我有一个接受用户名和密码的Web服务，如果登录凭据正确，它会返回用户的姓名，状态，图像和最后已知的gps坐标。
至于现在，我被困在“登录”按钮中，应用程序既不会继续也不会引发任何错误。模拟器没有产生任何结果，我无法将应用程序加载到我的手机上。
package mypackage;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.rmi.RemoteException;
import java.util.Hashtable;
import javacard.framework.UserException;
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;
Hashtable persistentHashtable;
PersistentObject persistentObject;
static final long KEY = 0x9df9f961bc6d6baL;
// private static final String URL="http://prerel.track24elms.com/Android/T24AndroidLogin.asmx";
String strResult;
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);
// btn.setChangeListener(new view listener);
//checkBox1 = new CheckboxField("Remember me", false,Field.FOCUSABLE);
checkBox1 = new CheckboxField("Remember me",false);
user.add(usernameTxt);
user.add(username);
pass.add(passwordTxt);
pass.add(passwd);
//checkbox.add(checkBox1);
btns.add(loginBtn);
add(login);
add(user);
add(pass);
add(checkBox1);
add(btns);
// loginBtn.setChangeListener(btnlistener);
}
public void saveChecked() {
persistentHashtable.put("", username.getText());
persistentHashtable.put("", passwd.getText());
persistentHashtable.put("BoolData", new Boolean(checkBox1.getChecked()));
persistentObject.commit();
}
FieldChangeListener btnlistener = new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
//Open a new screen
String uname = username.getText();
String pwd = passwd.getText();
//If there is no input
if (uname.length() == 0 || pwd.length()==0) {
Dialog.alert("One of the textfield is empty!");
} else {
final String METHOD_NAME = "ValidateCredentials";
final String NAMESPACE = "http://tempuri.org/";
final String SOAP_ACTION = NAMESPACE + METHOD_NAME;
final String URL = "http://prerel.track24elms.com/Android/T24AndroidLogin.asmx";
SoapObject resultRequestSOAP = null;
HttpConnection httpConn = null;
HttpTransport httpt;
System.out.println("The username" + uname + "password" + pwd );
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
//String usernamecode = Base64.encode(username.getBytes());
//String pwdEncodeString = Base64.encode(passwd.getBytes());
request.addProperty("Username", "abc");//First parameter is tag name provided by web service
request.addProperty("Password", "xyz");
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-WiFi");
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);
System.out.println("the tranport" + httpt.toString());
resultRequestSOAP = (SoapObject) envelope.bodyIn;
System.out.println("result == " + resultRequestSOAP);
}
catch (IOException e) {
System.out.println("The exception is IO==" + e.getMessage());
} catch (XmlPullParserException e) {
System.out.println("The exception xml parser example==="
+ e.getMessage());
}
System.out.println( resultRequestSOAP);
UiApplication.getUiApplication().pushScreen(new InfoScreen()); //Open a new Screen
}
}
};
//To display a dialog box when a BlackBerry device user
//closes the app, override the onClose() method.
public boolean onClose()
{
if(checkBox1.equals("true"))
{
persistentObject = PersistentStore.getPersistentObject(KEY);
if (persistentObject.getContents() == null) {
persistentHashtable = new Hashtable();
persistentObject.setContents(persistentHashtable);
}
else {
persistentHashtable = (Hashtable)persistentObject.getContents();
}
if (persistentHashtable.containsKey("EditData")) {
username.setText((String)persistentHashtable.get("EditData"));
}
if (persistentHashtable.containsKey("BoolData")) {
Boolean booleanObject = (Boolean)persistentHashtable.get("BoolData");
checkBox1.setChecked(booleanObject.booleanValue());
if(booleanObject.booleanValue()==true){
saveChecked();
}
}
}
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();
}
};
//To add menu items to the menu of the app,
//override the makeMenu method.
//Create an inner class for a new screen that displays
//information about the city a BlackBerry device user selects.
private class InfoScreen extends MainScreen
{
public InfoScreen()
{
super();
setTitle("Itinerary");
LabelField login = new LabelField("Employee Itinerary", LabelField.FIELD_HCENTER);
Bitmap bitmap = Bitmap.getBitmapResource("img1.jpg");
EditField statusMsg = new EditField("Status Message", "Update status here");
}
}
}
答案 0 :(得分：1)
在您发布的代码中，没有任何设置可以响应您按下的登录按钮。
首先，让我们删除实现FieldChangeListener的匿名类：
FieldChangeListener btnlistener = new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
并且像这样：
private class LoginButtonListener implements FieldChangeListener {
public void fieldChanged(Field field, int context) {
// no change to the content of this method!
}
}
并在LoginTestScreen的构造函数中实例化它，并将其挂钩到登录按钮：
loginBtn = new ButtonField("Login", ButtonField.CONSUME_CLICK);
loginBtn.setChangeListener(new LoginButtonListener());
注意：您可以使其与您最初拥有的匿名按钮侦听器类一起使用。我只是不喜欢匿名类的可读性，特别是因为你的btnListener成员被声明的地方完全不同于其他所有成员。真正缺失的部分是对setChangeListener的呼唤。我只是想根据需要区分我推荐的内容。