直接上代码了
1.xml
2.activity
public class TestMusicActivity extends Activity {
private SeekBar SoundseekBar;
private AudioManager audioManager;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_music);
SoundseekBar=(SeekBar)findViewById(R.id.seekBar2);
audioManager=(AudioManager)getSystemService(AUDIO_SERVICE);//获取音量服务
int MaxSound=audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);//获取系统音量最大值
SoundseekBar.setMax(MaxSound);//音量控制Bar的最大值设置为系统音量最大值
int currentSount=audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);//获取当前音量
SoundseekBar.setProgress(currentSount);//音量控制Bar的当前值设置为系统音量当前值
SoundseekBar.setOnSeekBarChangeListener(new SeekBarListener());
}
class SeekBarListener implements SeekBar.OnSeekBarChangeListener{
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
if (fromUser) {
int SeekPosition=seekBar.getProgress();
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, SeekPosition, 0);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
}
