下载Ksoap2.jar,

 

import  org.ksoap2.SoapEnvelope; import org.ksoap2.serialization.*; import  org.ksoap2.transport.HttpTransportSE; import  android.os.Handler;

Handler handler = new Handler() {
      @Override     public void handleMessage(Message msg) {
          super.handleMessage(msg);         Bundle bundle= msg.getData();         String result=bundle.getString("result");         Toast.makeText(LoginActivity.this,result,Toast.LENGTH_SHORT).show();     } };

new Thread() {
      public void run() {
          String Namespace = "http://tempuri.org/";         String MethodName = "UserLogin";         String WEB_SERVICE_URL = "http://192.168.4.2/myWeb/User.asmx";         SoapObject request = new SoapObject(Namespace, MethodName);         // 2、设置调用方法的参数值，如果没有参数，可以省略，         // 3、生成调用Webservice方法的SOAP请求信息。该信息由SoapSerializationEnvelope对象描述         SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(                 SoapEnvelope.VER12);         envelope.bodyOut = request;         // c#写的应用程序必须加上这句         envelope.dotNet = true;         HttpTransportSE ht = new HttpTransportSE(WEB_SERVICE_URL);         // 使用call方法调用WebService方法         try {
              ht.call(null, envelope);         } catch (Exception e) {
              e.printStackTrace();         }         try {
              final SoapPrimitive result = (SoapPrimitive) envelope.getResponse();             if (result != null) {
                  Log.d("----收到的回复----", result.toString());                 Message message=new Message();                 Bundle bundle=new Bundle();                 bundle.putString("result",result.toString());                 message.setData(bundle);                 handler.sendMessage(message);             }         } catch (Exception e) {
              Log.e("----发生错误---", e.getMessage());             e.printStackTrace();         }     } }.start();