D/NetworkSecurityConfig: No Network Security Config specified, using platform default
W/System.err: java.io.IOException: HTTP request failed, HTTP status: 405
W/System.err: at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:195)
W/System.err: at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:116)
W/System.err: at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:111)
W/System.err: at com.mycompany.myfirstapp.webserviceclient.Visitor4Activity.add(Visitor4Activity.java:113)
W/System.err: at com.mycompany.myfirstapp.webserviceclient.Visitor4Activity$QueryAddressTask.doInBackground(Visitor4Activity.java:135)
W/System.err: at com.mycompany.myfirstapp.webserviceclient.Visitor4Activity$QueryAddressTask.doInBackground(Visitor4Activity.java:129)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:304)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
W/System.err: at java.lang.Thread.run(Thread.java:761)
访问网络权限已加，模拟器可以访问网络。
.405 (方法禁用) 禁用请求中指定的方法
你访问的接口不能使用吧
你用电脑工具试试能访问吗？
建议放到网络上（域名+服务器）试试。
http://www.cnblogs.com/pinocchioatbeijing/articles/2375139.html