iOS基于AFNetworking的post、get方法的封装及获取当前网络状态的实现

afnetworking是一个常用的网络请求库，每个项目的网络请求和返回格式不同，afnetworking返回的通用型的，我们可以封装一层，让其更适合我们自己的项目。
实现代码：

#import 
typedef void (^requestcompleteblock)(id response);
typedef void (^requesterrorblock)(nserror *error);

@interface bzhttprequesthelper : nsobject


/**
 post请求

 @param url 接口地址
 @param params 入参
 @param completeblock 成功回调
 @param errorblock 失败回调
 */
+(void)postwithurl:(nsstring *)url
params:(nsdictionary *)params
 complete:(requestcompleteblock)completeblock
 error:(requesterrorblock)errorblock;



/**
 get请求

 @param url 接口地址
 @param params 入参
 @param completeblock 成功回调
 @param errorblock 失败回调
 */
+(void)getwithurl:(nsstring *)url
params:(nsdictionary *)params
complete:(requestcompleteblock)completeblock
error:(requesterrorblock)errorblock;

@end

#import "bzhttprequesthelper.h"
#import "afnetworking.h"
//根据服务器返回的格式定义的基础返回模型
#import "bzhttpresponse.h"
//网络状态判断
#import "bznetworkstatusmanager.h"

@implementation bzhttprequesthelper

+(afhttpsessionmanager *)sharehttpsessionmanager{
 static afhttpsessionmanager * manager = nil;
 static dispatch_once_t oncetoken;
 dispatch_once(&oncetoken, ^{
  manager = [afhttpsessionmanager manager];
  manager.requestserializer = [afhttprequestserializer serializer];
  manager.responseserializer = [afjsonresponseserializer serializer];
  manager.requestserializer.timeoutinterval = 30;
 });
 return manager;
}

+(void)postwithurl:(nsstring *)url params:(nsdictionary *)params complete:(requestcompleteblock)completeblock error:(requesterrorblock)errorblock{
 //判断当前网络状态，如果是无网络状态可直接提示用户，且放弃网络请求
 if (![bznetworkstatusmanager sharenetworkstatusmanagerinstance].isnetworkavailable) {
  [bzhttprequesthelper shownetworkunavailable];
  return;
 }
 [[bzhttprequesthelper sharehttpsessionmanager] post:url parameters:params progress:^(nsprogress * _nonnull uploadprogress) {

 } success:^(nsurlsessiondatatask * _nonnull task, id  _nullable responseobject) {
  //拿到返回数据后做相应的处理，下面的是根据服务器定义的一些错误码来判断请求是否成功返回
  bzhttpresponse * responsemodel = [[bzhttpresponse alloc] init];
  nserror * error;
  if ([responseobject iskindofclass:[nsdictionary class]]) {
[responsemodel setvaluesforkeyswithdictionary:responseobject];
if (responsemodel.code == 0) {
 if (completeblock) {
  if (responsemodel.data) {
completeblock(responsemodel.data);
  }else{
completeblock(responsemodel);
  }

 }
}else{
 if (responsemodel.code  == 7) {
  //token失效，退出登录
  [[nsnotificationcenter defaultcenter] postnotificationname:current_user_kickout object:nil];
 }else{
  error = [nserror errorwithdomain:responsemodel.message code:responsemodel.code userinfo:nil];
 }
 if (errorblock) {
  errorblock(error);
 }
}
  }else{
error = [nserror errorwithdomain:@"服务器数据结构错误" code:-100 userinfo:nil];
if (errorblock) {
 errorblock(error);
}
  }

 } failure:^(nsurlsessiondatatask * _nullable task, nserror * _nonnull error) {
  nslog(@"error == %@",error);
  if (errorblock) {
errorblock(error);
  }
 }];
}

+(void)getwithurl:(nsstring *)url params:(nsdictionary *)params complete:(requestcompleteblock)completeblock error:(requesterrorblock)errorblock{
 if (![bznetworkstatusmanager sharenetworkstatusmanagerinstance].isnetworkavailable) {
  [bzhttprequesthelper shownetworkunavailable];
  return;
 }
 [[bzhttprequesthelper sharehttpsessionmanager] get:url parameters:params progress:^(nsprogress * _nonnull downloadprogress) {

 } success:^(nsurlsessiondatatask * _nonnull task, id  _nullable responseobject) {
  if (completeblock) {
completeblock(responseobject);
  }
 } failure:^(nsurlsessiondatatask * _nullable task, nserror * _nonnull error) {
  if (errorblock) {
errorblock(error);
  }
 }];
}

+(void)shownetworkunavailable{
 dispatch_async(dispatch_get_main_queue(), ^{
  uiwindow * window = [[[uiapplication sharedapplication] delegate] window];
  [window maketoast:@"当前网络不可用，请检查网络稍后再试" duration:1.5 position:cstoastpositionbottom];
 });
}

@end

获取当前网络状态：

#import 

@interface bznetworkstatusmanager : nsobject

+(instancetype)sharenetworkstatusmanagerinstance;
@property(nonatomic,assign) bool isnetworkavailable;

@end

#import "bznetworkstatusmanager.h"
#import "afnetworking.h"

@implementation bznetworkstatusmanager

+(instancetype)sharenetworkstatusmanagerinstance{
 static bznetworkstatusmanager * manager = nil;
 static dispatch_once_t oncetoken; 
 dispatch_once(&oncetoken, ^{
  manager = [[bznetworkstatusmanager alloc] init];
 });
 return manager;
}

-(instancetype)init{
 self = [super init];
 if (self) {
  [self monitornetworking];
 }
 return self;
}

-(void)monitornetworking{
 [[afnetworkreachabilitymanager sharedmanager] startmonitoring];
 [[afnetworkreachabilitymanager sharedmanager] setreachabilitystatuschangeblock:^(afnetworkreachabilitystatus status) {
  switch (status) {
case -1:
 nslog(@"未知网络");
 break;
case 0:
 nslog(@"网络不可达");
 break;
case 1:
 nslog(@"gprs网络");
 break;
case 2:
 nslog(@"wifi网络");
 break;
default:
 break;
  }
  if (status == afnetworkreachabilitystatusreachableviawwan || status == afnetworkreachabilitystatusreachableviawifi) {
nslog(@"有网");
self.isnetworkavailable = yes;
  }else{
nslog(@"没网");
self.isnetworkavailable = no;
  }
 }];
}

@end