初识AudioManager

来源：互联网发布：ubuntu ifconfig 编辑：程序博客网时间：2024/05/01 23:06

我今天在群里看到有人发了一个调节声音的小软件可以调节各种声音感觉挺方便就想借代码看看

可是不借真小气 ╭(╯^╰)╮ 于是我自己写个一个简单版本初识一下AudioManager

当然之后会对适配机型进行进一步深入让我先了解一下AudioManager

首先我们需要获取管理这方面的对象代码如下

AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

之后我们要了解下音的种类

①通话音量

AudioManager.STREAM_VOICE_CALL

②系统音量

AudioManager.STREAM_SYSTEM

③铃声音量

AudioManager.STREAM_RING

④音乐音量

AudioManager.STREAM_MUSIC

⑤提示声音音量

AudioManager.STREAM_NOTIFICATION

⑥闹铃音量

AudioManager.STREAM_ALARM

7双音多频

AudioManager.STREAM_DTMF max=15

了最后我们要了解一下控制音量大小的方法

//参数一调节音量类型 参数第二参数表示改变后的音量   第三个参数可以使同步显示音量调节条mAudioManager.setStreamVolume(type, i, i);

好了很简单最后我就展示下代码很短一节

public class Main2Activity extends AppCompatActivity {    SeekBar seekBar_alarm;    SeekBar seekBar_call;    SeekBar seekBar_music;    SeekBar seekBar_noti;    SeekBar seekBar_ring;    SeekBar seekBar_system;    AudioManager mAudioManager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        seekBar_alarm= (SeekBar) findViewById(R.id.seekBar_alarm);        seekBar_call= (SeekBar) findViewById(R.id.seekBar_call);        seekBar_music= (SeekBar) findViewById(R.id.seekBar_music);        seekBar_noti= (SeekBar) findViewById(R.id.seekBar_noti);        seekBar_ring= (SeekBar) findViewById(R.id.seekBar_ring);        seekBar_system= (SeekBar) findViewById(R.id.seekBar_system);         mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);        setListener(seekBar_alarm,mAudioManager.STREAM_ALARM,"闹钟音量");        setListener(seekBar_call,mAudioManager.STREAM_VOICE_CALL,"通话音量");        setListener(seekBar_music,mAudioManager.STREAM_MUSIC,"音乐音量");        setListener(seekBar_noti,mAudioManager.STREAM_NOTIFICATION,"提示音量");        setListener(seekBar_ring,mAudioManager.STREAM_RING,"铃声音量");        setListener(seekBar_system,mAudioManager.STREAM_SYSTEM,"系统音量");        seekBar_alarm.setProgress( mAudioManager.getStreamVolume( AudioManager.STREAM_ALARM ));        seekBar_call.setProgress(mAudioManager.getStreamVolume( AudioManager.STREAM_VOICE_CALL ));        seekBar_music.setProgress(mAudioManager.getStreamVolume( AudioManager.STREAM_MUSIC ));        seekBar_noti.setProgress(mAudioManager.getStreamVolume( AudioManager.STREAM_NOTIFICATION ));        seekBar_ring.setProgress(mAudioManager.getStreamVolume( AudioManager.STREAM_RING ));        seekBar_system.setProgress(mAudioManager.getStreamVolume( AudioManager.STREAM_SYSTEM ));        //通话音量        int max_call = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_VOICE_CALL );        int current_call = mAudioManager.getStreamVolume( AudioManager.STREAM_VOICE_CALL );        Log.i("VIOCE_CALL", "max_call : " + max_call + " current_call : " + current_call);        //系统音量        int max_system = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_SYSTEM );        int current_system = mAudioManager.getStreamVolume( AudioManager.STREAM_SYSTEM );        Log.i("VIOCE_CALL", "max_system : " + max_system + " current_system : " + current_system);//        ③铃声音量        int  max_ring = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_RING );        int  current_ring = mAudioManager.getStreamVolume( AudioManager.STREAM_RING );        Log.i("VIOCE_CALL", "max_ring : " + max_ring + " current_ring : " + current_ring);        //        ④音乐音量        int  max_music = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_MUSIC );        int  current_music = mAudioManager.getStreamVolume( AudioManager.STREAM_MUSIC );        Log.i("VIOCE_CALL", "max_music : " + max_music + " current_music : " + current_music);//        ⑤提示声音音量        int   max_noti = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_NOTIFICATION );        int current_noti = mAudioManager.getStreamVolume( AudioManager.STREAM_NOTIFICATION );        Log.i("VIOCE_CALL", "max_noti : " + max_noti + " current_noti : " + current_noti);//        ⑥闹铃音量        int max_alarm = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_ALARM );        int current_alarm = mAudioManager.getStreamVolume( AudioManager.STREAM_ALARM );        Log.i("VIOCE_CALL", "max_alarm : " + max_alarm + " current_alarm : " + current_alarm);

//        7双音多频int max_dtmf = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_DTMF );int current_dtmf = mAudioManager.getStreamVolume( AudioManager.STREAM_DTMF );Log.i("VIOCE_CALL", "max_dtmf : " + max_dtmf + " current_dtmf : " + current_dtmf);
    }    public void setListener(SeekBar seekBar, final int type, final String str){        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {                Log.i("VIOCE_CALL", i+"");                //参数一调节音量类型 参数第二参数表示改变后的音量   第三个参数可以使同步显示音量调节条                mAudioManager.setStreamVolume(type, i, i);            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {                Log.i("VIOCE_CALL11", "开始+");            }            @Override            public void onStopTrackingTouch(SeekBar seekBar) {                Log.i("VIOCE_CALL1", str+"结束"+mAudioManager.getStreamVolume( type));            }        });    }}

这样就可以了记住seekbar的最大值要和该类型音量的最大值一样才好控制

给大家列一下

①通话音量

AudioManager.STREAM_VOICE_CALL max=6

②系统音量

AudioManager.STREAM_SYSTEM max=15

③铃声音量

AudioManager.STREAM_RING max=15

④音乐音量

AudioManager.STREAM_MUSIC max=60

⑤提示声音音量

AudioManager.STREAM_NOTIFICATION max=15

⑥闹铃音量

AudioManager.STREAM_ALARM max=15

7双音多频

AudioManager.STREAM_DTMF max=15

最后一种双音多频最后加上去还没测试大家自己加一下吧O(∩_∩)O哈哈~

希望能对初学者有帮助

谢谢O(∩_∩)O谢谢

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