Convert NSArray to NSMutable to remove string dynamically - ios

Question

I have a code that I modified to pull data from an external JSON file. There are two NSArrays. One for the image and one for color. Then, when a particular array is pressed it opens a webviewcontroller. I got it to work perfectly. Here is the problem. I want to be able to modify the JSON anytime I want externally and have the app update the information but since the NSArray information is hardcoded I don't know how to remove an array if I remove an objectforkey from the JSON. Any help would be appreciated.
The code to call the images and colors is:
- (IBAction)onclick:(id)sender {
NSArray *images = #[
[UIImage imageNamed:[NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"PhoneUrl"]]],
[UIImage imageNamed:[NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"TextUrl"]]],
[UIImage imageNamed:[NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"MailUrl"]]]
];
NSArray *colors = #[
[UIColor [NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"PhoneColor"]],
[UIColor [NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"TextColor"]]],
[UIColor [NSString stringWithFormat: #"%#",[dataDictionary objectForKey:#"MailColor"]]],
];
Sidebar *callout = [[Sidebar alloc] initWithImages:images borderColors:colors];
callout.delegate = self;
[callout show];
}
Then when pressed it calls the following:
- (void)sidebar:(Sidebar *)sidebar didTapItemAtIndex:(NSUInteger)index {
self.webViewController = [[PBWebViewController alloc] init];
PBSafariActivity *activity = [[PBSafariActivity alloc] init];
self.webViewController.applicationActivities = #[activity];
self.webViewController.excludedActivityTypes = #[UIActivityTypeMail, UIActivityTypeMessage];
NSLog(#"Tapped item at index %lu",(unsigned long)index);
if (index == 0) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[dataDictionary objectForKey:#"PhoneWeb"]]];
[sidebar dismissAnimated:YES completion:nil];
}
if (index == 1) {
if(![MFMessageComposeViewController canSendText]) {
UIAlertView *warningAlert = [[UIAlertView alloc] initWithTitle:#"Error" message:#"Your device doesn't support SMS!" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[warningAlert show];
return;
}
NSArray *recipents = #[[dataDictionary objectForKey:#"TextWeb"]];
MFMessageComposeViewController *messageController = [[MFMessageComposeViewController alloc] init];
messageController.messageComposeDelegate = self;
[messageController setRecipients:recipents];
[[messageController navigationBar] setTintColor:[UIColor whiteColor]];
[self presentViewController:messageController animated:YES completion:nil];
[sidebar dismissAnimated:YES completion:nil];
}
if (index == 2) {
if ([MFMailComposeViewController canSendMail])
{
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
[[mailer navigationBar] setTintColor:[UIColor whiteColor]];
mailer.mailComposeDelegate = self;
NSArray *toRecipients = [NSArray arrayWithObjects:[dataDictionary objectForKey:#"MailWeb"], nil];
[mailer setToRecipients:toRecipients];
[self presentViewController:mailer animated:YES completion:nil];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Failure"
message:#"Your device doesn't support the composer sheet"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles: nil];
[alert show];
}
[sidebar dismissAnimated:YES completion:nil];
}