在我的项目中,我使用AVAudioSession
来检测是否已插入或拔下任何耳机。但在这种情况下,我无法检测何时插入蓝牙设备。这是我的耳机状态代码。
- (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];
}
那么如何检测蓝牙耳机是否插入iOS 8?
答案 0 :(得分:12)
您可以检测当前活动的蓝牙输出设备(而不是输入设备)
Swift Code:
import AVFoundation
func bluetoothAudioConnected() -> Bool{
let outputs = AVAudioSession.sharedInstance().currentRoute.outputs
for output in outputs{
if output.portType == AVAudioSessionPortBluetoothA2DP || output.portType == AVAudioSessionPortBluetoothHFP || output.portType == AVAudioSessionPortBluetoothLE{
return true
}
}
return false
}
蓝牙设备基于以下问题:What's the difference among AVAudioSessionPortBluetoothHFP, A2DP and LE?
我希望它有助于某人
答案 1 :(得分:2)
我能够使用以下方法检测当前是否连接了蓝牙耳机(HFP)设备:
NSArray *arrayInputs = [[AVAudioSession sharedInstance] availableInputs];
for (AVAudioSessionPortDescription *port in arrayInputs)
{
if ([port.portType isEqualToString:AVAudioSessionPortBluetoothHFP])
{
bHas = YES;
break;
}
}
但是,您的AVAudioSession类别必须设置为AVAudioSessionCategoryPlayAndRecord才能使其正常工作。如果不是,即使连接了HFP设备,端口也不会显示在列表中。
答案 2 :(得分:0)
您可以通过 routeChangeNotification 对其进行检测:
func activateHeadPhonesStatus(){
NotificationCenter.default.addObserver(self, selector: #selector(audioRouteChangeListener(_:)), name: AVAudioSession.routeChangeNotification, object: nil)
}
@objc func audioRouteChangeListener(_ notification:Notification) {
guard let userInfo = notification.userInfo,
let reasonValue = userInfo[AVAudioSessionRouteChangeReasonKey] as? UInt,
let reason = AVAudioSession.RouteChangeReason(rawValue:reasonValue) else {
return
}
if reason == .newDeviceAvailable {
let session = AVAudioSession.sharedInstance()
for output in session.currentRoute.outputs where output.portType == AVAudioSession.Port.bluetoothA2DP {
print("Bluetooth Headphone Connected")
break
}
}
}