我有一个代码，我修改了从外部JSON文件中提取数据。有两个NSArrays。一个用于图像，一个用于颜色。然后，当按下特定数组时，它会打开一个webviewcontroller。我让它完美地工作。这是问题所在。我希望能够在外部随时修改JSON并让应用程序更新信息，但由于NSArray信息是硬编码的，所以如果我从JSON中删除了一个objectforkey，我不知道如何删除数组。任何帮助将不胜感激。
调用图像和颜色的代码是：
- (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];
}
然后按下它时会调用以下内容：
- (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];
}