I want to initialize 5 viewController's that I want to be able to flick between in a UIScrollView, when my app loads.
One way to do this is programmatically create an UIScrollView in your UIViewController . To control the scrollability you can set the ScrollView contentSize property.
UIScrollView is the superclass of several UIKit classes, including UITableView and UITextView . A scroll view is a view with an origin that's adjustable over the content view. It clips the content to its frame, which generally (but not necessarily) coincides with that of the application's main window.
Here is an example of how you can do this:
- (void)viewDidLoad
{
//standard UIScrollView is added
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
[self.view addSubview:scrollView];
scrollView.pagingEnabled = YES;
scrollView.contentSize = CGSizeMake(320*2, 460); //this must be the appropriate size!
//required to keep your view controllers around
controllers = [[NSMutableArray alloc] initWithCapacity:0];
//just adding two controllers
LabeledViewController *one = [[LabeledViewController alloc] initWithPosition:0 text:@"one"];
[scrollView addSubview:one.view];
[controllers addObject:one];
LabeledViewController *two = [[LabeledViewController alloc] initWithPosition:1 text:@"two"];
[scrollView addSubview:two.view];
[controllers addObject:two];
}
LabeledViewController is pretty simple, but you can add as much to it as you want:
@implementation LabeledViewController
- (id)initWithPosition:(NSInteger)position text:(NSString*)text
{
if (self = [super init]) {
myPosition = position;
myText = [text retain];
}
return self;
}
- (void)viewDidLoad
{
//this will setup the position in the UIScrollView
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(320*myPosition, 0, 320, 460)];
self.view = view;
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 320, 50)];
label.text = myText;
[self.view addSubview:label];
}
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