ios - AFNetworking 2.0 队列请求在设备离线时使用 setReachabilityStatusChangeBlock 不执行任何操作

Question

我一直在尝试想出一个解决方案，在设备离线时使用 AFNetworking 对 HTTP 请求进行排队，这样当它重新在线时，请求就会完成。据我所知，这可以设置 setReachabilityStatusChangeBlock: 参数。

到目前为止，这是我所拥有的:

// ViewController.h
@interface XYZTicketViewController : UIViewController<NSURLConnectionDelegate> // This is from before I started using AFNetworking, I'm intending to change all the requests to use AFNetworking in the near future.   
@end 


// ViewController.m
(...)
#import <AFHTTPRequestOperationManager.h>
#import <AFNetworkReachabilityManager.h>
(...)
@interface XYZTicketViewController ()
- (void)viewDidLoad
(...)
{
NSURL *baseURL = [NSURL URLWithString:@"http://54.213.167.202"];
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];

NSOperationQueue *operationQueue = manager.operationQueue;
[manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    switch (status) {
        case AFNetworkReachabilityStatusReachableViaWWAN:
        case AFNetworkReachabilityStatusReachableViaWiFi:
            [operationQueue setSuspended:NO];
            NSLog(@"WIFI");
            break;
        case AFNetworkReachabilityStatusNotReachable:
        default:
            [operationQueue setSuspended:YES];
            NSLog(@"oflline, baby");
            break;
    }
}];

NSDictionary *parameters = @{@"action": @"login", @"user": @"mail.address@gmail.com", @"pass": @"howdoyouturnthison"};
[manager GET:@"http://54.213.167.202/api.php"  parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];
(...)
}

我找不到任何示例，但我阅读了 here这是可能的，但到目前为止，当在线状态发生变化时，任何事情都会发生。

希望你能帮帮我

Answer 1

在调用 setReachabilityStatusChangeBlock 之前，您需要先调用 startMonitoring

[manager.reachabilityManager startMonitoring];

如果您使用的是 AFNetworking 2.0，我建议您执行以下操作:

[[AFNetworkReachabilityManager sharedManager] startMonitoring];
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    DLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
    switch (status) {
        case AFNetworkReachabilityStatusReachableViaWWAN:
        case AFNetworkReachabilityStatusReachableViaWiFi:
            [operationQueue setSuspended:NO];
            NSLog(@"WIFI");
            break;
        case AFNetworkReachabilityStatusNotReachable:
        default:
            [operationQueue setSuspended:YES];
            NSLog(@"offline, baby");
            break;
    }
}];