带外部URL的AVAudioPlayer去* .m4p

Question

我的问题如下。我得到这个代码，我猜腐败NSURL因为AVAudioPlayer是零初始化后：

NSString *dummyURLString = @"http://a825.phobos.apple.com/us/r2000/005/Music/d8/a8/d2/mzi.jelhjoev.aac.p.m4p"; 
NSError *error; 
NSURL *url = [NSURL URLWithString:dummyURLString]; 
AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; 
[player play]; 

任何建议是怎么回事错在这里？

的&错误表明这一点：

Error Domain=NSOSStatusErrorDomain Code=-43 "Operation could not be completed. (OSStatus error -43.)" 

Answer 1

我尝试这样做第一，但遇到错误2003334207：

NSData *soundData = [NSData dataWithContentsOfURL:URL]; 
AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithData:soundData error:&error]; 

似乎AVAudioPlayer真正想要的文件。所以我首先将数据放入文件中：

NSURL *url = [NSURL URLWithString:@"http://a825.phobos.apple.com/us/r2000/005/Music/d8/a8/d2/mzi.jelhjoev.aac.p.m4p"]; 
NSData *soundData = [NSData dataWithContentsOfURL:url]; 
NSString *filePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, 
         NSUserDomainMask, YES) objectAtIndex:0] 
         stringByAppendingPathComponent:@"sound.caf"]; 
[soundData writeToFile:filePath atomically:YES]; 
player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL 
       fileURLWithPath:filePath] error:NULL]; 
NSLog(@"error %@", error); 

Answer 2

AVAudioPlayer仅适用于本地URL的作品。它必须是一个文件URL（文件：//）

见Apple's Technical Q&A QA1634

Answer 3

而不是使用AVAudioPlayer，您可以使用AVPlayer。 AVPlayer也适用于远程URL