好的，我真的被困在这里！我已经通过很多方式尝试过它，但却有所作为。我试图通过在模拟器上启动的Android应用程序访问wcf web服务（本地）但我的应用程序崩溃，这里是代码。
这是我的Android
public class MainActivity extends TabActivity {
/* I am not sure about these !! SOry */
private static final String SOAP_ACTION = "http://localhost:1034/ILocation_Based_Reminder_WCF/getReminder";
private static final String METHOD_NAME = "getReminder";
private static final String NAMESPACE = "http://localhost:1034/";
private static final String URL = "http://localhost:1034/Location_Based_Reminder_WCF.svc/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initialize();
}
@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;
}
private void initialize()
{
try {
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
// request.addProperty("3235466455");
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try{
androidHttpTransport.call(SOAP_ACTION, envelope);
}catch(Exception e){
System.out.println("this is the message");
System.out.println(e.getMessage());
System.out.println("this is stack tracer");
e.printStackTrace();
}
SoapPrimitive result = (SoapPrimitive)envelope.getResponse();
String resultData = result.toString();
System.out.println(resultData);
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
这就是网络服务
接口
namespace Location_Based_Reminder
{
// NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "ILocation_Based_Reminder_WCF" in both code and config file together.
[ServiceContract]
public interface ILocation_Based_Reminder_WCF
{
[OperationContract]
String insertUser(long user);
[OperationContract]
String insertReminder(long user,String Location,String Time,String Time_Offset,String Date,String Date_Offset,int Status,String Description);
[OperationContract]
String getReminder(long userMSISDN);
}
}
.svc文件
namespace Location_Based_Reminder
{
public class Location_Based_Reminder_WCF : ILocation_Based_Reminder_WCF
{
private BUS _bus;
private ValueObject _vo;
private void _initiate()
{
_bus = new BUS();
_vo = new ValueObject();
}
#region getReminder
public String getReminder(long userMSISDN)
{
_initiate();
DataTable _table = new DataTable();
_table = _bus.getReminder(3235466455);
String check=null;
foreach (DataRow row in _table.Rows)
{
check = row["reminder_Location"].ToString();
}
return check;
}
#endregion
}
}
这是我得到的消息
03-29 20:02:42.245: I/System.out(2102): this is the message
03-29 20:02:42.245: D/AndroidRuntime(2102): Shutting down VM
03-29 20:02:42.245: W/dalvikvm(2102): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
03-29 20:02:42.255: E/AndroidRuntime(2102): FATAL EXCEPTION: main
03-29 20:02:42.255: E/AndroidRuntime(2102): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.locationbasedreminderversionOne.Two/com.example.locationbasedreminderversionOne.Two.MainActivity}: java.lang.NullPointerException
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread.access$600(ActivityThread.java:141)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.os.Handler.dispatchMessage(Handler.java:99)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.os.Looper.loop(Looper.java:137)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread.main(ActivityThread.java:5041)
03-29 20:02:42.255: E/AndroidRuntime(2102): at java.lang.reflect.Method.invokeNative(Native Method)
03-29 20:02:42.255: E/AndroidRuntime(2102): at java.lang.reflect.Method.invoke(Method.java:511)
03-29 20:02:42.255: E/AndroidRuntime(2102): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-29 20:02:42.255: E/AndroidRuntime(2102): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-29 20:02:42.255: E/AndroidRuntime(2102): at dalvik.system.NativeStart.main(Native Method)
03-29 20:02:42.255: E/AndroidRuntime(2102): Caused by: java.lang.NullPointerException
03-29 20:02:42.255: E/AndroidRuntime(2102): at com.android.internal.os.LoggingPrintStream.println(LoggingPrintStream.java:298)
03-29 20:02:42.255: E/AndroidRuntime(2102): at com.example.locationbasedreminderversionOne.Two.MainActivity.initialize(MainActivity.java:116)
03-29 20:02:42.255: E/AndroidRuntime(2102): at com.example.locationbasedreminderversionOne.Two.MainActivity.onCreate(MainActivity.java:40)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.Activity.performCreate(Activity.java:5104)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
03-29 20:02:42.255: E/AndroidRuntime(2102): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
03-29 20:02:42.255: E/AndroidRuntime(2102): ... 11 more
我在android清单中添加了permisions和stuff。请帮忙。提前致谢
答案 0 :(得分：0)
这里的问题是您需要从您设计的服务中获取SOAP。示例代码如下。
String SOAP_ACTION = "http://tempuri.org/WriteToDB";
String NAMESPACE = "http://tempuri.org/";
String METHOD_NAME = "WriteToDB";
String URL = "http://10.224.185.37/AndroidService.asmx?op=WriteToDB";
答案 1 :(得分：0)
好吧我弄清楚了问题，只要android中涉及网络通信，就不应该直接在onCreate方法中完成，因为应该使用异步活动。
答案 2 :(得分：0)