Android学习之工具类一：系统声音模式设置工具类

权限：<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

import android.app.Activity;import android.content.Context;import android.media.AudioManager;/** * 系统声音模式设置工具类 * * @author linzhiyong * @time 2017年1月9日15:30:47 * @email wflinzhiyong@163.com * @desc */public class AudioManagerUtil {    PRivate Context context;    private AudioManager audioManager;    public AudioManagerUtil(Context context) {        this.context = context;        this.audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);    }    /**     * 设置是否使用扬声器     * @param on     */    public void setSpeakerphoneOn(boolean on) {        if (on) {            if (this.audioManager.isSpeakerphoneOn()) {                return;            }            this.audioManager.setSpeakerphoneOn(true);        } else {            this.audioManager.setSpeakerphoneOn(false);//关闭扬声器            this.audioManager.setRouting(AudioManager.MODE_NORMAL, AudioManager.ROUTE_EARPIECE, AudioManager.ROUTE_ALL);            ((Activity) context).setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);            //把声音设定成Earpiece（听筒）出来，设定为正在通话中            this.audioManager.setMode(AudioManager.MODE_IN_CALL);        }    }    /**     * 是否是扬声器模式     * @return     */    public boolean isSpeakerphoneOn() {        return this.audioManager.isSpeakerphoneOn();    }    /**     * 设置静音 true: 静音  false: 正常     * @param on     */    public void setSilentOn(boolean on) {        if (on) {            if (this.audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT) {                return;            }            this.audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT);        } else {            this.audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);//            this.audioManager.setStreamVolume(AudioManager.RINGER_MODE_NORMAL, ringerVolume, 0);        }    }    /**     * 是否是静音模式     * @return     */    public boolean isSlientOn() {        return this.audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT                || this.audioManager.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE;    }}