单击登录按钮不会产生来自 Web 服务的响应，并且没有异常或其他可见错误。如何修复我的按钮？
代码：
public class Oral extends Activity {
String NAMESPACE = "http://mlxserver/";
String METHOD_NAME = "loginAuthentication";
String SOAP_ACTION = "http://mlxserver/MX_AgentService/loginAuthentication";
String URL = "http://mlxserver//HTTKSvc/MX_AgentService.svc?wsdl";
EditText et1,et2,et3;
Button bt1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_oral);
et1 = (EditText) findViewById(R.id.editText1);
et2 = (EditText) findViewById(R.id.editText2);
et3 = (EditText) findViewById(R.id.editText3);
bt1 = (Button) findViewById(R.id.button1);
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("USERNAME",et1.getText().toString());
request.addProperty("PASSWORD",et2.getText().toString());
request.addProperty("PIN",et3.getText().toString());
/* String authentication = android.util.Base64.encodeToString("username:password".getBytes(), android.util.Base64.DEFAULT);
List<HeaderProperty> headers = new ArrayList<HeaderProperty>();
headers.add(new HeaderProperty("Authorization","Basic " +authentication));
*/
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
try {
HttpTransportSE httpTransport = new HttpTransportSE(URL);
httpTransport.call(SOAP_ACTION, envelope);
SoapObject result = (SoapObject)envelope.getResponse();
if(result != null)
{
et1.setText(result.getProperty(0).toString());
et2.setText(result.getProperty(0).toString());
et3.setText(result.getProperty(0).toString());
Intent next = new Intent (getApplicationContext(),Second.class);
startActivity(next);
}
else
{
Toast.makeText(getApplicationContext(), "Enter USERNAME",Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(), "Enter PASSWORD",Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(), "Enter PIN",Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.oral, menu);
return true;
}
}