iOS中使用单例类时，如何调用加号方法

本文拿afnetworking  来说；

/*

.h 文件中

@property (nonatomic, strong)AFHTTPRequestOperationManager *shareClient;

+(instancetype)getSingleClass;

*/

------------------------>>>>>>>>>>>>>>>>>>>------------------

.m文件中

/**

 *  单例类

 */

+(instancetype)getSingleClass{

    

    staticMJ_HttpManager * shareManager = nil;

    staticdispatch_once_t predicate;

    dispatch_once(&predicate, ^{

       

        shareManager =[[MJ_HttpManageralloc]init];

    });

    return shareManager;

}

-(AFHTTPRequestOperationManager *)shareClient{

    

    if (_shareClient ==nil) {

        

        _shareClient = [[AFHTTPRequestOperationManageralloc]initWithBaseURL:[NSURLURLWithString:LoginUrl]];

        [_shareClient.requestSerializersetTimeoutInterval:10.f];//超时 10请求

        [_shareClient.requestSerializerwillChangeValueForKey:@"timeoutInterval"];

        [_shareClient.requestSerializerdidChangeValueForKey:@"timeoutInterval"];

        _shareClient.requestSerializer = [AFJSONRequestSerializerserializer];

        _shareClient.responseSerializer = [AFJSONResponseSerializerserializer];

        _shareClient.responseSerializer.acceptableContentTypes = [NSSetsetWithObjects:@"text/plain",@"application/json",@"text/json",@"text/html", nil];

     

        

//        _shareClient.securityPolicy.SSLPinningMode = AFSSLPinningModeCertificate ;

         AFSecurityPolicy *policy = [AFSecurityPolicypolicyWithPinningMode:AFSSLPinningModeCertificate];

        _shareClient.securityPolicy = policy;

        // 2.设置证书模式

        NSString * cerPath = [[NSBundlemainBundle] pathForResource:@"menjin"ofType:@"cer"];

        NSData * cerData = [NSDatadataWithContentsOfFile:cerPath];

        _shareClient.securityPolicy.pinnedCertificates = [[NSArrayalloc] initWithObjects:cerData,nil];

        // 客户端是否信任非法证书

        _shareClient.securityPolicy.allowInvalidCertificates =YES;

        // 是否在证书域字段中验证域名

        [_shareClient.securityPolicysetValidatesDomainName:NO];

        

    }

    return_shareClient;

}

//如果想要获得单例类的某个属性

 MJ_HttpManager * http = [MJ_HttpManagergetSingleClass];

 http.shareClient =nil;