Android开启关闭手机扬声器

 /**     * 当前音量     */    private static int currVolume = 0;    private AudioManager audioManager;

@Overridepublic void openSpeaker() {    try {        if (audioManager == null) {            audioManager = ((AudioManager) getSystemService(AUDIO_SERVICE));        }        // 获取当前通话音量        currVolume = audioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL);        if (!audioManager.isSpeakerphoneOn()) {            audioManager.setSpeakerphoneOn(true);            audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL,                    audioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL),                    AudioManager.STREAM_VOICE_CALL);        }    } catch (Exception e) {        e.printStackTrace();    }    ToastUtil.showToast( "打开扬声器");}

    @Override    public void closeSpeaker() {        try {            if (audioManager == null) {                audioManager = ((AudioManager) getSystemService(AUDIO_SERVICE));            }            if (audioManager.isSpeakerphoneOn()) {                audioManager.setSpeakerphoneOn(false);                audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, currVolume,AudioManager.STREAM_VOICE_CALL);            }        } catch (Exception e) {            e.printStackTrace();        }        ToastUtil.showToast( "关闭扬声器");    }

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