ios - 如何在 AFImageRequestOperation 中设置超时值

Question

我在从服务器下载图像数组时遇到问题，如果我在服务器上有 100 张图像意味着我应该使用“AFImageRequestOperation”下载所有图像，在下载过程中一些图像已成功下载但许多图像由于“服务器超时”错误，我面临大尺寸图像 (3.mb) 的超时问题，

我使用以下方式下载图片:

NSURL *url = [NSURL URLWithString:kBaseURLString];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
[httpClient setAuthorizationHeaderWithUsername:[[NSUserDefaults standardUserDefaults] stringForKey:kUserDefaultKeyUsername]
                                      password:[[NSUserDefaults standardUserDefaults] stringForKey:kUserDefaultKeyPassword]];

for( int i = 0; i < [self.downloadImageList count]; i++ ) {

    NSString *filename = [[NSString alloc] initWithString:[self.downloadImageList objectAtIndex:i]];
    NSMutableURLRequest *urlRequest = [httpClient multipartFormRequestWithMethod:@"POST"
                                                                            path:@"/xxx/yyyyyyyyyy/getImage"
                                                                      parameters:nil
                                                       constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {

                                                           [formData appendPartWithFormData:[filename dataUsingEncoding:NSUTF8StringEncoding]
                                                                                       name:kFormNameFile];

                                                       }];

    AFImageRequestOperation *requestOperation = [[AFImageRequestOperation alloc] initWithRequest:urlRequest];
    [requestOperation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {

        [self updateSyncClientUIDelegateProgress:(totalBytesRead/totalBytesExpectedToRead) andLabel:@"Downloading Images"];
    }];

    [requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {


        if( [[urlRequest URL] isEqual:[[operation request] URL]] ) {

            dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                UIImage *image = responseObject;
                NSLog(@"Downloading  image %@",image);

                [UIImagePNGRepresentation(image) writeToFile:[syncedImagesPath stringByAppendingPathComponent:filename] atomically:YES];
            });

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

        if( [[operation response] statusCode] == 404 ) {
            return;
        }
        NSLog(@"failure BLOCK %@",error);
        NSLog(@"failure error code %ld",(long)[error code]);



        if( [error code] != NSURLErrorCannotDecodeContentData ) {

            [self cancelSyncFromFailure];
        }

    }];

请帮我解决这个下载大图片时超时的问题

Answer 1

现在这是我正在使用并且工作正常的解决方案。首先它还向我发送了“请求超时”消息，但不是现在。试试这个

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:photourl] cachePolicy:NSURLCacheStorageAllowed timeoutInterval:10000];

AFImageRequestOperation *requestOperation = [[AFImageRequestOperation alloc] initWithRequest:urlRequest];
    [requestOperation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {

     ...... YOUR CODE
}];