[英]How to switch between audio input source(Bluetooth, BuiltIn Microphone) using AVFoundation
我目前在内置麦克风和蓝牙麦克风、iOS8 之间切换音频输入源时遇到问题
我试图找到在线解决方案,但一无所获:(
任何人,请建议我正确的方法来实现。
期待您的帮助!
我有这个代码。
bluetoothInput 只是一个布尔值,用于在蓝牙麦克风和普通麦克风之间切换。
-(void) changeBluetoothInput{
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))
{
if(self.bluetoothInput){
//[[AVAudioSession sharedInstance] setActive:NO error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
AVAudioSessionPortDescription* _bluetoothPort = [self bluetoothAudioDevice];
[[AVAudioSession sharedInstance] setPreferredInput:_bluetoothPort
error:nil];
}else{
//[[AVAudioSession sharedInstance] setActive:NO error:nil];
//[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
AVAudioSessionPortDescription* _bluetoothPort = [self normalAudioDevice];
[[AVAudioSession sharedInstance] setPreferredInput:_bluetoothPort
error:nil];
}
}
}
- (AVAudioSessionPortDescription*)bluetoothAudioDevice
{
NSArray* bluetoothRoutes = @[AVAudioSessionPortBluetoothA2DP, AVAudioSessionPortBluetoothLE, AVAudioSessionPortBluetoothHFP];
return [self audioDeviceFromTypes:bluetoothRoutes];
}
- (AVAudioSessionPortDescription*)normalAudioDevice
{
NSArray* bluetoothRoutes = @[AVAudioSessionPortBuiltInMic];
return [self audioDeviceFromTypes:bluetoothRoutes];
}
- (AVAudioSessionPortDescription*)audioDeviceFromTypes:(NSArray*)types
{
NSArray* routes = [[AVAudioSession sharedInstance] availableInputs];
for (AVAudioSessionPortDescription* route in routes)
{
if ([types containsObject:route.portType])
{
return route;
}
}
return nil;
}
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