Question

如何显示警告信息，如果我无法与网址握手，我正在下面的字段中传递一个URL，如果我无法满足该网址（网址为404 gatway错误）。我需要一个警告框

忘记进入onpost执行，它只会在后台停留，但如何在后台执行警告 - 我的代码

private class CheckTypesTask extends AsyncTask<Void, Void, Void> {
        ProgressDialog asyncDialog = new ProgressDialog(MainActivity.this);


        @Override
        protected void onPreExecute() {
            // set message of the dialog
            asyncDialog.setMessage("Please Wait...");
            // show dialog
            asyncDialog.setCancelable(false);
            asyncDialog.show();
            super.onPreExecute();
        }
            @Override
        protected Void doInBackground(Void... arg0) {


            try {

                userna = user.getText().toString();
                passwd = pass.getText().toString();

                String serial = Build.SERIAL;
                Log.e("login method", userna + " " + passwd + "" + serial);
                ;
                SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
                PropertyInfo propInfo1 = new PropertyInfo();
                propInfo1.setName("conidential");
                propInfo1.setValue(user.getText().toString().trim());
                propInfo1.setType(String.class);
                request.addProperty(propInfo1);

                PropertyInfo propInfo2 = new PropertyInfo();
                propInfo2.setName("conidential");
                propInfo2.setValue(pass.getText().toString().trim());
                propInfo2.setType(String.class);
                request.addProperty(propInfo2);

                PropertyInfo propInfo3 = new PropertyInfo();
                propInfo3.setName("DeviceId");
                propInfo3.setValue(serial);
                propInfo3.setType(String.class);
                request.addProperty(propInfo3);

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

                envelope.setOutputSoapObject(request);
                HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
                androidHttpTransport.debug = true;
                androidHttpTransport.call(SOAP_ACTION, envelope);
                // Object response = (Object)envelope.getResponse();

                // SoapPrimitive response =
                // (SoapPrimitive)envelope.getResponse();

                SoapObject response = (SoapObject) envelope.getResponse();

                String status = response.getProperty("Status").toString();

                if (status.equals("1")) {

                    storename = response.getProperty("StoreName").toString();
                }

                Log.i("myApp", status.toString() + "Storename:" + storename);
                typeStatus = status.toString();

            } catch (Exception e) {
                e.printStackTrace();
                Log.e("exception at doin", e.toString());
            }
            return null;
        }
                @Override
        protected void onPostExecute(Void result) {
            // hide the dialog
            asyncDialog.dismiss();
            try {
                if (typeStatus.equals("1")) {
                ///////////doing my stuff
            super.onPostExecute(result);
            }
        }
        }
        }

Answer 1

你可以尝试将runOnUIthread放入doInBackground（Void ... arg0）{

{{1}}

显示警告消息，如果无法到达服务器（url）

1 个答案: