nfarina

#import <UIKit/UIKit.h>

@interface UIView (SMFrameAdditions)

@property (nonatomic, assign) CGPoint $origin;
@property (nonatomic, assign) CGSize $size;
@property (nonatomic, assign) CGFloat $x, $y, $width, $height; // normal rect properties
@property (nonatomic, assign) CGFloat $left, $top, $right, $bottom; // these will stretch the rect

@end

jordanekay

NSTimeInterval duration = 3.0;
SEL selector = @selector(_setContentOffsetAnimationDuration:);
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[scrollView methodSignatureForSelector:selector]];

[invocation setSelector:selector];
[invocation setTarget:scrollView];
[invocation setArgument:&duration atIndex:2];
[invocation invoke];

[scrollView setContentOffset:contentOffset animated:YES]