修改 hook 逻辑 review by daiqiang

@@ -88,7 +88,7 @@ void yher_collectionViewDidSelectItemAtIndexPath(id self, SEL _cmd, id collectio
         if (!view) {
             return;
         }
-
+        
         [YH_EventCollector trackAppClickWithView:self UICollectionView:collectionView didSelectItemAtIndexPath:indexPath];
     } @catch (NSException *exception) {
         YHLog(@"%@ error: %@", self, exception);
@@ -100,38 +100,22 @@ void yher_collectionViewDidSelectItemAtIndexPath(id self, SEL _cmd, id collectio
     [self yher_collectionViewSetDelegate:delegate];
     
     @try {
-        SEL swizzledMethodSEL = @selector(collectionView:didSelectItemAtIndexPath:);
-        if (![delegate respondsToSelector:swizzledMethodSEL]) {
+        SEL originMethodSEL = @selector(collectionView:didSelectItemAtIndexPath:);
+        if (![delegate respondsToSelector:originMethodSEL]) {
             return;
         }
         
-        Class class = [delegate class];
+        Class delegateClass = [delegate class];
         
-        SEL originMethodSEL = NSSelectorFromString(@"yher_collectionViewDidSelectItemAtIndexPath");
-        if (class_addMethod(class, originMethodSEL, (IMP)yher_collectionViewDidSelectItemAtIndexPath, "v@:@@")) {
-            
-            Method dis_swizzledMethod = class_getInstanceMethod(class, swizzledMethodSEL);
-            
-            //若子类实现了swizzledMethodSEL，直接exchange；
-            //若子类没有实现时，读取父类的方法实现，再添加到子类上，
-            //如果添加成功，exchange实现，否则不交换
-            
-            BOOL isLocal = [[self class] isLocallyDefinedMethod:dis_swizzledMethod onClass:class];
-            if (isLocal) {
-                Method dis_originMethod = class_getInstanceMethod(class, originMethodSEL);
-                method_exchangeImplementations(dis_originMethod, dis_swizzledMethod);
-            }else{
-                if (class_addMethod(class,
-                                    swizzledMethodSEL,
-                                    class_getMethodImplementation(class, swizzledMethodSEL),
-                                    method_getTypeEncoding(class_getInstanceMethod(class, swizzledMethodSEL)))) {
-                    
-                    dis_swizzledMethod = class_getInstanceMethod(class, swizzledMethodSEL);
-                    Method dis_originMethod = class_getInstanceMethod(class, originMethodSEL);
-                    method_exchangeImplementations(dis_originMethod, dis_swizzledMethod);
-                }
-            }
- 
+        SEL swizzleMethodSEL = NSSelectorFromString(@"yher_collectionViewDidSelectItemAtIndexPath");
+        
+        Method originMethod = class_getInstanceMethod(delegateClass, originMethodSEL);
+        
+        Class class = GetSelectorInsClass(delegateClass,originMethodSEL,originMethod);
+        
+        if (class_addMethod(class, swizzleMethodSEL, (IMP)yher_collectionViewDidSelectItemAtIndexPath, "v@:@@")) {
+            Method swizzleMethod = class_getInstanceMethod(class, swizzleMethodSEL);
+            method_exchangeImplementations(originMethod, swizzleMethod);
         }
         
     } @catch (NSException *exception) {
@@ -139,4 +123,15 @@ void yher_collectionViewDidSelectItemAtIndexPath(id self, SEL _cmd, id collectio
     }
 }
 
+Class GetSelectorInsClass(Class hclass, SEL sel, Method sel_method) {
+    Class super_class = [hclass superclass];
+    if (!super_class) {
+        return hclass;
+    }
+    Method method = class_getInstanceMethod(super_class, sel);
+    if (method != sel_method) {
+        return hclass;
+    }
+    return GetSelectorInsClass(super_class, sel, sel_method);
+}
 @end