Android应用中KSOAP2实现WebService交互

package com.android;   
  
import org.ksoap2.SoapEnvelope;   
import org.ksoap2.serialization.SoapObject;   import org.ksoap2.serialization.SoapSerializationEnvelope;   import org.ksoap2.transport.AndroidHttpTransport;     
import android.app.Activity;   import android.app.AlertDialog;   import android.app.Dialog;   import android.content.DialogInterface;   import android.os.Bundle;   import android.text.method.LinkMovementMethod;   import android.util.Log;   import android.view.Menu;   import android.view.MenuItem;   import android.view.View;   import android.widget.Button;   import android.widget.EditText;   import android.widget.ImageView;   import android.widget.TextView;     
public class MainActivity extends Activity {       private static String LOG_TAG = "Weather";       private static boolean DEBUG = false;       private static final int SHOW_ABOUT = 0x0001;       private static final String NAMESPACE = "http://WebXml.com.cn/";       //WebService地址       private static String URL = "http://www.webxml.com.cn/webservices/weatherwebservice.asmx";       private static final String METHOD_NAME = "getWeatherbyCityName";       private static String SOAP_ACTION = "http://WebXml.com.cn/getWeatherbyCityName";     
    private String weatherToday;       private String weatherTomorrow;       private String weatherAfterday;       private String weatherCurrent;       private int iconToday[] = new int[2];       private int iconTomorrow[] = new int[2];       private int iconAfterday[] = new int[2];     
    private Button okButton;       private EditText textInput;       private ImageView imageView1;       private ImageView imageView2;       private TextView textWeatherToday;       private ImageView imageView3;       private ImageView imageView4;       private TextView textWeatherTomorrow;       private ImageView imageView5;       private ImageView imageView6;       private TextView textWeatherAfterday;       private TextView textWeatherCurrent;       private SoapObject detail;       @Override      public void onCreate(Bundle savedInstanceState) {           super.onCreate(savedInstanceState);           setContentView(R.layout.main);   
           
        okButton = (Button)  findViewById(R.id.WeatherSearch);   
        textInput = (EditText) findViewById(R.id.TextWeather);   
        imageView1 = (ImageView) findViewById(R.id.ImageView01);   
        imageView2 = (ImageView) findViewById(R.id.ImageView02);   
        textWeatherToday = (TextView) findViewById(R.id.WeatherToday);   
        imageView3 = (ImageView) findViewById(R.id.ImageView03);   
        imageView4 = (ImageView) findViewById(R.id.ImageView04);   
        textWeatherTomorrow = (TextView) findViewById(R.id.WeatherTomorrow);   
        imageView5 = (ImageView) findViewById(R.id.ImageView05);   
        imageView6 = (ImageView) findViewById(R.id.ImageView06);   
        textWeatherAfterday = (TextView) findViewById(R.id.WeatherAfterday);   
        textWeatherCurrent = (TextView) findViewById(R.id.WeatherCurrent);   
           
        okButton.setOnClickListener(new Button.OnClickListener() {               public void onClick(View v) {                   showWeather();   
            }   
       });   
    }   
       
    private void showWeather() {           String city = textInput.getText().toString();   
        if (city.length() == 0) city = "合肥";           getWeather(city);