Sound Management in Android Application

This is a suggestion from myself about adjusting the volume of the sound effects or background music in your Android Activity(ies). The sample code is as below:<br /> public boolean onKeyDown(int keyCode, KeyEvent event) { <br /> AudioManager audioMgr = (AudioManager)getSystemService(AUDIO_SERVICE);<br /> switch (keyCode) {<br /> case KeyEvent.KEYCODE_VOLUME_UP :<br /> audioMgr.adjustStreamVolume(AudioManager.STREAM_MUSIC,<br /> AudioManager.ADJUST_RAISE, <br /> AudioManager.FLAG_SHOW_UI);<br /> return true;<br /> case KeyEvent.KEYCODE_VOLUME_DOWN:<br /> audioMgr.adjustStreamVolume(AudioManager.STREAM_MUSIC, <br /> AudioManager.ADJUST_LOWER, <br /> AudioManager.FLAG_SHOW_UI);<br /> return true;<br /> }<br /> return false;<br /> }<br /><br /> public boolean onKeyUp(int keyCode, KeyEvent event) {<br /> AudioManager audioMgr = (AudioManager)getSystemService(AUDIO_SERVICE);<br /> switch (keyCode) {<br /> case KeyEvent.KEYCODE_VOLUME_UP :<br /> audioMgr.adjustStreamVolume(AudioManager.STREAM_MUSIC, <br /> AudioManager.ADJUST_SAME, <br /> AudioManager.FLAG_SHOW_UI);<br /> return true;<br /> case KeyEvent.KEYCODE_VOLUME_DOWN:<br /> audioMgr.adjustStreamVolume(AudioManager.STREAM_MUSIC, <br /> AudioManager.ADJUST_SAME, <br /> AudioManager.FLAG_SHOW_UI);<br /> return true;<br /> }<br /> return false;<br /> }<br />onKeyDown method is called when a button is pressed and onKeyUp is called when the button is released. In this example specifically, we are raising and lowering the volumes when the volume keys are pressed and retain the values when the buttons are released.