Android 用AudioManager类控制音量

核心提示：viewHolder.myProgressBar=(ProgressBar)findViewById(R.id.myProgress);viewHolder.audiomanage=(AudioManager)getSystemService(AUDIO_SERVICE);}//按钮 的单击事件ImageButton

viewHolder.myProgressBar=(ProgressBar)findViewById(R.id.myProgress);

viewHolder.audiomanage=(AudioManager)getSystemService(AUDIO_SERVICE);

}

//按钮 的单击事件

ImageButton btnListener(ImageButton b){

b.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

switch (v.getId()) {

case R.id.downButton:

viewHolder.audiomanage.adjustVolume(AudioManager.ADJUST_LOWER, 0);

volume=viewHolder.audiomanage.getStreamVolume(AudioManager.STREAM_RING);

viewHolder.myProgressBar.setProgress(volume);

mode=viewHolder.audiomanage.getRingerMode();

setImageState();

break;

case R.id.upButton:

viewHolder.audiomanage.adjustVolume(AudioManager.ADJUST_RAISE, 0);

volume=viewHolder.audiomanage.getStreamVolume(AudioManager.STREAM_RING);

viewHolder.myProgressBar.setProgress(volume);

mode=viewHolder.audiomanage.getRingerMode();

setImageState();

break;

case R.id.muteButton:

viewHolder.audiomanage.setRingerMode(AudioManager.RINGER_MODE_SILENT);

volume=viewHolder.audiomanage.getStreamVolume(AudioManager.STREAM_RING);

viewHolder.myProgressBar.setProgress(volume);

viewHolder.myImageView.setImageDrawable(getResources().getDrawable(R.drawable.mute));

break;

case R.id.normalButton:

viewHolder.audiomanage.setRingerMode(AudioManager.RINGER_MODE_NORMAL);

volume=viewHolder.audiomanage.getStreamVolume(AudioManager.STREAM_RING);

viewHolder.myProgressBar.setProgress(volume);

viewHolder.myImageView.setImageDrawable(getResources().getDrawable(R.drawable.normal));

break;

case R.id.vibrateButton:

viewHolder.audiomanage.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);