Android 获取guid

固定

private String getUUID() {
    final TelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(Context.TELEPHONY_SERVICE);
    final String tmDevice, tmSerial, androidId;
    tmDevice = "" + tm.getDeviceId();
    tmSerial = "" + tm.getSimSerialNumber();
    androidId = "" + Settings.Secure.getString(getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);
    UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
    String uniqueId = deviceUuid.toString();
    return uniqueId;
}

可变

private String getMyUUID(){
    UUID uuid = UUID.randomUUID();
    String uniqueId = uuid.toString();
    return uniqueId;
}

PS: Andorid 6.0以上系统，要添加动态获取限权。才能取到手机信息。