Bending UIKit to your will

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@steipete

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Private API

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Development

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po [[UIWindow keyWindow] recursiveDescription]

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- (UIViewController *)_viewDelegate;

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[[UIApplication sharedApplication] performSelector:NSSelectorFromString(@"_performMemoryWarning")];

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extern void CGPathPrint(CGPathRef path, FILE* file);

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CGFloat PSPDFSimulatorAnimationDragCoefficient(void) { void *UIKit = dlopen([[[NSBundle bundleForClass:[UIApplication class]] executablePath] fileSystemRepresentation], RTLD_LAZY); CGFloat (*UIAnimationDragCoefficient)(void) = (CGFloat (*)(void))dlsym(UIKit, "UIAnimationDragCoefficient"); return UIAnimationDragCoefficient? UIAnimationDragCoefficient() : 1.f; }

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[[NSNotificationCenter defaultCenter] addObserverForName:nil object:nil queue:nil usingBlock:^(NSNotification *note) { NSLog(@"Catch-All: %@", note); }];

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UIWindowFirstResponderDidChangeNotification

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Testing

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Nocilla KIF PonyDebugger OHHTTPStubs

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Fixing Apple’s bugs

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[_UIPageCurl _pageCurlAnimationDidStop:withState:]: message sent to deallocated instance 0x14a03fe0

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NSClassFromString([NSString stringWithFormat:@"_%@urlState", @"UIPageC"]);

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Fun

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Fun

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UIRemoteViewController

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- (void)attentionClassDumpUser:(id)arg1 yesItsUsAgain:(id)arg2 althoughSwizzlingAndOverridingPrivateMethodsIsFun:(id)arg3 itWasntMuchFunWhenYourAppStoppedWorking:(id)arg4 pleaseRefrainFromDoingSoInTheFutureOkayThanksBye:(id)arg5;

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@interface CASpringAnimation : CABasicAnimation @property float damping; @property float mass; @property float stiffness; @property float velocity; @end

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Technical debt

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- (void)addChildViewController:(id)controller;

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Improve UI

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Demo time

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Hopper

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Thanks! (And don’t tell Apple) @steipete - say Hi!