Code example for AudioManager

Methods: adjustVolume

0
	 * @param am 
	 *            AudioManager���� 
	 */ 
	public void rVolume(AudioManager am) {
		/** ������������ */ 
		am.adjustVolume(AudioManager.ADJUST_RAISE, 0);
	} 
 
	/** 
	 * ���� 
	 *  
	 * @param am 
	 *            AudioManager���� 
	 */ 
	public void silent(AudioManager am) {
		if (!silence) {
			am.setStreamMute(AudioManager.STREAM_MUSIC, true);
			silence = true;
		} 
 
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