getVerticalScroll (PopupScreen) still 0?

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• I'm still working on pop filter

  I almost had an application ready to go, but I still want to create a menu (with custom bitmap buttons) that appears when you press an existing custom bitmap button.

  I created a screen with a bitmap background and a vertical field manager who holds my custom bitmap fields button, the code that runs when you press the buttons so I'm not a complete * beep *.  I did a lot of reading of course seems to the PopupScreen to the screen which is simular to simular screen.  So I thought it would be simple.

  I wanted to use the simpler code as I could in the first instance, so I added a quick code, under the case statement, to create a popup screen. I wanted to also give the bottom few color so I can see it and the text to display.

  The line containing the PopupScreen went through a few variations. It's just the last version I try.

  case CustomButtonField.SETTINGS:
                  
  SPC PopupScreen = new PopupScreen();

  VerticalFieldManager cbvfm = new VerticalFieldManager)

  
                cbps.add(cbvfm);
                pushScreen(cbps);

  I am embarrased to say that I can't even get it to build/execute (depends on the syntax i tried) past the first line PopupScreen cbps = new PopupScreen();

  I have search the knowledge base and looked at the FIleSelectorPopup sample. but I still cannot figure out what I am missing.

  Thanks for the assistance!

  Unlike Screen and MainScreen, PopupScreen does not come with an already supplied Manager.  So when you construct it, you must supply it with a Manager (the so called delegate Manager).  Aside from that, it is fairly easy to use.

  Anyway, I think the following variation on your code will work.

  VerticalFieldManager cbvfm = new VerticalFieldManager( )

  PopupScreen cbps = new PopupScreen(cbvfm);

  pushScreen(cbps);

• Get popupscreen user input and store it in the variable

  Hello world. I have a screen that is pushed to start the application

  pushScreen (new SPScreen());

  In the constructor of the form, I push an extension of popupscreen in the stack to get an int from the user through TextField amount.

  UiApplication.getUiApplication () .pushGlobalScreen (new SplashScreen(), 1, UiEngine.GLOBAL_SHOW_LOWER);

  In the popuupscreen, I store the entry under int amount;

  public void fieldChanged (field field, int context) {}

  name = nameTxt.getText ();

  quantity = Integer.parseInt (amountTxt.getText ());

  Close();

  }

  };

  Now I want int amount; in my screen to shoot the user supplied value and whenever you click on a button Add the amount in total, each time increasing the total amount.

   

  public static int amount;

  total int = 0;

  ...

  amount

  = OptionScreen.amount;

  Total = total + amount;

  No matter how many times you press the Add button it only changes the total amount. For example, if I enter 6 as the quantity and press the button 3 times I want the total 18 years, but the total is still only 6.

  I'm sure there's probably a way to pass a reference to the variable, but I have a similar situation where I have a variable which is accessible by a certain screens and can be changed in multiple screens as well.  I delcare a class called globalVars and put the variable.

  public class globalVars {
  
      public static int total;
  
  }
  

  Do only access you anywhere with globalVars.total.

  Kind regards

  Scott

• Difficult to get rid of the borders PopupScreen

  I put applyTheme to return nothing and still borders will not disappear.

  public class SplashDownloader extends PopupScreen
  { 
  
      private static GIFEncodedImage _image =  (GIFEncodedImage) GIFEncodedImage.getEncodedImageResource("ajax-loader.gif");
      private int _currentFrame;
      private static int _width=_image.getWidth();
      private static int _height=_image.getHeight();
      private int _xPos=(Display.getWidth() - _width) >> 1, _yPos=(Display.getHeight() - _height) >> 1;
      private AnimatorThread _animatorThread;
      public SplashDownloader() {
          super(new VerticalFieldManager()
          {
  
               protected void paintBackground(Graphics arg0) {
                  // TODO Auto-generated method stub
                  //super.paintBackground(arg0);
              }
              protected void applyTheme(Graphics arg0, boolean arg1) {
  
              }
  
              protected void sublayout(int maxWidth, int maxHeight) {
                  // TODO Auto-generated method stub
  
                  //super.sublayout(maxWidth, maxHeight);
                  setExtent(_width, _height);
              }
          }, Field.NON_FOCUSABLE);
          setBackground(
                  BackgroundFactory.createSolidTransparentBackground(
                          Color.BLACK, 0)); 
  
          // Start the animation thread.
          _animatorThread = new AnimatorThread(this);
          _animatorThread.start(); 
  
      } 
  
  protected void paintBackground(Graphics graphics) {
          // TODO Auto-generated method stub
          //super.paintBackground(graphics);
      }
      protected void paint(Graphics graphics) {
          for ( int i = 0; i <= _currentFrame; i ++ ) {
              graphics.drawImage(_image.getFrameLeft(i),
                                 _image.getFrameTop(i),
                                 _image.getFrameWidth(i),
                                 _image.getFrameHeight(i),
                                 _image,
                                 i,
                                 0, 0);
          }
      } 
  
      protected void onUndisplay() {
          _animatorThread.stop();
      } 
  
      protected void applyTheme(Graphics arg0, boolean arg1) {
              // TODO Auto-generated method stub
  
          }
      public void stop()
      {
          _animatorThread.stop(); 
  
      }
  
      private class AnimatorThread extends Thread {
          private SplashDownloader _theField;
          private boolean _keepGoing = true;
          private int _totalFrames, _loopCount, _totalLoops;
          public AnimatorThread(SplashDownloader _theScreen) {
                  _theField = _theScreen;
                  _totalFrames = _image.getFrameCount();
                  _totalLoops = _image.getIterations(); 
  
          } 
  
          public synchronized void stop() {
                  _keepGoing = false;
          } 
  
          public void run() {
                  while (_keepGoing) {
                          // Invalidate the field so that it is redrawn.
                          UiApplication.getUiApplication().invokeAndWait(
                            new Runnable() {
                                  public void run() {
                                          _theField.invalidate();
                                  }
                          });
                          try {
                            // Sleep for the current frame delay before
                            // the next frame is drawn.
                            sleep(_image.getFrameDelay(_currentFrame) * 10);
                          } catch (InterruptedException iex) {
                          } // Couldn't sleep.
                          // Increment the frame.
                          ++_currentFrame;
                          if (_currentFrame == _totalFrames) {
                            // Reset back to frame 0
                            // if we have reached the end.
                            _currentFrame = 0;
                            ++_loopCount;
                            // Check if the animation should continue.
                            if (_loopCount == _totalLoops) {
                              _keepGoing = false;
                            }
                          }
                  }
          } 
  
      }
  
  }
  

  BTW, there are three methods applyTheme. I guess the method empty arg takes care of it. Just an info.

      protected void applyTheme() {
  
          // do nothing
      }
  
      protected void applyThemeOnStateChange() {
  
          // do nothing
      }
  
      protected void applyTheme( Graphics graphics, boolean flag ) {
  
          // do nothing
      }
  

  If you're on 4.6.0 + you can also choose to create a class of border or background empty to get rid of the default theme borders. applyTheme() is incomplete.

• The width is my PopupScreen?

  I've implemented some slightly modified fields and buttons to allow the adjustment of the width. They work great on a screen:

  FixedLabelField ("count Set:",Display.getWidth()/2)); ")

  But what I can call to get the width of the PopupScreen? I tried all sorts of things, but they all come to zero...

  You still add your fields until the screen has its chance to layout itself.

  Create and add them inside of, say, of your PopupScreen onDisplay() (onUiEngineAttached() in 4.3 +).  When you do that, your screen is sure to have been laid out.

• PopupScreen with AnimatedGIFField

  I am creating a screen using the AnimatedGIFField class and progression custom by extending PopupScreen figure in the Blackberry docs.  The problem is that my screen does not display when I call the method that is supposed to display.

  Here is the code for the screen:

     RichTextField rtf;
      AnimatedGIFField agf;
     // GIFEncodedImage gei = (GIFEncodedImage) EncodedImage.getEncodedImageResource("ajaxloader.gif");
      String progress;
  
      // constructor for progressScreen
      progressScreen(String s)
      {
          super(new HorizontalFieldManager(), Field.NON_FOCUSABLE);
          int[] offset = new int[s.length()];
          byte[] attributes = new byte[s.length()-1];
          Font[] fonts = new Font[] {Font.getDefault().derive(Font.BOLD), Font.getDefault().derive(Font.PLAIN)};
          agf = new AnimatedGIFField(((GIFEncodedImage)GIFEncodedImage.getEncodedImageResource("resources/ajaxloader.gif")), Field.FIELD_RIGHT);
          rtf = new RichTextField(s, offset, attributes, fonts, Field.NON_FOCUSABLE);
          add(rtf);
          add(agf);
      }
  

  Here is the code for the method display:

  // behavior when displaying screen
  
      // method for displaying screen
      public void show()
      {
          UiApplication.getUiApplication().pushModalScreen(this);
      }
  

  I'm sure that I forgot something... one object or a sublayout(), but I cannot know what.

  I replaced the PopupScreen with a call to Status.show (String message, image bitmap Bitmap, int time) to check that it was a problem with my custom PopupScreen and not the surrounding code, and the Status.show () posted correctly.

  Any help would be appreciated.

  "You mean, like this?  Unfortunately, you're close, but still actually running on the event Thread.  'tril.run ();' executes the run method on the same Thread that you use.  What you wanted to write was:

  Tril.Start ();

  Give that a try, and you will start to notice the IllegalStateExceptions.

  "Wouldn't be too big for a dialogue?

  I don't know what you mean by that.

  You might be interested in this review:

  http://www.naviina.EU/WP/BlackBerry/loading-class-for-BlackBerry/#more-607

• Problem scrolling in PopupScreen

  Hello

  I added a PopupScreen to my application that will display a given text. When the text is displayed, scroll arrow appears indicating that there is more text to be displayed, however it doesn't let me scroll when I click on the down (tests on a BlackBerry with a trackball).

  The text is displayed in a LabelField (which I believe is not Focusable by default), but even when I say new LabelField ("text", Field.FOCUSABLE), it still doesn't let me scroll down. I tried to add other areas (for example, EditFields) and it seems to work. So I think the problem is with the update?

  Can someone tell me why this is? Here is my code:

  package com.kflicks.ui.Screens;
  
  import java.util.Vector;
  
  import net.rim.device.api.system.*;
  import net.rim.device.api.ui.container.*;
  import net.rim.device.api.ui.*;
  import net.rim.device.api.ui.component.*;
  
  public class SynopsisScreen extends PopupScreen implements KeyListener {
  
      Vector results;
  
      LabelField label;
  
      public SynopsisScreen(String synopsis) {
          super(new VerticalFieldManager(VERTICAL_SCROLL | VERTICAL_SCROLLBAR),
                  Field.FOCUSABLE);
  
          label = new LabelField(synopsis);
          add(label);
      }
  
      public void close() {
          UiApplication.getUiApplication().popScreen(this);
      }
  
      // ///////////////////////////////////
      // / implementation of Keylistener
      // ///////////////////////////////////
      public boolean keyChar(char key, int status, int time) {
          // intercept the ESC key - exit the app on its receipt
          boolean retval = false;
          switch (key) {
          case Characters.ENTER:
              break;
          case Characters.ESCAPE:
              close();
              break;
          default:
              retval = super.keyChar(key, status, time);
          }
          return retval;
      }
  
      /** Implementation of KeyListener.keyDown */
      public boolean keyDown(int keycode, int time) {
          return false;
      }
  
      /** Implementation of KeyListener.keyRepeat */
      public boolean keyRepeat(int keycode, int time) {
          return false;
      }
  
      /** Implementation of KeyListener.keyStatus */
      public boolean keyStatus(int keycode, int time) {
          return false;
      }
  
      /** Implementation of KeyListener.keyUp */
      public boolean keyUp(int keycode, int time) {
          return false;
      }
  }
  

  Try to exchange your LabelField to a RichTextField and see if that solves your problem.

• The Manager is null in PopupScreen

  Ignore this thread, I just made a stupid mistake in my own code and it had nothing to do with PopupScreen.

  Hi all

  I have the following problem, and I can't believe my eyes... I get off PopupScreen, I pass a new handler instance to the constructor inherited super caller and then on the line following getManager() returns null. (And of course add calls fail). For example:

  public class that dialogue extends PopupScreen implements {FieldChangeListener}

  [....]

  Public dialogue (properties conf, string text [, String String Yes, no, listening to the listener) {}
  Super (new VerticalFieldManager());

  log.log ("Manager ="+ getManager()); say the Manager is null
  This.Listener = listener;
          
  for (int i = 0; i)< text.length;="" i++="" )="">
  Add (new LabelField (text [i], Field.FIELD_HCENTER)); Throws NPE, while the text and the text [i] is NOT null. Without a doubt.
  }

  Has anyone seen anything like this before? I checked some of my first projects and (unsurprisingly), I could do the same thing without guile ay. (In fact it is wrong one could do here, since calling the inherited constructor must be the first statement...) Now, this fails for me on 4.2.1 4.5.0 and 4.7.0.

  At first, I thought that's a few threads question undocumented (I was bringing together the UI in a GUI thread not before calling enterEventDispatcher), but that works in all of my projects and I changed the boot in the end sequence, so who know it happens after the call to enterEventDispatcher. I tried to move it to the thread of the event, but it still does not work as a result. (As I look at the code it shouldn't be there all multithreaded processing issues.) At least as long as it's a java virtrual machine and not only something similar.)

  Laszlo

  ... and how to get away from the problem, sleep and talk (post on the forum) help to solve... I have accidentally overridden method add to be able to add components from the outside to a specific part of the window (just like with the standard dialog box class). Which was to throw the exception when it is called from the constructor as the manager used in there would be initialized later. Sorry, my bad, thanks for your efforts .

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