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在文本框中，我输入一个 url 并将其下载到特定路径并存储该下载文件，我必须在之前提供该文件的特定位置和文件名。这是有效的，但是当我下载任何其他格式（例如 .mp4， .avi) 它将存储为 .mp3

NSString * URL =Textbox.text;
dest_path=[NSHomeDirectory() stringByAppending:@"/Documents/file.mp3"];
//to download url and save to specific path
download=[Downloader Download:URL withTargetPath:dest_path withDelagate:self];

我希望每当我下载它应该从那里保存格式。如果我下载 .mp4 文件。它应该用 .mp4 格式保存。请建议一些代码..

4

1 回答 1

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 NSURL *url=[NSURL URLWithString:@"/Documents/file.mp3"];



    NSURLRequest *req=[NSURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:120];

    NSURLConnection *con=[[NSURLConnection alloc] initWithRequest:req delegate:self startImmediately:YES];

    if(con){
        receivedData = [NSMutableData data] ;
    } else {

    }

利用 ：

NSURLConnectionDataDelegate,NSURLConnectionDelegate

方法

喜欢 ：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d{}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {}
于 2012-10-01T06:39:19.310 回答