()) { // Adjust output for Bluetooth. } else if (isSpeakerphoneOn()) { // Adjust output for Speakerphone
stat_sys_headset stat_sys_phone_call stat_sys_phone_call_forward stat_sys_phone_call_on_hold stat_sys_speakerphone
android.media.action.MICROPHONE_MUTE_CHANGED" /> <protected-broadcast android:name="android.media.action.<em>SPEAKERPHONE</em>_STATE_CHANGED
/// ROUTE_SPEAKERPHONE 3:音频路由为设备自带的扬声器。