android获得手机uuid

最新推荐文章于 2023-09-14 09:56:52 发布

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最新推荐文章于 2023-09-14 09:56:52 发布

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分类专栏： android android 文章标签： UUID

本文链接：https://blog.youkuaiyun.com/u014521046/article/details/51833417

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本文介绍了一种在Android设备上生成并存储唯一设备ID的方法。该方法优先使用Android ID，当其不可用或无效时，会尝试使用电信设备ID，若两者都不可用，则生成随机UUID并保存至偏好设置文件中。

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private  final String PREFS_FILE = "device_id.xml";
private  final String PREFS_DEVICE_ID = "device_id";
private  UUID uuid;

public String DeviceUuidFactory(Context context) {

    if( uuid == null) {
        final SharedPreferences prefs = context.getSharedPreferences( PREFS_FILE, 0);
        final String id = prefs.getString(PREFS_DEVICE_ID, null );
        if (id != null) {
            // Use the ids previously computed and stored in the prefs file
            uuid = UUID.fromString(id);
        } else {
            final String androidId = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
            // Use the Android ID unless it's broken, in which case fallback on deviceId,
            // unless it's not available, then fallback on a random number which we store
            // to a prefs file
            try {
                if (!"9774d56d682e549c".equals(androidId)) {
                    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);
            }
            // Write the value out to the prefs file
            prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString() ).commit();
        }
    }
    return uuid.toString();
}