AVAudioPlayer不播放文件夾內的歌曲嗎？

Question

我使用此代碼來播放歌曲，它不會播放除文檔目錄以外的文件夾或文件夾內的歌曲。

NSString *songname=[NSString stringWithFormat:@"%@",songArray[songIndex]]; 
NSLog(@"songname:%@",songname); 

NSString* saveFileName = songname; 

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; 
NSString *path = [documentsDirectory stringByAppendingPathComponent:saveFileName]; 
NSURL *url = [[NSURL alloc] initFileURLWithPath: path]; 
self.audioPlayer=[[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL]; 

Answer 1

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; 
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"github.mp4"]; 
NSURL *url1 = [[NSURL alloc] initFileURLWithPath: path]; 
avPlayer = [AVPlayer playerWithURL:url1] ; 
[self.avplayer play];