ObjectChoiceField and ChoiceField$ ChangeOptionChoiceField classcastexception

Similar Questions

• Strange: Objectchoicefield and ObjectListField in Gridfieldmanager - navigation problem

  Hi @all,

  I have a very strange problem, because running Simulator runs as I would have liked, but the device, the navigation is bad:

  running OS 5.0.0.42 3 on device (BB9700) and the Simulator

  1. the building screen

  2. put verticalfieldmanager on it that contains the background image

  3. put gridscreenmanager (with a column - the problem is with more then one column, too) on the first position of the vfm

  4. turn objectchoicefield with 5 points on the 1st row of the gsm

  5. put the objectlistfield with 5 points on the second line of gsm

  Program running in the Simulator:

  View all as I prefer.

  The first objectchoicefield and beyond the objectlistfield.

  When I scroll with trackpad OCF Gets the focus first and after that the olf on its first line.

  I can scroll up and down, and everything's fine.

  Program running on the device:

  View all as I prefer.

  The first objectchoicefield and beyond the objectlistfield.

  When I scroll with trackpad OCF Gets the focus first and after that the olf on its first line.

  So far so good:

  When I scroll down to the olf, all things are working properly. For example, point 4 a now focus.

  Now, if I try to go back in the OLF, it should go back to article 3 of the olf, but this is the leap into objectchoicefield. After that, if I try to go back to the objectlistfield, it jumps directly to point 4, which he came before.

  If I don't put the objectchoicefield in the first row, everything works fine.

  What can I do?

  I did something wrong?

  All ideas are very appeciated.

  Thanks in advance.

  CUA

  Michael

  Well, I found it.

  I made a mistake in the application of my own gridfieldmanager navigationmovement method.

  What is already strange: I used the same gridfieldmanager within 2 screens in my application. First screen was working fine, the second one was bad. Same content in both screens.

  Sorry for that.

  Thank you for all.

  CUA

  Michael

• ObjectChoiceField and FieldChangeListener

  I'm creating an application (Storm 9530 component package 4.7) that uses an ObjectChoiceField which is filled by anywhere from 1 to 50 choice programming.  I would use the FieldChangeListener to generate a new pop-up screen based on the selection made by the user of the ObjectChoiceField.  Because the list can be quite long, the user may need to scroll the list to find their choice.  Each time the selection is changed in the FieldChangedListener is called, but I want only to take action in the final selection is made ("clicked").  I have been in charge of the search and search but have not found the key to understand the current state of the ObjectChoiceField (open or closed).  Any help would be greatly appreciated.

  TIA,

  Tim

  You will not be able to differentiate between these types of changes within a FieldChangeListener.  Instead, you might have the user selects an entry and use a ButtonField or MenuItem to check their choice.  Or you could have your action occur when the focus is moved out of the ObjectChoiceField.

• Selection of savings between ObjectChoiceField and Hashtable

  I managed to save a text using EditField

  {if (profile1Hashtable.ContainsKey ("LastName"))}

  lastName.setText ((String) profile1Hashtable.get ("LastName"));

  }

  So I thought that to save a value (sex selector) would be

  {if (profile1Hashtable.ContainsKey ("Sex"))}

  sexChoiceField.setSelectedIndex ((Integer) profile1Hashtable.get ("Sex"));

  }

   

  But what is the code that I put in the save()?

  Its because I failed at the bis code 'new '.  Here's a corrected line:

  profile1Hashtable.put ("Sex", New Integer (sexChoiceField.getSelectedIndex ()));

• Characters.Escape and ObjectChoiceField

  Hi all

  I made an app that has an ObjectChoiceField and when you select an index, she throws you to another screen filtering what you see according to the selected index.

  When you are in the new screen and the user, press the ESC key to go back, the ObjectChoiceField displays the index that the user has selected before, and I want the ObjectChoiceField to set the default index value, is it possible?

  Not convinced this Sad_Bird idea is very "as object".  I don't think you want 2 screen to worry about screen 1.

  A number of options come to mind, the manifesto being once you got the selected index and screen 2, then in Screen1, just created all the index selected in your ObjectChoiceField to 0.  You can do so after you press display 2.

• ChoiceField help

  Hi here is my problem

  I've created a subclass (DynamicObjectChoice) that extends ObjectChoiceField and created an another subclass (MyObjectChoiceListener) that extends FieldChangeListener.

  In DynamicObjectChoice I crushed constructor and take an int parameter.

  Then in my main class, I've created a DynamicObjectChoice and fill in a loop like this.

  for (int i = 0; i < someInt; i++) { choiceFieldArray[i] = new DynamicObjectChoiceField(Label, choices, 0, i);
              MyObjectChoiceListener listener= new MyObjectChoiceListener();
              choiceFieldArray[i].setChangeListener(listener);
              add(choiceFieldArray[i]);}
  

  and crushed fieldChange MyObjectChoiceListener with this method.

  public void fieldChanged(Field field, int context) {
              System.out.println((DynamicObjectChoiceField)field).getLabel());
  }
  

  AND HE SAID CLASSCASTEXCEPTION! Why? im stuck here.  I have founfd that I have change

  System.out.println((DynamicObjectChoiceField)field).getLabel());
  

  TO

  System.out.println((ChoiceField)field).getLabel());
  

  It works but I need other methods that are available only on DynamicObjectChoiceField. Help, please!

  I solved this problem, but I don't understand why I should use it. I think that the event 'clone' the field being passed at run time, and when you try to cast it giives you classcast exception. Solution was this:

  ((DynamicObjectChoiceField) field.getOriginal()).getLabel();
  

  So in the hope that it helps someone else.

• Open objectChoiceField press ENTER, curve 8520 (JDE 5.0)

  Hello

  I added an objectChoiceField on horizontalfieldManager (hfm) and hfm is added to the main vericalfieldmanager.

  I click the trackpad, opens my objectChoiceField and I am able to make the selection,

  but when I press on enter (when ojectchoicefield is focused), the focus moves to the next field. I want to open choicefield when I press on enter the update choicefield.

  Thanks in advance.

  Thank you and best regards,

  Fekri

  I created this example... try what he's working on the press to enter the key

  SerializableAttribute public class HelloWorldScreen extends form {}

  ObjectChoiceField objectChoiceField;

  public HelloWorldScreen()
  {
  setTitle ("Screen Test");

  objectChoiceField = new ObjectChoiceField ("Test", new String [] {"1", "2", "3"});
  Add (objectChoiceField);

  }

  {} protected Boolean keyChar (char c, int status, int time)

  If (getFieldWithFocus () == objectChoiceField & c == Characters.ENTER) {}
  EventInjector.invokeEvent (new EventInjector.NavigationEvent (EventInjector.NavigationEvent.NAVIGATION_UNCLICK, 0, 0, status))

  ));
  }
  Returns true;
  }

  }

• Objectchoicefield custom

  Hai all,
  I need to implement the button and label field of objectchoice with separate click to button and label (or listview complete) event, please give suggestions to implement the custom objectchoicefield.

  

  The name of the company must establish a click event to view the details and the distinct x (delete button) need separate, click event to remove the choice of listfield.

  Thank you.

  You ask a lot of us aren't you?

  I suggest you just start trying to do just one of these things, something code that you think the work and we could help you get the code works.

  But I must point out that I've never seen anything like that on the BlackBerry that works as an ObjectChoiceField and is the kind of thing you're after.  So I suspect that you maybe isn't able to implement features as requested, or if you can, it will take a lot of time.  You might think to simplify the obligation.

  Remember that an ObjectChoiceField is not a click event different for different parts of the drop down, so you won't be able to use it.  You need to create something else.  In this kind of situation, I have in the past, created a popup screen to display the values of 'pull down', but this clearly does not resemble a pull down, even if it provides the same functionality.

• No discussion on objectchoicefield

  Hello friends

  I created 4 objectchoicefields and added to the screen. Now when I move the trackball, I can't focus on the fields. the focus remains on the raw itself.

  When I looked at the API documentation, he said "If you want your field receives focus, then you must override isFocusable to return true.

  So I created the objectchoicefield like this.

    showDialogTime = new ObjectChoiceField("Alerts Displayed For ",choiceNumbers,getTimeByInteger(),Field.FOCUSABLE)
          {
              public boolean isFocusable()
              {
                  return true;
              }
  
              protected void fieldChangeNotify(int context)
              {
                  if(context==2)
                  {
                      ApplicationSettings.getInstance().setStatusAlertTime(getIntFromString());
                  }
              }
                public void paint(Graphics graphics)
          {
                  graphics.setColor(Constants.fontColor);
                  super.paint(graphics);
          }
          };
  

  but I still can't s focus.what the problem?

  Thank you... But I got it working as there was a mistake in my code... I overrided navigationmovement() and consume it the movement of the trackball. Sorry to bother guys. Thanks again

• How to re - initialize an ObjectChoiceField.

  I usually Initializes an ObjectChoiceField like this:

  String [] message = GetMessageList();
  cboMessages = new ObjectChoiceField ("select a message," messages ");

  Add (cboPrinters);

  And it works very well.  However, later I want to delete all the entries and add a new list to the ObjectChoiceField.

  I can't seem to find how to clear the ObjectChoiceField and I see no way to insert new items?

  Am I missing something simple massively?

  Thank you.

  Try the method of setChoices (choice of Object []) ObjectChoiceField, so in your case, you would say

  cboMessages.setChoices (newList);

  General, I'm an invalidate() after that I did a setChoices(), just to make sure that the field is being updated on the screen.

• ChoiceField default value does not match the visible value

  I'm creating an ObjectChoiceField and have noticed a strange behavior.

  As soon as the application loads I see that choice at index 0 is the selected choice. However, if I call mychoice.getSelectedIndex () returns 1. I even tried to call this.setSelectedIndex (0) in the constructor, but it remains 1. If anyone has experienced this?

  NVM. freakin ' getIndex/getSelectedIndex are too similar!

• "BOLD" of Smartphones blackBerry displays serious error - IllegalArgumentException event log

  I was watching the "BOLD" error log and I came across a couple of fields marked "serious error". It seems that it is because of some kind of rendering on a modal dialog box, but I don't know exactly how to read the newspaper very well. Here's the glued log entry. Any ideas?

  Name: IllegalArgumentException

  GUID: 9c3cd62e3320b498

  Time: February 5, 2009 11:26:33

  30

  net_rim_cldc-10

  ObjectChoiceField

  getChoice

  0x6B9C

  net_rim_cldc-9

  ChoiceField

  0x6FF6

  net_rim_cldc-9

  ChoiceField

  getWidthOfChoice

  0x63F2

  net_rim_cldc-9

  ChoiceField$ ChangeOptionChoiceField

  getWidthOfChoice

  0x71DF

  net_rim_cldc-9

  ChoiceField

  0x6F3C

  net_rim_cldc-9

  ChoiceField

  moveChoiceFocus

  0 x 6498

  net_rim_cldc-9

  ChoiceField$ ChangeOptionChoiceField

  moveFocus

  0x73B2

  net_rim_cldc-8

  Manager

  moveFocus

  0x4E7C

  net_rim_cldc-8

  Screen$ NavigationMovementFocusSelector

  Select

  0xABC3

  net_rim_cldc-8

  Screen

  0xA40D

  net_rim_cldc-8

  Screen

  navigationMovement

  0x9AED

  net_rim_cldc-8

  Screen

  dispatchNavigationEvent

  0 x 8098

  net_rim_cldc-9

  UiEngineImpl

  processMessage

  0x9B41

  net_rim_cldc-6

  Application

  processNextMessage

  0xF06

  net_rim_cldc-7

  ModalEventThread

  run

  0x43EF

  Hello

  Outside of a technician certified to the RIM, I know most of the people can read and understand.

  I love you feared when I read on the curve and the storm.

  Although this indicates a serious error, I have not experienced the loss of function with each device.

  Every day I receive a severe message related to Javascript.

  I hope this helps!

  Thank you

  Bifocals

• Align ButtonField Center in HorizontalFieldManger when ObjectChoceField is not selected

  Hello
  I have developed a screen in which there's a topic labelField below that there is an ObjectChoiceField... My position and ObjectChoiceField do not scroll and will remain constant, under the title and ChoiceField object I have some data that must be the subject of a scroll and I could achieve this scrolling thing but my problem is that I place a button below these materials and placed this button in HorizontalFieldManager as follows

  ButtonField back;
  HorizontalFieldManager But_Back = new HorizontalFieldManager (HorizontalFieldManager.FIELD_HCENTER);
  Back = new CustomButtonField ("Back", ButtonField.FIELD_HCENTER);
  Back.setChangeListener (this);
  But_Back.Add (back);

  The first problem: At when only the header of the loading of the page and object coice field and my left side coded hard LabelField will be present and the button below and when I select the value in the ObjectChoiceField then the values corresponding to the labelField letside will be displayed all I can attchieve using the fieldChanged but my button that is currently I am unable to put in the Center... that when the page is loaded without values are present, so the button is to the left side and when I select a value of ObjectChoiceField, then it is aligned to the Center, I want to be at the Center...
  FYI: in the order of scroll implememtn in my Constructori say

  Super (new VerticalFieldManager (), NO_VERTICAL_SCROLL);
  Here I put the code for coice position and object fields in two different HorizontalFieldManager and then announces to the screen
               
  For the scrolling now, I create a verticalFieldManger like:
  VerticalFieldManager vor = new VerticalFieldManager(VerticalFieldManager.VERTICAL_SCROLL |) VerticalFieldManager.VERTICAL_SCROLLBAR);
  and each variable left and right in addition to HorozontalFieldmanger
  HFM HorizontalFieldManager = new HorizontalFieldManager();
  VFM. Add (HFM);

  and at the end I say
  HorizontalFieldManager But_Back = new HorizontalFieldManager (HorizontalFieldManager.FIELD_HCENTER);
  Back = new CustomButtonField ("Back", ButtonField.FIELD_HCENTER);
  Back.setChangeListener (this);
  But_Back.Add (back);
  VFM. Add (But_Back);
  Add (VFM);

  Add Field.USE_ALL_WIDTH in your VerticalFieldManager and DrawStyle.HCENTER in your ButtonField.

  Something like:

  VerticalFieldManager vfm = new VerticalFieldManager(Field.USE_ALL_WIDTH | VerticalFieldManager.VERTICAL_SCROLL | VerticalFieldManager.VERTICAL_SCROLLBAR);
  ///
  ///
  HorizontalFieldManager But_Back = new HorizontalFieldManager(HorizontalFieldManager.FIELD_HCENTER);
  ButtonField  Back = new ButtonField("Back",DrawStyle.HCENTER);
  Back.setChangeListener(this);
  But_Back.add(Back);
  vfm.add(But_Back);
  add(vfm);
  

  Concerning

  Bika

• a simple form with the "submit" button: can it look better?

  Hi all

  I did not imagine that a simple form (with Textfields and ChoiceFields) could do a lot of problems:

  I would like to ask a few basic questions about it. First the code (Simplified):

     GridFieldManager formfm;    
  
          EditField surname = new EditField("", "-", 25, Field.FIELD_LEFT | Field.FIELD_VCENTER | EditField.FILTER_DEFAULT);
      EditField email = new EditField("", "-", 25, Field.FIELD_LEFT | Field.FIELD_VCENTER | EditField.FILTER_EMAIL);
  
      public FormFieldManager(){
  
          formfm = new GridFieldManager(2,0);
  
          formfm.add(new LabelField("who: ", Field.FIELD_RIGHT | Field.FIELD_VCENTER));
          String[] choicewho = new String[] { "Mr", "Mrs", "Miss" };
          ObjectChoiceField who = new ObjectChoiceField("", choicewho, 0, Field.FIELD_LEFT |Field.FIELD_VCENTER);
  
          formfm.add(who);
  
      formfm.add(new LabelField("Surname :", Field.FIELD_RIGHT | Field.FIELD_VCENTER));
      formfm.add(surname);
  
      formfm.add(new LabelField("E-Mail :", Field.FIELD_RIGHT | Field.FIELD_VCENTER));
      formfm.add(email);
  
      ButtonField sendButton = new ButtonField("Send", Field.FIELD_HCENTER|ButtonField.CONSUME_CLICK);
      formfm.add(sendButton);
      FieldChangeListener listenerSendButton = new FieldChangeListener() {
      public void fieldChanged(Field field, int context) {
  
      try {
          String data = "send=true&surname=" +surname.getText();
          data += "&email=" + email.getText();      httpPost("http://bla/sendData.php", data);
      } catch (IOException e1) {
          e1.printStackTrace();
      }
      formfm.deleteAll();
      formfm.add(new LabelField("Grazie!"));
      }
    };
    sendButton.setChangeListener(listenerSendButton);
  

  now my questions:

  (1) don't miss something (style) for the EditFields? At the present time, it is possible to change them, but the behavior (9700 Simulator) is strange: it is 'difficult' to get from one field to the other and everything moves sometimes when editing...

  How do you define a standard form that seems 'normal' and can be completed as expected in other applications? (Swifts nothing, it is possible to access the next field with the expected key / trackpad (I have no touch screen)) and so on?

  The EditFields do not even have a border, but I guess that's the standard case on BlackBerry.

  (2) the ObjectChoiceField is also very ugly... It's too big... Is it not possible to reduce the size without much effort? (I couldn't everride it correctly). (I also tried with radio buttons, but unfortunately I can't add a RadioButtonGroup to my LayoutManager, strange)

  (3) it is perhaps a stupid question: I can't get the text selected from the ObjectChoiceField (to send it can in data).

  AM EditField, it's simple:

  editfield.getText()
  

  But how is it with my ChoiceField?

  I found getSelectedIndex() but it provides a value int not text...

  Thanks in advance for any suggestions!

  silizia

  1. you have defined fields as follows:

  EditField family name = new EditField ("vorname:", "-", 20, EditField.FILTER_DEFAULT);

  The 20 means 20 characters, so it's all the field allows you to enter.

  2. Yes, the mail filter is pretty useless.  Use the EmailAddressEditField instead

  3. you can play with the scroll, but the best thing to do is to set the focus on the first field that you want people to pull together - usually the upper part of the form.

• lag performance

  Hello

  I worked on an application and I noticed that when I run on my device (8800), in some cases performance is very slow.

  I have a lot of choiceFields, and the first time I click on one to change the option, it takes 2-3 seconds to reject the choices menu. The next choiceField I click on works fine, it is still only the first who has the lag.

  I noticed the same thing if I invoke the context menu by clicking the blackberry button. When I try to remove the menu, it takes 2-3 seconds, and again once this happens only the first time I click to display the menu. If I try again, without stimulus the app, it's fast and works as expected.

  So here something that happens when the small menu disappears which causes a shift of the first time, that he has to go.

  My screen consists of the following:

  VerticalFieldManager (vertical scrollbar) x 1

  Custom Manager (no scrolling) x 1

  VerticalFieldManager (no scrolling) x 1

  horizontalFieldManager (no scrolling) x 15

  RichtextField, x 1, ObjectChoiceField x 1

  RichTextField x 1

  Any ideas?

  Thank you!

  Thanks for the link.

  It turns out that I have is the substitution of the method onExposed() of the ObjectChoiceField, and went down to the size of the font in this method and for some reason any caused it to slow down. Now, I have just a flag to reset the font size as needed, rather than always doing.

  Thanks again!