android手機唯一識別碼

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   // http://blog.csdn.net/billpig/article/details/6728573    public UUID DeviceUuidBuild(Context context) {        synchronized (this)        {            if( uuid == null)            {                final SharedPreferences prefs = context.getSharedPreferences( PREFS_FILE, 0);                final String id = prefs.getString(PREFS_DEVICE_ID, null );                if (id != null)                {                    uuid = UUID.fromString(id);                }                else                {                    final String androidId = Secure.getString(context.getContentResolver(), Secure.ANDROID_ID);                    try {                        if (!"9774d56d682e549c".equals(androidId)) //在主流廠商生產的裝置上，有一個很經常的bug，就是每個裝置都會產生相同的ANDROID_ID：9774d56d682e549c                        {                             uuid = UUID.nameUUIDFromBytes(androidId.getBytes("utf8"));                        }                        else                        {                            final String deviceId = ((TelephonyManager) context.getSystemService( Context.TELEPHONY_SERVICE )).getDeviceId();                            uuid = deviceId != null ? UUID.nameUUIDFromBytes(deviceId.getBytes("utf8")) : UUID.randomUUID();                        }                    }                    catch (UnsupportedEncodingException e)                     {                        throw new RuntimeException(e);                    }                    prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString() ).commit();                }            }        }        return uuid;    }    

 

android手機唯一識別碼