Java tutorial
//package com.java2s; import android.media.ToneGenerator; public class Main { /** Returns a string character that represents the tone type. if input is * invalid, then returns an empty string. */ public static String getStringFromToneType(int toneType) { switch (toneType) { case ToneGenerator.TONE_DTMF_0: return "0"; case ToneGenerator.TONE_DTMF_1: return "1"; case ToneGenerator.TONE_DTMF_2: return "2"; case ToneGenerator.TONE_DTMF_3: return "3"; case ToneGenerator.TONE_DTMF_4: return "4"; case ToneGenerator.TONE_DTMF_5: return "5"; case ToneGenerator.TONE_DTMF_6: return "6"; case ToneGenerator.TONE_DTMF_7: return "7"; case ToneGenerator.TONE_DTMF_8: return "8"; case ToneGenerator.TONE_DTMF_9: return "9"; case ToneGenerator.TONE_DTMF_A: return "A"; case ToneGenerator.TONE_DTMF_B: return "B"; case ToneGenerator.TONE_DTMF_C: return "C"; case ToneGenerator.TONE_DTMF_D: return "D"; case ToneGenerator.TONE_DTMF_P: return "#"; case ToneGenerator.TONE_DTMF_S: return "*"; default: return ""; } } }