我的黑莓应用程序突然停止工作。我的模拟器或/和我的应用程序没有加载，我得到“未捕获的异常：java.lang.NoClassDefFoundError”。自从我上次测试以来，我没有对我的代码进行任何更改。出了什么问题？
package mypackage;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.rmi.RemoteException;
import java.util.Hashtable;
import java.util.Vector;
import javacard.framework.UserException;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.location.Location;
import javax.microedition.location.LocationProvider;
import org.kobjects.base64.Base64;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransport;
import org.xmlpull.v1.XmlPullParserException;
import net.rim.device.api.system.*;
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.component.pane.TitleView;
import net.rim.device.api.ui.container.*;
import net.rim.device.api.ui.image.Image;
public class LoginTest extends UiApplication
{
public static void main(String[] args)
{
//Create a new instance of the app
//and start the app on the event thread.
LoginTest app = new LoginTest();
app.enterEventDispatcher();
}
public LoginTest()
{
//Display a new screen.
pushScreen(new LoginTestScreen());
}
}
//Create a new screen that extends MainScreen and provides
//behaviour similar to that of other apps.
final class LoginTestScreen extends MainScreen
{
//declare variables for later use
private InfoScreen _infoScreen;
private ObjectChoiceField choiceField;
private int select;
BasicEditField username;
PasswordEditField passwd;
CheckboxField checkBox1;
ButtonField loginBtn;
public LoginTestScreen()
{
//Invoke the MainScreen constructor.
super();
//Add a screen title.
setTitle("Track24ELMS");
LabelField login = new LabelField("ELMS Login", LabelField.FIELD_HCENTER);
login.setFont(Font.getDefault().derive(Font.BOLD, 30));
login.setMargin(10, 0, 20, 0); //To leave some space from top and bottom
HorizontalFieldManager user = new HorizontalFieldManager();
user.setMargin(0, 0, 10, 0);
HorizontalFieldManager pass = new HorizontalFieldManager();
pass.setMargin(0, 0, 20, 0);
HorizontalFieldManager checkbox = new HorizontalFieldManager();
checkbox.setMargin(0, 0, 30, 0);
HorizontalFieldManager btns = new HorizontalFieldManager(HorizontalFieldManager.FIELD_HCENTER);
LabelField usernameTxt = new LabelField("Username :");
LabelField passwordTxt = new LabelField("Password :");
username = new BasicEditField();
passwd = new PasswordEditField();
loginBtn = new ButtonField("Login", ButtonField.CONSUME_CLICK);
loginBtn.setChangeListener(new LoginButtonListener());
checkBox1 = new CheckboxField("Remember me",false);
user.add(usernameTxt);
user.add(username);
pass.add(passwordTxt);
pass.add(passwd);
btns.add(loginBtn);
add(login);
add(user);
add(pass);
add(checkBox1);
add(btns);
}
private class LoginButtonListener implements FieldChangeListener {
public void fieldChanged(Field field, int context) {
//Open a new screen
String uname = username.getText();
String pwd = passwd.getText();
String sep = "</>";
//If there is no input
if (uname.length() == 0 || pwd.length()==0)
Dialog.alert("One of the textfield is empty!");
else
{
String URL = "http://xxx.xxx.com/xxx/xxx.asmx";
String METHOD_NAME = "ValidateCredentials";
String NAMESPACE = "http://tempuri.org/";
String SOAP_ACTION = NAMESPACE+METHOD_NAME;
//final String URL = "http://prerel.track24elms.com/Android/T24AndroidLogin.asmx/ValidateCredentials";
SoapObject resultRequestSOAP = null;
HttpConnection httpConn = null;
HttpTransport httpt;
System.out.println("The username" + uname + "password" + pwd );
SoapPrimitive response = null;
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
//String usernamecode = Base64.encode(uname.getBytes());
//String pwdEncodeString = Base64.encode(pwd.getBytes());
request.addProperty("username", uname);
request.addProperty("password", pwd);
System.out.println("The request is=======" + request.toString());
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
//envelope.bodyOut = request;
envelope.dotNet = true;
//envelope.encodingStyle = SoapSerializationEnvelope.XSD;
envelope.setOutputSoapObject(request);
System.out.println("The envelope has the value++++"+ envelope.toString());
/* URL+ Here you can add paramter so that you can run on device,simulator etc. this will work only for wifi */
httpt = new HttpTransport(URL+ ";deviceside=true;ConnectionUID=S TCP");
//httpt.setXmlVersionTag("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
httpt.debug = true;
try
{
System.out.println("SOAP_ACTION == " + SOAP_ACTION);
httpt.call(SOAP_ACTION, envelope);
response = (SoapPrimitive) envelope.getResponse();
String result = response.toString();
System.out.println("response == " + result);
resultRequestSOAP = (SoapObject) envelope.bodyIn;
System.out.println("result == " + resultRequestSOAP);
String[] listResult = split(result, sep);
}
catch (IOException e) {
// TODO Auto-generated catch block
System.out.println("The exception is IO==" + e.getMessage());
} catch (XmlPullParserException e) {
// TODO Auto-generated catch block
System.out.println("The exception xml parser example==="
+ e.getMessage());
}
System.out.println( resultRequestSOAP);
//UiApplication.getUiApplication().pushScreen(new InfoScreen()); //Open a new Screen
}
}
};
private String[] split(String original, String separator) {
Vector nodes = new Vector();
int index = original.indexOf(separator);
while (index >= 0) {
nodes.addElement(original.substring(0, index));
original = original.substring(index + separator.length());
index = original.indexOf(separator);
}
nodes.addElement(original);
String[] result = new String[nodes.size()];
if (nodes.size() > 0) {
for (int loop = 0; loop < nodes.size(); loop++) {
result[loop] = (String) nodes.elementAt(loop);
System.out.println(result[loop]);
}
}
return result;
}
//To display a dialog box when a BlackBerry device user
//closes the app, override the onClose() method.
public boolean onClose()
{
Dialog.alert("Goodbye!");
System.exit(0);
return true;
}
//Create a menu item for BlackBerry device users to click to see more
//information about the city they select.
private MenuItem _viewItem = new MenuItem("More Info", 110, 10)
{
public void run()
{
//Store the index of the city the BlackBerry device user selects
select = choiceField.getSelectedIndex();
//Display a new screen with information about the
//city the BlackBerry device user selects
_infoScreen = new InfoScreen();
UiApplication.getUiApplication().pushScreen(_infoScreen);
}
};
//Create a menu item for BlackBerry device users to click to close
//the app.
private MenuItem _closeItem = new MenuItem("Close", 200000, 10)
{
public void run()
{
onClose();
}
};
//Create an inner class for a new screen that displays
//information about the city a BlackBerry device user selects.
private class InfoScreen extends MainScreen
{
String latitude, logitude, altitude;
public InfoScreen()
{
super();
setTitle("Itinerary");
LabelField login = new LabelField("Employee Itinerary", LabelField.FIELD_HCENTER);
HorizontalFieldManager userDetails = new HorizontalFieldManager();
userDetails.setMargin(0, 0, 10, 0);
HorizontalFieldManager statusBox = new HorizontalFieldManager();
statusBox.setMargin(0, 0, 20, 0);
HorizontalFieldManager locationDetails = new HorizontalFieldManager();
locationDetails.setMargin(0, 0, 30, 0);
HorizontalFieldManager imgBtn = new HorizontalFieldManager();
imgBtn.setMargin(0, 0, 40, 0);
//BitmapField userImg = new BitmapField(Bitmap.getBitmapResource("img1.jpg"));
LabelField userFetched = new LabelField("Sarah Farukh");
LabelField lastStatus = new LabelField("I am OK");
EditField statusMsg = new EditField("Status Message", "Update status here");
EditField lat = new EditField("Latitude", "latitude");
EditField longi = new EditField("Longitude", "logitude");
EditField alti = new EditField("Attitude", "altitude");
//BitmapField btnOK = new BitmapField(Bitmap.getBitmapResource("ok.png"),Field.FIELD_BOTTOM);
//BitmapField btnNO = new BitmapField(Bitmap.getBitmapResource("no.png"),Field.FIELD_BOTTOM);
//BitmapField btnHN = new BitmapField(Bitmap.getBitmapResource("hn.png"),Field.FIELD_BOTTOM);
//userDetails.add(userImg);
userDetails.add(userFetched);
userDetails.add(lastStatus);
statusBox.add(userFetched);
locationDetails.add(lat);
locationDetails.add(longi);
locationDetails.add(alti);
//imgBtn.add(btnOK);
//imgBtn.add(btnNO);
//imgBtn.add(btnHN);
add(login);
add(userDetails);
add(statusBox);
add(locationDetails);
add(imgBtn);
}
}
}
答案 0 :(得分：2)
您可能正在访问单独库中的类。您已经设置了项目，以便在构建时找到类。
如果由于某种原因未将该库部署到设备（忘记了？部署时出错？），那么您的课程在运行时将无法找到。
确保将此库正确部署到设备上（通过上载正确的已编译COD文件）。 或者通过正确设置构建路径将库包含到项目中。