ios - 始终启用扬声器并在耳机扬声器上正常工作？

Question

UInt32 audioRouteOverride = enabled ? kAudioSessionOverrideAudioRoute_Speaker : kAudioSessionOverrideAudioRoute_None;

if(AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute, sizeof (audioRouteOverride),&audioRouteOverride) == 0){
    speakerOn = enabled;
    return YES;
}