Android:Ksoap2 Android可以在emulator（API 23）上工作，但不能在平板电脑（API 19）上工作

我正在尝试使用ksoap2 android使用W3School测试web服务。以下是我的异步任务的代码：

private class MyAsyncTask extends AsyncTask<Integer, Void, SoapPrimitive> {
    @Override
    protected void onPreExecute() {
        pgdProgress.show();
    }
    @Override
    protected SoapPrimitive doInBackground(Integer... params) {
        String SOAP_ACTION = "http://www.w3schools.com/xml/FahrenheitToCelsius";
        String METHOD_NAME = "FahrenheitToCelsius";
        String NAMESPACE = "http://www.w3schools.com/xml/";
        String URL = "http://www.w3schools.com/xml/tempconvert.asmx";

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("Fahrenheit", params[0]);

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);

        try {
            HttpTransportSE transport = new HttpTransportSE(URL);
            transport.call(SOAP_ACTION, envelope);
            return (SoapPrimitive) envelope.getResponse();
        } catch (Exception e) {
            Log.e("TEST", "KSOAP2", e);
        }
        return null;
    }
    @Override
    protected void onPostExecute(SoapPrimitive soapPrimitive) {
        pgdProgress.dismiss();
        if(soapPrimitive != null)
            txvOutput.setText(soapPrimitive.toString());
    }
}

---

有什么想法吗？对不起，我的英语不好，希望你能理解。

当然还有更多的原因。“KSOAP2”下面没有显示异常吗？@DeeV Nop，只是。。。

01-27 10:28:14.604 10437-10601/com.android.wsconsumer E/TEST: KSOAP2