有没有什么办法从android获取唯一的设备ID

这个问题在这里已经有了答案：

是否有唯一的Android设备ID？ 40个答案

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是的，你可以得到android设备MAC ID，这被称为唯一标识符分配给物理网段上的通信的网络接口，这是每个设备的唯一ID，但无法更改。

你可以通过Android中的WIFImanager获取它

WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = manager.getConnectionInfo();
String MACAddress = wifiInfo.getMacAddress(); 

不要忘记为清单文件添加权限

<uses-permission android:name="android.permission.READ_PHONE_STATE"> </uses-permission>

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我不认为有任何（完美）的方式来做到这一点。 请参阅链接。 如果您只想识别用户，您可以生成一个UUID并将其存储在应用程序的存储中。

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创建了一次课程，并在我的应用程序中使用它可以看到pastie

它创建唯一的ID并生成MD5消息作为唯一设备ID的字符串

public String getUDID(Context c) {

    // Get some of the hardware information
    String buildParams = Build.BOARD + Build.BRAND + Build.CPU_ABI
            + Build.DEVICE + Build.DISPLAY + Build.FINGERPRINT + Build.HOST
            + Build.ID + Build.MANUFACTURER + Build.MODEL + Build.PRODUCT
            + Build.TAGS + Build.TYPE + Build.USER;

    // Requires READ_PHONE_STATE
    TelephonyManager tm = (TelephonyManager) c
            .getSystemService(Context.TELEPHONY_SERVICE);

    // gets the imei (GSM) or MEID/ESN (CDMA)
       String imei = tm.getDeviceId();

      //gets the android-assigned id you can omit this because 
      //It's known to be null sometimes, it's documented as "can change upon factory reset". 
      //Use at your own risk, and it can be easily changed on a rooted phone.
    String androidId = Secure.getString(c.getContentResolver(),
            Secure.ANDROID_ID);

    // requires ACCESS_WIFI_STATE
    WifiManager wm = (WifiManager) c.getSystemService(Context.WIFI_SERVICE);

    // gets the MAC address
    String mac = wm.getConnectionInfo().getMacAddress();

    // concatenate the string
    String fullHash = buildParams + imei + androidId + mac;

    return md5(fullHash);

}

md5（String fullHash）函数

public String md5(String toConvert) {

    String retVal = "";

    MessageDigest algorithm;
    try {
        algorithm = MessageDigest.getInstance("MD5");
        algorithm.reset();
        algorithm.update(toConvert.getBytes());
        byte messageDigest[] = algorithm.digest();
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {
            hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
        }
        retVal = hexString + "";
    } catch (NoSuchAlgorithmException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return retVal;
}

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