连接到Web服务以SocketTimeoutException结束

我有连接到Web服务的代码段。我的应用程序有一个按钮，当按下从服务器获取一些数据并显示给用户。这很简单，但从来没有工作。我已阅读所有关于我的问题的问候，但他们都没有解决它。该代码是从codeproject sample使用：连接到Web服务以SocketTimeoutException结束

public void onClick(View v) { 
    SoapObject request = new SoapObject("http://tempuri.org/", "Add"); 
    PropertyInfo pi=new PropertyInfo(); 
    pi.setName("a"); 
    pi.setValue(10); 
    pi.setType(Integer.class); 
    request.addProperty(pi); 
    pi=new PropertyInfo(); 
    pi.setName("b"); 
    pi.setValue(15); 
    pi.setType(Integer.class); 
    request.addProperty(pi); 

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

    envelope.setOutputSoapObject(request); 

    HttpTransportSE httpTransport = new HttpTransportSE("http://grasshoppernetwork.com/NewFile.asmx"); 
    String response=""; 
    try 
    { 
     httpTransport.call("http://tempuri.org/Add", envelope); 
     response = (envelope.getResponse()).toString(); 
    } 
    catch (Exception exception) 
    { 
     response=exception.toString(); 
    } 


    onSoapRequestFinished(response.toString()); 
}

我已经加入2个权限：Network_Access和互联网。令人惊讶的是，Web服务可以从AVD的浏览器访问。

的错误是：

java.net.MalformedURLException: no protocol: java.net.SocketTimeoutException 
    at java.net.URL.<init>(URL.java:589) 
    at java.net.URL.<init>(URL.java:486) 
    at java.net.URL.<init>(URL.java:435) 
    at org.apache.harmony.xml.parsers.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:115) 
    at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:155) 
    at ir.dana.sharif.testxml.MainActivity.onSoapRequestFinished(MainActivity.java:103) 
    at ir.dana.sharif.testxml.MainActivity.onClick(MainActivity.java:84) 
    at android.view.View.performClick(View.java:5610) 
    at android.view.View$PerformClick.run(View.java:22265) 
    at android.os.Handler.handleCallback(Handler.java:751) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:6077) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

来源

2017-03-04 ehsan toghian