利用Hook进行埋点测试

一.统计信息

1.目前做的Hook埋点位置，待补

• 页面的停留时间(viewWillAppear+viewWillDisappear)
• 按钮点击事件(setTarget:action:)
• 列表点击事件(didSelectRowAtIndexPath:)

2.先写HookTool

#pragma mark - Hook分类方法
+(void)swizzlingInClass:(Class)cls originalSelector:(SEL)originalSelector swizzledSelector:(SEL)swizzledSelector
{
    Class class = cls;
    Method originalMethod = class_getInstanceMethod(class, originalSelector);
    Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
    
    BOOL didAddMethod =
    class_addMethod(class,
                    originalSelector,
                    method_getImplementation(swizzledMethod),
                    method_getTypeEncoding(swizzledMethod));
    
    if (didAddMethod) {
        class_replaceMethod(class,
                            swizzledSelector,
                            method_getImplementation(originalMethod),
                            method_getTypeEncoding(originalMethod));
    } else {
        method_exchangeImplementations(originalMethod, swizzledMethod);
    }
}

#pragma mark - Hook代理方法

+ (void)swizzlingInClass:(Class)cls swizClass:(Class)swcls originalSelector:(SEL)originalSelector swizzledSelector:(SEL)swizzledSelector;
{
    Method originalMethod = class_getInstanceMethod(cls, originalSelector);
    Method replacedMethod = class_getInstanceMethod(swcls, swizzledSelector);
    IMP replacedMethodIMP = method_getImplementation(replacedMethod);
    // 将样替换的方法往代理类中添加, (一般都能添加成功, 因为代理类中不会有我们自定义的函数)
    BOOL didAddMethod =
    class_addMethod(cls,
                    swizzledSelector,
                    replacedMethodIMP,
                    method_getTypeEncoding(replacedMethod));
    
    if (didAddMethod) {// 添加成功
        // 获取新方法在代理类中的地址
        Method newMethod = class_getInstanceMethod(cls, swizzledSelector);
        // 交互原方法和自定义方法
        method_exchangeImplementations(originalMethod, newMethod);
    }else{// 如果失败, 则证明自定义方法在代理方法中, 直接交互就可以
        method_exchangeImplementations(originalMethod, replacedMethod);
    }
}

3.页面停留时间

@implementation UIViewController (UserStatics)

+(void)load
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        SEL originalSelector_viewappear = @selector(viewWillAppear:);
        SEL swizzledSelector_viewappear = @selector(swiz_viewWillAppear:);
        [JSXHookTool swizzlingInClass:[self class] originalSelector:originalSelector_viewappear swizzledSelector:swizzledSelector_viewappear];

        SEL originalSelector_viewdisappear = @selector(viewWillDisappear:);
        SEL swizzledSelector_viewdisappear = @selector(swiz_viewWillDisappear:);
        [JSXHookTool swizzlingInClass:[self class] originalSelector:originalSelector_viewdisappear swizzledSelector:swizzledSelector_viewdisappear];
    });
}

#pragma mark - Method Swizzling
- (void)swiz_viewWillAppear:(BOOL)animated
{
    //SDLog(@"页面展示:%@",NSStringFromClass(self.class));
    //友盟统计
    [MobClick beginLogPageView:NSStringFromClass(self.class)];
    [self swiz_viewWillAppear:animated];
}

- (void)swiz_viewWillDisappear:(BOOL)animated
{
    //SDLog(@"页面消失:%@",NSStringFromClass(self.class));
    //友盟统计
    [MobClick endLogPageView:NSStringFromClass(self.class)];
    [self swiz_viewWillDisappear:animated];
}

4.按钮的点击事件

@implementation UIControl (UserStatics)

+ (void)load {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        SEL originalSelector = @selector(sendAction:to:forEvent:);
        SEL swizzledSelector = @selector(swiz_sendAction:to:forEvent:);
        [JSXHookTool swizzlingInClass:[self class] originalSelector:originalSelector swizzledSelector:swizzledSelector];
    });
}

#pragma mark - Method Swizzling
- (void)swiz_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event;
{
    //插入埋点代码
    [self performUserStastisticsAction:action to:target forEvent:event];
    [self swiz_sendAction:action to:target forEvent:event];
}

- (void)performUserStastisticsAction:(SEL)action to:(id)target forEvent:(UIEvent *)event;
{
    //统计设置点击次数
    [MobClick event:[NSString stringWithFormat:@"%@-%@",target,NSStringFromSelector(action)]];
    //SDLog(@"按钮点击%@",[NSString stringWithFormat:@"%@-%@",target,NSStringFromSelector(action)]);
}

5.UITableViewCell点击事件

@implementation UITableView (UserStatics)

+ (void)load {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        SEL originalSelector = @selector(setDelegate:);
        SEL swizzledSelector = @selector(swiz_setDelegate:);
        [JSXHookTool swizzlingInClass:[self class] originalSelector:originalSelector swizzledSelector:swizzledSelector];
    });
}

-(void)swiz_setDelegate:(id<UITableViewDelegate>)delegate
{
    [self swiz_setDelegate:delegate];
    Class class = [delegate class];
    SEL originalSelector = @selector(tableView:didSelectRowAtIndexPath:);
    SEL swizzledSelector = @selector(swiz_tableView:didSelectRowAtIndexPath:);
    [JSXHookTool swizzlingInClass:class originalSelector:originalSelector swizzledSelector:swizzledSelector];
    [JSXHookTool swizzlingInClass:class swizClass:self.class originalSelector:originalSelector swizzledSelector:swizzledSelector];
}

#pragma mark - Method Swizzling
-(void)swiz_tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //插入埋点代码
    //SDLog(@"所属控制器%@",NSStringFromClass(tableView.viewController.class));
    [self swiz_tableView:tableView didSelectRowAtIndexPath:indexPath];
}