ios - URL 作为 Xcode 中的字符串和值

Question

我正在开发一个网络服务应用程序，我有一个问题。我正在使用以下代码调用特定的 Url 站点:

NSURL *Url = [NSURL URLWithString:[requestStream stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

NSString *htmlString = [NSString stringWithContentsOfURL:Url encoding:NSUTF8StringEncoding error:&error];

然后我创建一个 nsstring 并使用 NSLog 打印它，我得到以下结果:

2014-05-14 15:50:58.118 jsonTest[1541:907] Data : Array
(
    [url] => http://sheetmusicdb.net:8000/hnInKleinenGruppen
    [encoding] => MP3
    [callsign] => SheetMusicDB.net - J
    [websiteurl] => 
)

我的问题是如何解析 URL 链接，然后将其用作值？我试图将它们放入数组或字典中，但出现错误。因此，如果有人可以帮助我，我将不胜感激。

好的，我设法通过以下代码获取了链接:

if(htmlString) {
    //NSLog(@"HTML %@", htmlString);

    NSRange r = [htmlString rangeOfString:@"=>"];
    if (r.location != NSNotFound) {
        NSRange r1 = [htmlString rangeOfString:@"[encoding]"];
        if (r1.location != NSNotFound) {
            if (r1.location > r.location) {
                _streamTitle = [htmlString substringWithRange:NSMakeRange(NSMaxRange(r), r1.location - NSMaxRange(r))];
                NSLog(@"Title %@", _streamTitle);
            }
        }
    }
} else {
    NSLog(@"Error %@", error);
}

感谢您的建议。我现在的问题是，我将字符串传递给 avplayer，但我听不到音乐。

Answer 1

我想这对你有帮助..

// @property (nonatomic,retain) NSMutableData *responseData;
// @synthesize responseData;

NSString *urlString=@"http:your urls";
self.responseData=[NSMutableData data];
NSURLConnection *connection=[[NSURLConnection alloc]initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlString]] delegate:self];
NSLog(@"connection====%@",connection);

JSON 委托(delegate):

 -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
 {
   [self.responseData setLength:0];
 }
 -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
 {
    [self.responseData appendData:data];
 }
 -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
 {
    self.responseData=nil;
 }
 -(void)connectionDidFinishLoading:(NSURLConnection *)connection
 {
      NSArray *response_Array = [NSJSONSerialization JSONObjectWithData:self.responseData options:kNilOptions error:nil];

  //  Write code for retrieve data according to your Key.
 }