Wie erkenne ich, ob ein Bluetooth-Headset eingesteckt ist oder nicht?
In meinem Projekt benutze ichAVAudioSession
, um festzustellen, ob ein Kopfhörer eingesteckt oder ausgesteckt ist. In diesem Fall kann ich jedoch nicht erkennen, ob ein Bluetooth-Gerät angeschlossen ist. Hier ist mein Code für den Kopfhörer-Status.
- (void)audioRouteChangeListenerCallback:(NSNotification*)notification
{
NSDictionary *interuptionDict = notification.userInfo;
NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
switch (routeChangeReason) {
case AVAudioSessionRouteChangeReasonNewDeviceAvailable:
//NSLog(@"AVAudioSessionRouteChangeReasonNewDeviceAvailable");
NSLog(@"Headphone/Line plugged in");
[_soundButtonOutlet setImage:[UIImage imageNamed:@"sound-on.png"] forState:UIControlStateNormal];
_headSetState=YES;
break;
case AVAudioSessionRouteChangeReasonOldDeviceUnavailable:
NSLog(@"AVAudioSessionRouteChangeReasonOldDeviceUnavailable");
NSLog(@"Headphone/Line was pulled. Stopping player....");
[_soundButtonOutlet setImage:[UIImage imageNamed:@"sound-off.png"] forState:UIControlStateNormal];
if(_isPlaying==YES)
{
[self.player pause];
[_audioButtonOutlet setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
_isPlaying=NO;
}
_headSetState=NO;
break;
case AVAudioSessionRouteChangeReasonCategoryChange:
// called at start - also when other audio wants to play
NSLog(@"AVAudioSessionRouteChangeReasonCategoryChange");
break;
}
- (BOOL)isHeadsetPluggedIn
{
AVAudioSessionRouteDescription* route = [[AVAudioSession sharedInstance] currentRoute];
for (AVAudioSessionPortDescription* desc in [route outputs]) {
if ([[desc portType] isEqualToString:AVAudioSessionPortHeadphones])
{
[_soundButtonOutlet setImage:[UIImage imageNamed:@"sound-on.png"] forState:UIControlStateNormal];
_headSetState=YES;
return YES;
}
else
{
[_soundButtonOutlet setImage:[UIImage imageNamed:@"sound-off.png"] forState:UIControlStateNormal];
_headSetState=NO;
return NO;
}
}
return NO;
}
}
- viewWillAppear {
[AVAudioSession sharedInstance];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioRouteChangeListenerCallback:) name:AVAudioSessionRouteChangeNotification object:nil];
[self isHeadsetPluggedIn];
}
Wie kann ich feststellen, ob ein Bluetooth-Headset mit iOS 8 verbunden ist oder nicht?