Ios 无法追踪的网络内存泄漏

TL；DR：自己克隆并检查泄漏

我有一个处理所有网络的类。它被称为

ResponseOrganizer

，其中有一个类方法：

+ (void)getSth:(void (^)(NSURLSessionDataTask *operation, NSArray *locales, id plainObject))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {

    Connection *connection = [Connection new];
    connection.urlString = @"http://sample-file.bazadanni.com/download/txt/json/sample.json";
    connection.requestMethodType = GET;

    [connection fireWithSuccess:^(NSURLSessionDataTask *operation, NSArray *returnArray, id originalResponse) {
        success(operation, returnArray, originalResponse);
    } failure:^(NSURLSessionDataTask *operation, NSError *error) {
        failure(operation, error);
    }];
}

其中，

Connection

是单个“我的内部连接”对象：

以下是实施方案：

#import "Connection.h"

@interface Connection()
@property (weak,nonatomic) AFHTTPSessionManager *manager;
@end

@implementation Connection

#pragma mark - Connection groundwork

-(void)fireWithSuccess:(void (^)(NSURLSessionDataTask *operation, NSArray* returnArray, id originalResponse))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {

    self.manager = [AFHTTPSessionManager manager];
    [self.manager urlString:self.urlString withMethod:self.requestMethodType parameters:self.paramaters success:^(NSURLSessionDataTask *operation, id responseObject) {
        success(operation,@[responseObject],nil);
    } failure:^(NSURLSessionDataTask *operation, NSError *error) {
        failure(operation,error);
    }];
}

@end

我在

AFNetworking

中有一个category calling right方法。要简化它，请如下所示：

-(void)urlString:(NSString*)urlString withMethod:(RequestMethodType)method parameters:(NSDictionary*)parameters success:(void (^)(NSURLSessionDataTask *operation, id responseObject))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {
    switch (method) {
        case GET: {
            [self getWithURLString:urlString parameters:parameters success:^(NSURLSessionDataTask *operation, id responseObject) {
                success(operation,responseObject);
            } failure:^(NSURLSessionDataTask *operation, NSError *error) {
                failure(operation,error);
            }];
            break;
        }
}

[ResponseOrginizer getSth:^(NSURLSessionDataTask *operation, NSArray *locales, id plainObject) {

} failure:^(NSURLSessionDataTask *operation, NSError *error) {

}];

例如，当我想在我的ViewController中发出请求时，我会这样做：

-(void)urlString:(NSString*)urlString withMethod:(RequestMethodType)method parameters:(NSDictionary*)parameters success:(void (^)(NSURLSessionDataTask *operation, id responseObject))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {
    switch (method) {
        case GET: {
            [self getWithURLString:urlString parameters:parameters success:^(NSURLSessionDataTask *operation, id responseObject) {
                success(operation,responseObject);
            } failure:^(NSURLSessionDataTask *operation, NSError *error) {
                failure(operation,error);
            }];
            break;
        }
}

[ResponseOrginizer getSth:^(NSURLSessionDataTask *operation, NSArray *locales, id plainObject) {

} failure:^(NSURLSessionDataTask *operation, NSError *error) {

}];

当我在仪器中运行它时，我总是得到：

它在这里并不重要，它会落在成功/失败块上，它总是导致泄漏。我从中提取所有内容，并将其尽可能简单地放在github上。Github链接：

泄漏出现在此处：

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

原因似乎与前面讨论的相同（或类似）-NSURLSession保留对委托的引用

按如下方式更改

Connection.m中的代码以避免泄漏：

-(void)fireWithSuccess:(void (^)(NSURLSessionDataTask *operation, NSArray* returnArray, id originalResponse))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {
    AFHTTPSessionManager *manager = [Connection manager];

    [manager urlString:self.urlString withMethod:self.requestMethodType parameters:self.paramaters success:^(NSURLSessionDataTask *operation, id responseObject) {
        success(operation,@[responseObject],nil);
    } failure:^(NSURLSessionDataTask *operation, NSError *error) {
        failure(operation,error);
    }];
}

+ (AFHTTPSessionManager*) manager
{
    static dispatch_once_t onceToken;
    static AFHTTPSessionManager *manager = nil;
    dispatch_once(&onceToken, ^{
        manager = [AFHTTPSessionManager manager];
    });

    return manager;
}

如果您需要处理多个会话，您可以使用另一种方法：完成会话时调用
-[AFHTTPSessionManager invalidateSessionCancelingTasks:
，例如：

-(void)fireWithSuccess:(void (^)(NSURLSessionDataTask *operation, NSArray* returnArray, id originalResponse))success failure:(void (^)(NSURLSessionDataTask *operation, NSError *error))failure {
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    [manager urlString:self.urlString withMethod:self.requestMethodType parameters:self.paramaters success:^(NSURLSessionDataTask *operation, id responseObject) {
        success(operation,@[responseObject],nil);
        [manager invalidateSessionCancelingTasks:YES];
    } failure:^(NSURLSessionDataTask *operation, NSError *error) {
        failure(operation,error);
        [manager invalidateSessionCancelingTasks:YES];
    }];
}

（注意：如果要取消挂起的任务，请通过
YES
，否则通过
NO
。
为什么选择Singleton？当我在AFHTTPSessionManager上同时启动两个连接时会发生什么情况？谢谢，
[manager invalidateSessionCancelingTasks:YES]
works+（AFHTTPSessionManager*）manager{static dispatch_once\u t onceToken；static AFHTTPSessionManager*manager=nil；dispatch_once（&onceToken，^{manager=[AFHTTPSessionManager]；}）；return manager；}有人能用swift提供此代码吗？