问题描述
2017-03-13 12:47:33.978 JJYSPlusPlus[9734:5104425] -[WYPlaceholderTextView removeObserver:]: unrecognized selector sent to instance 0x7ffb4e293e00(lldb)
+ (void)load { // Swizzle dealoc to remove observer when current object is deallocated. Class classToSwizzle = [UITextView class]; // NSString *className = NSStringFromClass(classToSwizzle); SEL deallocSelector = sel_registerName('dealloc'); __block void (*originalDealloc)(__unsafe_unretained id, SEL) = NULL; id newDealloc = ^(__unsafe_unretained id objSelf) {[objSelf removeObserver:self];if (originalDealloc == NULL) { struct objc_super superInfo = {.receiver = objSelf,.super_class = class_getSuperclass(classToSwizzle) }; void (*msgSend)(struct objc_super *, SEL) = (__typeof__(msgSend))objc_msgSendSuper; msgSend(&superInfo, deallocSelector);} else { originalDealloc(objSelf, deallocSelector);} }; IMP newDeallocIMP = imp_implementationWithBlock(newDealloc); if (!class_addMethod(classToSwizzle, deallocSelector, newDeallocIMP, 'v@:')) {// The class already contains a method implementation.Method deallocMethod = class_getInstanceMethod(classToSwizzle, deallocSelector);// We need to store original implementation before setting new implementation// in case method is called at the time of setting.originalDealloc = (void(*)(__unsafe_unretained id, SEL))method_getImplementation(deallocMethod);// We need to store original implementation again, in case it just changed.originalDealloc = (void(*)(__unsafe_unretained id, SEL))method_setImplementation(deallocMethod, newDeallocIMP); }}
在一个详情里使用了一个带有placeholder的TextView,pop详情时走了dealloc方法,也就是TextView的dealloc里移除了监听placeholder的通知,然而这个时候莫名其妙的crash了,查找之下,发现是一个第三方组组件里hook了delloc方法... 这可咋么办啊 根本不知道从何搞起..
把这个第三方组件删了.显然这是要有大动作...
请问各位大佬们有木有一套行之有效,无痛解决的方法....在线等,急!问题解答
回答1：你在pop的时候手动移除吧
