小编Ale*_*him的帖子

如何从AFNetworking 3.x中的故障块获取响应字符串,

在2.x版本中,这样做的方法是:

[manager GET:path parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSDictionary *dictionary_FetchResult = responseObject;
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSDictionary *dictionary_FetchResult = operation.responseObject;
}];

但是在3.x版本中,返回块的参数中没有操作,如下所示:

[manager POST:path parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    NSDictionary *dictionary_FetchResult = responseObject;
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    NSLog(@"Error: %@", error);
}];

所以我希望有人能够做到这一点.

我实现了MPMediaPickerController

- (IBAction)pickSong:(id)sender {
    MPMediaPickerController *picker =
    [[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeMusic];

    picker.delegate                     = self;
    picker.allowsPickingMultipleItems   = NO;
    picker.prompt                       = NSLocalizedString (@"Select any song from the list", @"Prompt to user to choose some songs to play");
    picker.showsCloudItems = YES;

    [self presentModalViewController: picker animated: YES];
}
- (void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) mediaItemCollection
{
    [self dismissModalViewControllerAnimated: YES];
    if (mediaItemCollection.count > 0) {
        MPMediaItem *mediaItem = [mediaItemCollection.items objectAtIndex:0];
        NSLog(@"%@ - %@, %@", [mediaItem valueForProperty:MPMediaItemPropertyTitle], [mediaItem valueForProperty:MPMediaItemPropertyArtist], [mediaItem valueForProperty:MPMediaItemPropertyAssetURL]);


        self.fileURL = …

我在我的Mac上下载了Xcode 7,但似乎iOS 9模拟器没有互联网连接,我尝试了"重置内容和设置",我重新启动了模拟器和Xcode,但它似乎不起作用,

有解决方案吗 谢谢