3D Touch功能在iOS9系统上的crash-白红宇

复现步骤：在UIImagePickController系统相册collection页面上随便长按任意一张图片便会crash

复现机型：有3D Touch功能的机型（6s以后的设备）

堆栈信息：

Exception Type:  EXC_CRASH (SIGABRT)Exception Codes: 0x00000000 at 0x0000000000000000Crashed Thread:  0 Application Specific Information:*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSObject previewingContext:viewControllerForLocation:]: unrecognized selector sent to class 0x19f34e020' Thread 0 name:  Dispatch queue: com.apple.main-thread Thread 0 Crashed:0   CoreFoundation                  __exceptionPreprocess + 1241   libobjc.A.dylib                 objc_exception_throw + 562   CoreFoundation                  __CFExceptionProem + 03   UIKit                           -[UICollectionViewController previewingContext:viewControllerForLocation:] + 1724   UIKit                           -[_UIViewControllerPreviewSourceViewRecord previewInteractionController:viewControllerForPreviewingAtPosition:inView:presentingViewController:] + 2485   UIKit                           -[UIPreviewInteractionController startInteractivePreviewAtLocation:inView:] + 2246   UIKit                           -[UIPreviewInteractionController startInteractivePreviewWithGestureRecognizer:] + 1367   UIKit                           -[UIPreviewInteractionController _handleRevealGesture:] + 1008   UIKit                           _UIGestureRecognizerSendTargetActions + 1649   UIKit                           _UIGestureRecognizerSendActions + 17210  UIKit                           -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 78411  UIKit                           ___UIGestureRecognizerUpdate_block_invoke898 + 7212  UIKit                           _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 37213  UIKit                           _UIGestureRecognizerUpdate + 240414  UIKit                           -[UIWindow _sendGesturesForEvent:] + 113215  UIKit                           -[UIWindow sendEvent:] + 76416  UIKit                           -[UIApplication sendEvent:] + 24817  UIKit                           _UIApplicationHandleEventQueue + 552818  CoreFoundation                  __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 2419  CoreFoundation                  __CFRunLoopDoSources0 + 54020  CoreFoundation                  __CFRunLoopRun + 72421  CoreFoundation                  CFRunLoopRunSpecific + 38422  GraphicsServices                GSEventRunModal + 18023  UIKit                           UIApplicationMain + 20424  moma                            main (main.m:15)25  libdyld.dylib                   start + 4复制代码

修复方式：hook UICollectionViewController中的previewingContext:viewControllerForLocation:方法并返回nil即可

Code

#import 
    
     #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(ver)    ([[[UIDevice currentDevice] systemVersion] compare:@#ver options:NSNumericSearch] != NSOrderedAscending)#define SYSTEM_VERSION_LESS_THAN(ver)                   ([[[UIDevice currentDevice] systemVersion] compare:@#ver options:NSNumericSearch] == NSOrderedAscending)@implementation UICollectionViewController (DEF3DTouchCrashFix)+ (void)load{	 //经测试iOS 9.3版本不再有该问题    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(9.0)        && SYSTEM_VERSION_LESS_THAN(9.3)) {        static dispatch_once_t onceToken;        dispatch_once(&onceToken, ^{            SEL originalSelector = @selector(previewingContext:viewControllerForLocation:);            SEL overrideSelector = @selector(p_previewingContext:viewControllerForLocation:);                        Method originalMethod = class_getInstanceMethod(self, originalSelector);            Method overrideMethod = class_getInstanceMethod(self, overrideSelector);                        if (!originalMethod) {                return;            }                        BOOL success = class_addMethod(self, originalSelector, method_getImplementation(overrideMethod), method_getTypeEncoding(overrideMethod));            if (success) {                class_replaceMethod(self, overrideSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));            } else {                method_exchangeImplementations(originalMethod, overrideMethod);            }        });    }}- (UIViewController *)p_previewingContext:(id
     
      )previewingContext viewControllerForLocation:(CGPoint)location {    return nil;}@end复制代码