Java tutorial
//package com.java2s; import android.media.AudioManager; public class Main { public static void performToggle(AudioManager audioManager) { audioManager.setRingerMode( isPhoneSilent(audioManager) ? AudioManager.RINGER_MODE_NORMAL : AudioManager.RINGER_MODE_SILENT); } public static boolean isPhoneSilent(AudioManager audioManager) { return audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT; } }