android soap webservers 无法执行 报错 ht.call(SOAP_ACTION, envelope);解决方法

1.可能没有加入网络访问权限，在Manifest里面加入，<uses-permission android:name="android.permission.INTERNET"/>

2.版本问题，很可能的问题，因为在android高于9的会出错，所以简单粗暴的办法就是，直接将版本信息

<uses-sdk
android:minSdkVersion="？"
android:targetSdkVersion="?"

/>

删除即可。

其他具体参考代码如下：

 package com.example.soaptestforandroid;

 import java.io.IOException;

 import org.ksoap2.SoapEnvelope;
 import org.ksoap2.serialization.SoapObject;
 import org.ksoap2.serialization.SoapSerializationEnvelope;
 import org.ksoap2.transport.HttpTransportSE;
 import org.xmlpull.v1.XmlPullParserException;

 import android.os.*;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.util.Log;
 import android.view.Menu;
 import android.widget.*;

 public class MainActivity extends Activity
 {

     private static final String SERVICE_NAMESPACE = "http://services.jason.com/";
     private static final String SERVICE_URL = "http://172.16.1.164:8080/MyWebServer/UserInfoPort?wsdl";
     private EditText tv = null;

     @SuppressLint("NewApi")
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         try {
         tv = (EditText) findViewById(R.id.hello);

         //如果本系统为4.0以上（Build.VERSION_CODES.ICE_CREAM_SANDWICH为android4.0）
         if (Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
             // 详见StrictMode文档
             StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                     .detectDiskReads().detectDiskWrites().detectNetwork()
                     .penaltyLog().build());
             StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                     .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()
                     .penaltyLog().penaltyDeath().build());
         }

         // 调用的方法
         String mathodName = "GetUserInfo";
         String SOAP_ACTION = SERVICE_NAMESPACE + mathodName;
         // 创建HttpTransportSE对象
             HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);

             ht.debug = true;
             // 使用soap协议创建Envelop对象
             SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                     SoapEnvelope.VER10);
             // 实例化SoapObject对象
             SoapObject object = new SoapObject(SERVICE_NAMESPACE, mathodName);
             // 将SoapObject对象设置为SoapSerializationEnvelope对象的传出SOAP消息
             envelope.bodyOut = object;
             envelope.dotNet = true;
             envelope.setOutputSoapObject(object);
                 // 调用webService
                 ht.call(SOAP_ACTION, envelope);
                 System.out.println("envelope.getResponse()---"
                         + envelope.getResponse());
                 if (envelope.getResponse()!= null) {

                     SoapObject result = (SoapObject) envelope.bodyIn;
                     String name = result.getProperty(0).toString();
                     System.out.println(name);
                     tv.setText("返回值为：" + name);

                 } else {
                     tv.setText("无返回值");
                 }
             } catch (Exception e) {
                 // TODO Auto-generated catch block
                 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.main, menu);
         return true;
     }

 }