iOS通过Runtime实现友盟统计的实例代码
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
{
[superviewWillAppear:animated];
[MobClickbeginLogPageView:@"PageOne"];//("PageOne"为页面名称，可自定义)
}
-(void)viewWillDisappear:(BOOL)animated
{
[superviewWillDisappear:animated];
[MobClickendLogPageView:@"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 // //CreatedbyZSPon2017/6/16. //Copyright©2017年ZSP.Allrightsreserved. // #import@interfaceUIViewController(Statistics) @end
UIViewController+Statistics.m
//
//UIViewController+Statistics.m
//TongYuanHospital
//
//CreatedbyZSPon2017/6/16.
//Copyright©2017年ZSP.Allrightsreserved.
//
#import"UIViewController+Statistics.h"
@implementationUIViewController(Statistics)
+(void)load{
//原本的viewWillApper方法
MethodviewWillAppear=class_getInstanceMethod(self,@selector(viewWillAppear:));
//需要替换成能够输入日志的viewWillAppear
MethodlogViewWillAppear=class_getInstanceMethod(self,@selector(logViewWillAppear:));
//原本的viewWillDisappear方法
MethodviewWillDisappear=class_getInstanceMethod(self,@selector(viewWillDisappear:));
//需要替换成能够输入日志的viewWillDisappear
MethodlogviewWillDisappear=class_getInstanceMethod(self,@selector(logviewWillDisappear:));
//两方法进行交换
method_exchangeImplementations(viewWillAppear,logViewWillAppear);
method_exchangeImplementations(viewWillDisappear,logviewWillDisappear);
}
-(void)logViewWillAppear:(BOOL)animated
{
[selflogViewWillAppear:animated];
NSString*selfClass=NSStringFromClass([selfclass]);
[MobClickbeginLogPageView: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
//[MobClickendLogPageView:self.title];
}
-(void)logviewWillDisappear:(BOOL)animated
{
[selflogviewWillDisappear:animated];
NSString*selfClass=NSStringFromClass([selfclass]);
[MobClickendLogPageView:selfClass];
}
@end
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