Android(Java):音量调节

设置音量的方法也很简单,AudioManager提供了方法:
  publicvoidsetStreamVolume(intstreamType,intindex,intflags)其中streamType有内置的常量,去文档里面就可以看到。

JAVA代码:
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

//通话音量

int max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_VOICE_CALL );
int current = mAudioManager.getStreamVolume( AudioManager.STREAM_VOICE_CALL );
Log.d(“VIOCE_CALL”, “max : ” + max + ” current : ” + current);

//系统音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_SYSTEM );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_SYSTEM );
Log.d(“SYSTEM”, “max : ” + max + ” current : ” + current);

//铃声音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_RING );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_RING );
Log.d(“RING”, “max : ” + max + ” current : ” + current);

//音乐音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_MUSIC );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_MUSIC );
Log.d(“MUSIC”, “max : ” + max + ” current : ” + current);

//提示声音音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_ALARM );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_ALARM );
Log.d(“ALARM”, “max : ” + max + ” current : ” + current);
ps:
  游戏过程中只允许调整多媒体音量,而不允许调整通话音量。
  setVolumeControlStream(AudioManager.STREAM_MUSIC);
  长时间不动,不允许黑屏,View.setKeepScreenOn(true);
  估计manifest文件中需要注册权限吧

 

a、通过系统服务获得声音管理器:

AudioManager audioManager =  (AudioManager)getSystemService(Service.AUDIO_SERVICE);

b、根据实际需要调用适当的方法:(常用方法)

audioManager.adjustStreamVolume(int streamType, int  direction, int flags);

streamType:声音类型,可取的为STREAM_VOICE_CALL(打电话时的声音), STREAM_SYSTEM(Android系统声音), STREAM_RING(电话铃响), STREAM_MUSIC(音乐声音) or STREAM_ALARM(警告声音)。

direction:调整音量的方向,可取为ADJUST_LOWER(调低音量), ADJUST_RAISE(调高音量), or ADJUST_SAME(保持先前音量)。

flags:可选标志位(如要显示出音量调节UI,使用如下flag:AudioManager.FLAG_SHOW_UI)。

audioManager.setStreamMute(int streamType, boolean state);设置指定声音类型(streamType)是否为静音。如果state为true,则设置为静音;否则,不设置为静音。

audioManager.setRingerMode(int ringerMode);

设置铃音模式,可取值为RINGER_MODE_NORMAL(铃音正常模式), RINGER_MODE_SILENT(铃音静音模式), or RINGER_MODE_VIBRATE(铃音震动模式,即铃音为静音,启动震动)。

audioManager.setMode(int mode);

设置声音模式,可取值为MODE_NORMAL(正常模式,即在没有铃音与电话的情况), MODE_RINGTONE(铃响模式), MODE_IN_CALL(接通电话模式) or MODE_IN_COMMUNICATION(通话模式)。

注意:声音的调节是没有权限要求的。

 

mSoundProgress = (ProgressBar) v.findViewById(R.id.sound_seekbar);

-----------------------------------------------------------------------------------------------------------------------------------------

<SeekBar
                android:id="@+id/sound_seekbar"
                style="@style/Controller_Sound_SeekBar"

----------------------------------------------------------------

<style name="Controller_Sound_SeekBar">
        <item name="android:minHeight">97dip</item>
        <item name="android:maxHeight">97dip</item>
        <item name="android:progressDrawable">@drawable/controller_sound_seekbar</item>

--------------------------------

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:id="@android:id/background" android:drawable="@drawable/sound_seekbar_1"/>
    <item android:id="@android:id/secondaryProgress">
        <clip>
            <shape>
                <solid android:color="#00000000" />
            </shape>
        </clip>
    </item>
    <item>
        <layer-list>
            <item
                android:id="@android:id/progress"
                android:drawable="@drawable/sound_seekbar_2">
            </item>
        </layer-list>
    </item>

</layer-list>

-------------------------------
    </style>

</resources>

----------------------------------------------------------------


                android:layout_width="100dip"
                android:layout_height="40dip"
                android:layout_marginLeft="15dip"
                android:layout_marginTop="35dip"
                android:layout_toRightOf="@id/btn_sound"

                android:thumb="@null"
                android:focusable="true" />

-----------------------------------------------------------------------------------------------------------------------------------------


  if (mSoundProgress != null) {
   int maxVolume = mAM.getStreamMaxVolume(AudioManager.STREAM_MUSIC);//最大音量    
   int currentVolume = mAM.getStreamVolume(AudioManager.STREAM_MUSIC);//当前音量    
   if (mSoundProgress instanceof SeekBar) {
    SeekBar seeker = (SeekBar) mSoundProgress;
    seeker.setOnSeekBarChangeListener(mSoundSeekListener);

------------------------------------------------------------------------------------------------------------------------------------------

private OnSeekBarChangeListener mSoundSeekListener = new OnSeekBarChangeListener() {
  public void onStartTrackingTouch(SeekBar bar) {
  }

  public void onProgressChanged(SeekBar bar, int progress, boolean fromuser) {
   
   mAM.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0); //拖动seekbar时改变音量
   if(progress == 0){
    switchSound(true);
    return;
   }
   switchSound(false);
  }

  public void onStopTrackingTouch(SeekBar bar) {
  }
 };

 

------------------------------------------------------------------------------------------------------------------------------------------
   }
   mSoundProgress.setMax(maxVolume);
   mSoundProgress.setProgress(currentVolume);
  }

private View.OnClickListener mSoundListener = new View.OnClickListener() {
  boolean isSilent = false;
  public void onClick(View v) {
   if(isSilent){
    isSilent = false;
    switchSound(false);
    return;
   }
   isSilent = true;
   switchSound(true);
  }
 };

private void switchSound(boolean slient){
  if(slient){
   mSoundButton.setBackgroundResource(R.drawable.btn_sound_clear);
   mAM.setStreamMute(AudioManager.STREAM_MUSIC, true);
   return;
  }
  mSoundButton.setBackgroundResource(R.drawable.btn_sound);
  mAM.setStreamMute(AudioManager.STREAM_MUSIC, false);
 }

 

show:

int currentVolume = mAM.getStreamVolume(AudioManager.STREAM_MUSIC);//当前音量
  mSoundProgress.setProgress(currentVolume);

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