我编写了一个 android 程序来将值从 web 服务加载到表行。但是 value 为 null 所以我需要将其转换为字符串。有人可以告诉我这样做的方法吗?
try{
SoapObject request = service.getRequest();
SoapSerializationEnvelope envelope = service.getEnvelope(request);
SoapObject response = service.getResponse(envelope);
Log.i("Service Master", response.toString());
int count = response.getPropertyCount();
for (int i = 0; i < count; i++) {
SoapObject result = (SoapObject) response.getProperty(i);
DeleteuserDetails deleteuserDetails=new DeleteuserDetails();
deleteuserDetails.setUserId(result.getPropertyAsString(4));
deleteuserDetails.setUserName(result.getPropertyAsString(2));
deleteuserDetails.setUserRole(result.getPropertyAsString(3));
deleteuserDetails.setCreatedDate(result.getPropertyAsString(1));
deleteuserDetails.setCreatedBy(result.getPropertyAsString(0));
userdetail.add(deleteuserDetails);
}
现在deleteuserDetails.setCreatedBy(result.getPropertyAsString(0));
从 webservice 获取 null 值,所以我需要将其转换为 string "null"
。
日志猫:
12-20 18:48:52.608: W/System.err(2174): java.lang.NullPointerException
12-20 18:48:52.608: W/System.err(2174): at org.ksoap2.serialization.SoapObject.getPropertyAsString(SoapObject.java:165)
12-20 18:48:52.608: W/System.err(2174): at com.mvss.admin.Deleteuser$deteUserIdLoad.doInBackground(Deleteuser.java:81)
12-20 18:48:52.608: W/System.err(2174): at com.mvss.admin.Deleteuser$deteUserIdLoad.doInBackground(Deleteuser.java:1)
12-20 18:48:52.608: W/System.err(2174): at android.os.AsyncTask$2.call(AsyncTask.java:185)
12-20 18:48:52.608: W/System.err(2174): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-20 18:48:52.608: W/System.err(2174): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-20 18:48:52.608: W/System.err(2174): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
12-20 18:48:52.608: W/System.err(2174): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
12-20 18:48:52.608: W/System.err(2174): at java.lang.Thread.run(Thread.java:1096)