@Override
    public String loadSecretKey() {
        try {
            SecreteKey secreteKey = mSecretKeyManager.loadSecretKey();
            SAEncryptListener mEncryptListener = mSecretKeyManager.getEncryptListener(secreteKey);
            if (mEncryptListener == null) {
                return "";
            }
            return secreteKey.toString();
        } catch (JSONException e) {
            SALog.printStackTrace(e);
        }
        return null;
    }
@Test
    public void loadSecretKey() {
        SAHelper.initSensors(mApplication);
        SAEncryptAPIImpl encryptAPIImpl = new SAEncryptAPIImpl(SensorsDataAPI.sharedInstance(mApplication).getSAContextManager());
        encryptAPIImpl.loadSecretKey();
    }