■下载 ksoap2-android 包

dependencies {
    compile 'com.android.support:support-v4:13.0.+'
    
   //添加以下代码以声明类库的引用
    compile files('libs/ksoap2-android-assembly-3.0.0-RC.4-jar-with-dependencies.jar')
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:gravity="center|center_horizontal|center_vertical"
              android:orientation="vertical"
              android:background="#6AA7D2">

    <LinearLayout
            android:id="@+id/Layout_Input"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="15dp"
            android:layout_marginBottom="0dp"
            android:orientation="vertical">

        <EditText
                android:id="@+id/Txt_Name"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="text"
                android:hint="用户名" />

        <EditText
                android:id="@+id/Txt_Password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="textPassword"
                android:hint="密码" />
    </LinearLayout>

    <LinearLayout
            android:id="@+id/Layout_Button"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="20dp">

        <Button
                android:id="@+id/Btn_Login"
                android:layout_weight="1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="登录"
                android:onClick="Btn_Login_OnClick" />

    </LinearLayout>

</LinearLayout>

public void Btn_Login_OnClick(View view) {
        loginName = ControlHelper.GetText(this, R.id.Txt_Name);
        loginPassword = ControlHelper.GetText(this, R.id.Txt_Password);

        if (loginName.equals("")) {
            MessageHelper.AlertDialog(this, "操作提示","用户名不能为空."));
            findViewById(R.id.Txt_Name).requestFocus();
            return;
        }

        view.setEnabled(false);
        progressDialog = ProgressDialog.show(this,"Loading...","Please wait...",true,false);
        Thread thread = new Thread(new Runnable() {
            @Override
            public void run() {
                SystemClock.sleep(1000);
                Login(loginName, loginPassword);
            }
        });

        thread.start();
}

private void Login(String name,String psw)
    {
        Message msg = new Message();

        try
        {
　　　　　　　//声明Service的空间命名，.net默认为 http://tempuri.org/
　　　　　　  //第二个参数是要调用的方法
            SoapObject so  = new SoapObject(this.getString(R.string.webservice_namespace), "Login");

　　　　　　  //设置调用Service需要传入的两个参数，闻说参数名可以不正确，但顺序必需要正确
            so.addProperty("accountName", name);
            so.addProperty("password", psw);

　　　　　　  // 设置调用WebService方法的SOAP请求信息,并指定SOAP的版本
            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
            envelope.bodyOut = so;

　　　　　　　// 设置是否调用的是dotNet开发的WebService 
            envelope.dotNet = true;


　　　　　　　// 设置Service所使用的URL
            String url = this.getString(R.string.webservice_domain) + this.getString(R.string.webservice_url_logic);
            HttpTransportSE ht = new HttpTransportSE(url);
            ht.call(null, envelope);
            if (envelope.getResponse()!=null)
            {
　　　　　　　　　 //接收返回的对象
                  SoapObject responseSO = (SoapObject)envelope.getResponse();
                Boolean succeed = Boolean.parseBoolean(responseSO.getProperty("Succeed").toString());
                if(!succeed)
                {
                    msg.obj = responseSO.getProperty("Message").toString();
                    msg.what = 0;
                }
                else
                {
                    msg.obj = responseSO.getProperty("ReturnObject");
                    msg.what = 1;
                }
            }
        }
        catch (Exception ex)
        {
            msg.obj = ex.getMessage();
            msg.what = -1;
        }
        finally {
            handler.sendMessage(msg);
        }
}

private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg){
            findViewById(R.id.Btn_Login).setEnabled(true);
            progressDialog.dismiss();
            switch (msg.what)
            {
                case -1:
                    //exception
                    MessageHelper.AlertDialog(Activity_Main.this, "异常提示", msg.obj.toString());
                    break;
                case 0:
                    //fail
                    MessageHelper.AlertDialog(Activity_Main.this, "错误提示", msg.obj.toString());
                    break;
                case 1:
                    //login success
                    MessageHelper.AlertDialog(Activity_Main.this, "操作提示", "登录成功。");

　　　　　　　　　　　 break;

                default:
                    break;
            }
        }
    };

<uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="16" />

<!--添加以下节点声明网络使用-->
<uses-permission android:name="android.permission.INTERNET" />