Question

我正在使用AFNetworking并且可以成功下载文件。

在下载结束时，它不会出现在我设置的目录中。

我做了一些搜索，并在这里发现了一些问题，建议我使用：

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

但是这出现了一个错误，据我所知，在他们的文档中没有提到。

错误是：

/ Users / Jeff / Documents / Dropbox-01 / Dropbox / Xcode Projects / Try Outs - JEFF / testDownload / testDownload / JWKDownloadViewController.m:177:10：'AFURLConnectionOperation'没有可见的@interface声明选择器'setCompletionBlockWithSuccess：故障：

我需要使用更新的行???

Answer 1

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"..."]];
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"filename"];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Successfully downloaded file to %@", path);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

[operation start];

Answer 2

是确保您使用了NSOutputStream

的正确路径

添加：

[_operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"Successfully downloaded file");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
  NSLog(@"Error: %@", error);
}];
[_operation start];

AFNetworking - 保存下载的文件

2 个答案: