gistfile1.m

@implementation UIWindow (WLOAnalytics)

+(void)load{
    Class class = [UIWindow class];
    SEL swizzleIt = @selector(sendEvent:);
    SEL swizzleTo = @selector(WLORuntime_sendEvent:);
    Method methodIt = class_getClassMethod(class, swizzleIt);
    Method methodTo = class_getClassMethod(class, swizzleTo);
    
    method_exchangeImplementations(methodIt, methodTo);
}

-(void)WLORuntime_sendEvent:(UIEvent *)event{
    [self WLORuntime_sendEvent:event];
}

@end