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    <p>Solved! I incorporated Notifications instead of trying to directly call a method from a subview.</p> <p>Quick overview of my setup. UIViewController FishIDView contains a UIScrollView called scrollView. scrollView has a subview XMLView. XMLView has a button that shows its subview, flipView. I wanted scrolling to be disabled on scrollView when flipView was visible.</p> <p>In XMLView.h (with irrelevant code omitted):</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import &lt;QuartzCore/QuartzCore.h&gt; #define kApplicationDidStopScrollingNotification @"StopScroll" #define kApplicationDidResumeScrollingNotification @"ResumeScroll" #import "FishIDView.h" @interface XMLView : UIView { IBOutlet UIButton *infoButton; IBOutlet UIButton *closeButton; IBOutlet UIView *flipView; } @property (nonatomic, retain) IBOutlet UIButton *infoButton; @property (nonatomic, retain) IBOutlet UIButton *closeButton; - (IBAction)goToInfo; - (IBAction)closeSubView; @end </code></pre> <p>In XMLView.m:</p> <pre><code>#import "XMLView.h" @implementation XMLView @synthesize infoButton, closeButton; - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code } return self; } //Allows button to be pressed while contained in subview of scrollview - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { CGPoint hitPoint = [infoButton convertPoint:point fromView:self]; CGPoint closePoint = [closeButton convertPoint:point fromView:flipView]; if ([infoButton pointInside:hitPoint withEvent:event]) return infoButton; if ([closeButton pointInside:closePoint withEvent:event]) return closeButton; return [super hitTest:point withEvent:event]; } -(IBAction)goToInfo { //post notification for FishIDView to listen to to trigger method that disables scrolling [[NSNotificationCenter defaultCenter] postNotificationName:kApplicationDidStopScrollingNotification object:nil]; [self addSubview:flipView]; //custom transition between views. A cross-fade effect flipView.alpha = 0.0f; [UIView beginAnimations:@"fadeInSecondView" context:NULL]; [UIView setAnimationDuration:0.5]; flipView.alpha = 1.0f; [infoButton setEnabled:FALSE]; [UIView commitAnimations]; } - (IBAction)closeSubView { //post notification to resume scrolling [[NSNotificationCenter defaultCenter] postNotificationName:kApplicationDidResumeScrollingNotification object:nil]; flipView.alpha = 1.0f; [UIView beginAnimations:@"fadeInSecondView" context:NULL]; [UIView setAnimationDuration:0.5]; flipView.alpha = 0.0f; [infoButton setEnabled:TRUE]; [UIView commitAnimations]; [flipView performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:1.2]; } @end </code></pre> <p>Make sure to put #import "XMLView.h" into your FishIDView.h file at the top and create the -(void) methods at the bottom.</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import "XMLView.h" @class AppDelegate; @interface FishIDView : UIViewController &lt;UIScrollViewDelegate&gt; { ... } @property ... //These are the 2 methods that turn scrolling on and off -(void) stopScrolling; -(void) resumeScrolling; @end </code></pre> <p>Then in FishIDView.m</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. [scrollView setScrollEnabled:YES]; //Listen for the notification to stop scrolling [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(stopScrolling) name:kApplicationDidStopScrollingNotification object:nil]; //Listen for the notification to resume scrolling [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(resumeScrolling) name:kApplicationDidResumeScrollingNotification object:nil]; [self layoutSubview]; } -(void) stopScrolling { [scrollView setScrollEnabled:NO]; NSLog(@"NO more scrolling!!!"); } -(void) resumeScrolling { [scrollView setScrollEnabled:YES]; NSLog(@"begin scrolling again!!"); } </code></pre> <p>If anyone has questions or is having trouble implementing this, I'll be happy to share more of my code. I just omitted most of it because it doesn't really pertain to this subject.</p>
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