AVPlayer got the metadata but not playing - objective-c

Question

I'm trying to do a very simple application, the purpose is listening an audio stream (AAC 64 kbps). To do so I'm using AVPlayer from the Apple AVFoundation has follow :
ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize playerItem, player;
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void) viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
playerItem = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:#"http://stream.myjungly.fr/MYJUNGLY2"]];
[playerItem addObserver:self forKeyPath:#"timedMetadata" options:NSKeyValueObservingOptionNew context:nil];
player = [AVPlayer playerWithPlayerItem:playerItem];
[player play];
NSLog(#"player item error : %#", playerItem.error.description);
NSLog(#"player error : %#", player.error.description);
}
- (void) observeValueForKeyPath:(NSString*)keyPath ofObject:(id)object
change:(NSDictionary*)change context:(void*)context {
if ([keyPath isEqualToString:#"timedMetadata"])
{
AVPlayerItem* _playerItem = object;
for (AVMetadataItem* metadata in _playerItem.timedMetadata)
{
NSLog(#"\nkey: %#\nkeySpace: %#\ncommonKey: %#\nvalue: %#", [metadata.key description], metadata.keySpace, metadata.commonKey, metadata.stringValue);
}
}
}
#end
My object player and playerItem are strong properties :
ViewController.h
#interface ViewController : UIViewController
#property (nonatomic, strong) AVPlayerItem* playerItem;
#property (nonatomic, strong) AVPlayer* player;
#end
The Key Value Observer is working great, here is my log :
2013-05-14 11:18:03.725 MusicAvPlayer[6494:907] player item error : (null)
2013-05-14 11:18:03.728 MusicAvPlayer[6494:907] player error : (null)
2013-05-14 11:18:08.140 MusicAvPlayer[6494:907]
key: title
keySpace: comn
commonKey: title
value: Alabama Shakes - Be Mine
But the audio is not played, I've go no sound ! Any idea why ?
EDIT: I already look at this questions :
No sound coming from AVPlayer
AVAudioPlayer, No Sound
AVAudioPlayer not playing any sound
That's why I'm using a strong property, so I guess my problem is not ARC related

Answer 1

I found problem : the iphone was in silent mode ... so no sound can go out on the speaker, the the sound was played when I was using the head phone.
But I've got a new question now : how can you play sound on the speaker when the phone is in silent mode ? (like the official Music application)
EDIT : ... and the answer is there :
Play sound on iPhone even in silent mode

Answer 2

// Init PlayerItem
playerItem = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:#"http://stream.myjungly.fr/MYJUNGLY2"]];
// Init Player Obj
player = [AVPlayer playerWithPlayerItem:playerItem];
// Add objserver on Player
[player addObserver:self forKeyPath:#"status" options:0 context:nil];
Add Observer Method your Class
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context {
if (object == player && [keyPath isEqualToString:#"status"]) {
if (player.status == AVPlayerStatusReadyToPlay) {
// Start playing...
[player play];
} else if (player.status == AVPlayerStatusFailed) {
// something went wrong. player.error should contain some information
}
}
if ([keyPath isEqualToString:#"timedMetadata"])
{
AVPlayerItem* _playerItem = object;
for (AVMetadataItem* metadata in _playerItem.timedMetadata)
{
NSLog(#"\nkey: %#\nkeySpace: %#\ncommonKey: %#\nvalue: %#", [metadata.key description], metadata.keySpace, metadata.commonKey, metadata.stringValue);
}
}
}