kv objectAtIndex:1]
stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[params setObject:val forKey:[kv objectAtIndex:0]];
}
return params;
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:#"Send Challenge"])
{
[FBWebDialogs presentRequestsDialogModallyWithSession:nil
message:[NSString stringWithFormat:#"I just scored %i points on this great game, called SumsUp. can you beat it?!", gameScore]
title:nil
parameters:nil
handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error)
{
// Error launching the dialog or sending the request.
NSLog(#"Error sending request.");
}
else
{
if (result == FBWebDialogResultDialogNotCompleted)
{
// User clicked the "x" icon
NSLog(#"User canceled request.");
}
else
{
// Handle the send request callback
NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
if (![urlParams valueForKey:#"request"])
{
// User clicked the Cancel button
NSLog(#"User canceled request.");
}
else
{
// User clicked the Send button
NSString *requestID = [urlParams valueForKey:#"request"];
NSLog(#"Request ID: %#", requestID);
}
}
}
}];
}
I have got the custom url setup in the P-List.
in my app delegate I have:
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
UIAlertView *alertView;
NSString *text = [NSString stringWithFormat: #"url recieved: %#", url];
alertView = [[UIAlertView alloc] initWithTitle:#"" message:text delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
return [FBAppCall handleOpenURL:url sourceApplication:sourceApplication withSession:[PFFacebookUtils session]];
}
I hope this makes sense and somebody can help me. If any more information is required please let me know?
Thanks Graham

Answer 1

I had problem with custom URL Scheme on ios v. 9.x.x. when i tried open Youtube URL by App. I have found interesting fact when i have browsed through network.
iOS 9 requires your app to pre-register application schemes it intends to call.
Open your YourApp-Info.plist file and add the key, LSApplicationQueriesSchemes.
List item under LSApplicationQueriesSchemes, add a
new item with the value youtube (in my case).
<key>LSApplicationQueriesSchemes</key>
<array>
<string>youtube</string>
</array>

Answer 2

My solution is simpler. I hope you will find it useful.
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
// Example URL: myapp://myapp.com/showString/yourString
BOOL isMyAppURL = [[url scheme] isEqualToString:#"myapp"];
if (isMyAppURL)
{
NSArray* pathComponents = [url pathComponents];
NSString *command = pathComponents[0];
// Check for showString command.
if ([command isEqualToString:#"showString"])
{
NSString *stringToShow = [pathComponents[1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(#"String to show: %#", stringToShow);
}
}
return isMyAppURL;
}
This should point you to the right direction.