奋斗的七月
在友盟官网可以看到相应的步骤，申请appkey，导入SDK，然后在AppDelegate里面写入相应的代码，下面就是关键的代码：
实现页面的统计需要在每个UIViewController中配对调用如下方法：
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[MobClick beginLogPageView:@"PageOne"];//("PageOne"为页面名称，可自定义)
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[MobClick endLogPageView:@"PageOne"];
}
几年之前做过这个，那时候才刚开始做iOS，就按照这个文档在每一个UIViewController里面写了这个方法，现在看来真是太low了。
这次又做这个友盟统计，就想起来用runtime解决这个问题。
在工程中创建一个UIViewController的Category，然后通过
Runtime动态添加两个方法，分别替代viewWillAppear和viewWillDisappear方法。这样就不需要在每一个UIViewController写这段代码了。
新建一个分类：
UIViewController+Statistics.h
//
// UIViewController+Statistics.h
// TongYuanHospital
//
// Created by ZSP on 2017/6/16.
// Copyright © 2017年 ZSP. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface UIViewController (Statistics)
@end
UIViewController+Statistics.m
//
// UIViewController+Statistics.m
// TongYuanHospital
//
// Created by ZSP on 2017/6/16.
// Copyright © 2017年 ZSP. All rights reserved.
//
#import "UIViewController+Statistics.h"
@implementation UIViewController (Statistics)
+ (void)load {
//原本的viewWillApper方法
Method viewWillAppear = class_getInstanceMethod(self, @selector(viewWillAppear:));
//需要替换成能够输入日志的viewWillAppear
Method logViewWillAppear = class_getInstanceMethod(self, @selector(logViewWillAppear:));
//原本的viewWillDisappear方法
Method viewWillDisappear = class_getInstanceMethod(self, @selector(viewWillDisappear:));
//需要替换成能够输入日志的viewWillDisappear
Method logviewWillDisappear = class_getInstanceMethod(self, @selector(logviewWillDisappear:));
//两方法进行交换
method_exchangeImplementations(viewWillAppear, logViewWillAppear);
method_exchangeImplementations(viewWillDisappear, logviewWillDisappear);
}
-(void)logViewWillAppear:(BOOL)animated
{
[self logViewWillAppear:animated];
NSString *selfClass = NSStringFromClass([self class]);
[MobClick beginLogPageView:selfClass];
//当然这里也可以使用self.title作为页面的名称，这样在友盟后台查看的时候更加方便些
//[MobClick endLogPageView:self.title];
}
-(void)logviewWillDisappear:(BOOL)animated
{
[self logviewWillDisappear:animated];
NSString *selfClass = NSStringFromClass([self class]);
[MobClick endLogPageView:selfClass];
}
@end
