我们在Xamarin.Forms.iOSproject中使用第三方音频/视频SDK。现在的问题是,默认情况下,音频处于扬声器模式,而不是耳罩模式。我在下面找到了代码,使用该音频正在打开耳机和扬声器。但是当我在扬声器上时,麦克风被静音,当我在耳机扬声器中时,两者都在工作。所以我的问题是如何在这两种情况下启用麦克风?
bool blIsOnEarSpeaker=false;
public void SetAudioSettingsForIOS()
{
var session=AVFoundation.AVAudioSession.SharedInstance();
AVFoundation.AVAudioSessionCategory objCategory= AVFoundation.AVAudioSessionCategory.Playback;
Foundation.NSError error = null;
if (blIsOnEarSpeaker==false)
{
objCategory=AVFoundation.AVAudioSessionCategory.PlayAndRecord;
blIsOnEarSpeaker=true;
error = session.SetCategory(objCategory);
}
else
{
objCategory=AVFoundation.AVAudioSessionCategory.Playback;
blIsOnEarSpeaker=false;
error = session.SetCategory(
objCategory
,AVFoundation.AVAudioSessionCategoryOptions.DefaultToSpeaker
);
}
error = session.SetActive(true);
}
在 else 条件下:
改变
**objCategory=AVFoundation.AVAudioSessionCategory.Playback;**
自
**objCategory=AVFoundation.AVAudioSessionCategory.PlayAndRecord;**
或者更好的方法是,在if/else条件之前使用此行:
bool blIsOnEarSpeaker=false;
public void SetAudioSettingsForIOS()
{
var session=AVFoundation.AVAudioSession.SharedInstance();
AVFoundation.AVAudioSessionCategory objCategory= AVFoundation.AVAudioSessionCategory.Playback;
Foundation.NSError error = null;
objCategory=AVFoundation.AVAudioSessionCategory.PlayAndRecord;
if (blIsOnEarSpeaker==false)
{
blIsOnEarSpeaker=true;
error = session.SetCategory(objCategory);
}
else
{
blIsOnEarSpeaker=false;
error = session.SetCategory(
objCategory
,AVFoundation.AVAudioSessionCategoryOptions.DefaultToSpeaker
);
}
error = session.SetActive(true);
}