2019獨(dú)角獸企業(yè)重金招聘Python工程師標(biāo)準(zhǔn)>>>

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[錯(cuò)誤代碼示范]@interface UIViewController (Track) - (void)testTrack; - (void)handleTrack:(id)arg withSelector:(NSString*)sel withDict:(NSDictionary*)eventDict; @end@implementation UIViewController (Track) - (void)testTrack {NSLog(@"- (void)testTrack"); }- (void)handleTrack:(id)arg withSelector:(NSString*)sel withDict:(NSDictionary*)eventDict {NSLog(@"- (void)handleTrack");id<AspectInfo> aspectInfo = arg;NSLog(@"\n AspectHandlerBlock [%@]\n \n**-**", [[aspectInfo instance] class]);NSLog(@"\n AspectInfo originalInvocation<%@>, \n<%@>", aspectInfo.originalInvocation, aspectInfo.arguments);//特殊動(dòng)態(tài)處理，動(dòng)態(tài)獲取labelName || eventIDNSString * labelString = eventDict[TrackEvent_Label];NSString * idString = eventDict[TrackEvent_ID];if (eventDict[TrackEvent_Action]) {NSString * actionString = eventDict[TrackEvent_Action]; //!!!!!!!!!!注意在這錯(cuò)誤NSString * tmpString = [self valueForKey:actionString];NSDictionary * trackDict = @{eventDict[TrackEvent_Value]:tmpString};//!nilif (idString && labelString && trackDict) {NSLog(@"--TalkingData trackEvent--%@,%@,%@", idString, labelString, trackDict);}}else if (idString && labelString){NSLog(@"--TalkingData trackEvent--%@,%@", idString, labelString);} } @end

文章參考：
http://objc-zen-book.books.yourtion.com/Chapter12/01-aspect-oriented-programming.html
http://www.jianshu.com/p/0497afdad36d#
http://tech.glowing.com/cn/method-swizzling-aop/
http://www.jianshu.com/p/69859d580354
http://www.bingjie.me/2015/11/05/OC%E4%B8%ADaspect%E5%88%87%E9%9D%A2%E7%BC%96%E7%A8%8B%E5%BA%94%E7%94%A8.html

對(duì)應(yīng)代碼參考：
https://github.com/weng1250/UserStatisticsWithRuntime
https://github.com/okcomp/AspectsDemo
https://github.com/steipete/Aspects
https://github.com/MikeFighting/LogByRunTime

擴(kuò)展學(xué)習(xí) 參考源碼分析 https://github.com/devedbox/AXWebViewController aspect_hookSelector 知識(shí)擴(kuò)展： 【1】 + (void)load{swizzleMethod([self class], @selector(viewDidAppear:), @selector(swizzled_viewDidAppear:)); } 一般情況下，類(lèi)別里的方法會(huì)重寫(xiě)掉主類(lèi)里相同命名的方法。如果有兩個(gè)類(lèi)別實(shí)現(xiàn)了相同命名的方法，只有一個(gè)方法會(huì)被調(diào)用。但 +load: 是個(gè)特例，當(dāng)一個(gè)類(lèi)被讀到內(nèi)存的時(shí)候， runtime 會(huì)給這個(gè)類(lèi)及它的每一個(gè)類(lèi)別都發(fā)送一個(gè) +load: 消息。【2】Runtime object_getIvar 獲得類(lèi)的變量（包括“所謂私有變量”） 轉(zhuǎn)自 http://blog.csdn.net/lvdezhou/article/details/49509805 OBJC_EXPORT id object_getIvar(id obj, Ivar ivar) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);#import <objc/runtime.h> Person * p1 = [[Person alloc] init];Ivar ivar = class_getInstanceVariable([p1 class], "_sex");id sex = object_getIvar(p1, ivar);NSLog(@"%@", sex);//p1.sex=@"girl";結(jié)果為girl

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轉(zhuǎn)載于:https://my.oschina.net/onepieceios/blog/744946

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