PopupScreen to dismiss

Hi all

I created PopupScreen on the main screen, but now I would like to reject the popupscreen by the ESC key.

How would I do that?

Thanks in advance.

DK.

PopupScreen extends the screen has a keyChar method, which is what I normally override to provide this feature.

So basically all you need to do is add a keyChar method as follows to your PopupScreen. (Note the following code has not been compiled or tested, but should show you what you need to do).

protected boolean keyChar(char c, int status, int time) {
    if ( key ==  Characters.ESCAPE ) {
        UiApplication.getUiApplication().popScreen(this);
        return true;
    }
    return super.keyChar(key,status,time);
}

Tags: BlackBerry Developers

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Set the position of a PopupScreen

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Thank you

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Quote from the old forum:

ligraseac

Messages: 2
Join date: Jun 2007

Screen Popup position

Posted the: June 29, 2007 05:45

Hello

How can I set the position of a popup screen? I want to set its position next to a field that has the focus.

Thank you

Comments: fjarlier

Re: Screen Popup Position

Posted the: 5 July 2007 17:10

Hello

In your class that extends the PopupScreen, you must override sublayout like this:

' public void sublayout (int width, int height) {}

Super.sublayout (Width, Height);
setPosition (50,50);
}

Because the setPosition can occurs only in the layout method. And then, you can position your PopupScreen anywhere you want.

For me it works...

If you have another solution, that I take.

So long

Fred

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It works fine when moves right.

And it is not clear the previous, when position moves to the left.

So, you can see the code that I use.

import net.rim.device.api.ui.component.*;import net.rim.device.api.ui.container.*;import net.rim.device.api.ui.*;import net.rim.device.api.system.Bitmap;import net.rim.device.api.system.KeyListener;

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      public boolean keyRepeat(int keycode, int time) {         return false;     }

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      public InfoPopupScreen(Manager manager){          super(manager);       }

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          char key =  net.rim.device.api.ui.KeypadUtil.getKeyChar(keycode, net.rim.device.api.ui.KeypadUtil.MODE_UI_CURRENT_LOCALE);            //To left         if(key == 79 || key == 111) {             x = x - 5;                progressPopup.updateLayout();         }                      if(key == 73 || key == 105) {             x = x + 10;               progressPopup.updateLayout();         }

          if(key == net.rim.device.api.system.Characters.ESCAPE) {              this.close();         }         return true;      }

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I hope you can solve my problem.

TNX in advance"

Ttry this... In paintBackground(), call clear after you set the background color.

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Hello everyone,

I create the application such that when the application starts at the beginning so I put this request

in the background and then I push the global popupscreen for help

UiApplication.getUiApplication () .pushGlobalScreen (currentpopupScreen, 1, UiApplication.GLOBAL_MODAL);

afterwords when I want to delete this global else popupscreen class, I used the following line of code

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johnbibs wrote:

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This is my first post on this amazing forum. I read through many large threads with lots of answers to the questions I had in my short time developing applications for the BlackBerry smartphone. Unfortunately, I hit my first stumbling block, which I'm sure will be very easy, but hey, we all start somewhere.

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public static void main(String[] args) {
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    public void continueProcess() {
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    }
}
```
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I have a PopupScreen, NHCustomPopupScreen.

When a function is called, I display this screen:

NGCustomPopupScreen ngcps = new NGCustomPopupScreen();
UiApplication.getUiApplication () .pushScreen (ngcps);

After the function finishes its work, I want to close the NGCustomPopupScreen. I'm sure that this is my problem, but I'm not sure what to change here.

UiApplication.getUiApplication () .popScreen (UiApplication.getUiApplication () .getActiveScreen ());

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NGCustomPopupScreen ngcps = new NGCustomPopupScreen();

.....

UiApplication.getUiApplication () .popScreen (ngcps);

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{}

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Hello world

This is my first post here. Sorry if the question is very simple...

I need to download an image on server. I display a dialog box to confirm if the file should be downloaded.

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```
public void fieldChanged(Field f, int context) {
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                }
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My problem is that the I selected YES the dialog box only after the call to webservice licensees are completed and the image is published on the server and the screen is refreshed with the new image.

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Welcome to the forum!

Correctly, you start the process of network on a separate Thread. Then you attach the wire event for this Thread by using the following instructions:

t.Start ();
t.Join ();

So you give up the thread of events not until your networking activity has finished. It does not block your event feed so that your application will become unresponsive to the user and as you noted, activities requiring feed event, such as the removal of your dialog box, cannot occur.

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I am facing a strange problem with PopupScreen and how to throw one.

I try to make a page "load" that is displayed during the execution of a thread.

I started with a sample code here: http://supportforums.blackberry.com/t5/Java-Development/Sample-Please-Wait-or-Progress-Bar-Code/td-p...

That's why the way I call the PopupScreen can be weird.

My problem is that when I want to launch the anti-pop in the constructor of the screen, I have a RuntimeException and when I put it in a ButtonField change event and simulate the click event it works fine.

So I was wondering what is the difference?

For your information, this is my code that works:

public final class ScreenCache extends MainScreen
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    public ScreenCache()
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        EventInjector.invokeEvent(new EventInjector.NavigationEvent(EventInjector.NavigationEvent.NAVIGATION_CLICK, 0, 0, 0));
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    {
        EncodedImage ei = EncodedImage.getEncodedImageResource("img/SplashScreen.png");
        EncodedImage ei2 = new ToolsImage().ResizeImage(ei, Display.getWidth(), 0);

        graphics.drawBitmap(new XYRect(0, 0, Display.getWidth(), Display.getHeight()), ei2.getBitmap(), 0, 0);
    }

   protected boolean onSavePrompt()
   {
       return true;
   }

}

My PopupScreen is very simple, it only shows text and animated images, so the problem probably isn't there.

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Scott

Menu remains visible after you make the selection, and does not show Popupscreen

Hey. Unable to get a (a gaugefield) on a Popupscreen progress bar to show. It is called from a menu. The user clicks a menu item, and a method is called. The method among other pushes a Popupscreen containing a Gaugefield on display battery-code below. Then, he starts a thread which downloads an image and using join() to wait for it complete (long story). Then, in the thread of events, it appears the Popupscreen.

The menu does not disappear when you click on it in the Simulator (JDE 4.7, the Bold 9700 sim), but the download happens. Once the download is complete, the menu disappears, the Popupscreen is shown and he tried to pop() Popupscreen, causing an IllegalArgumentException.

I tried to split the method into two methods, the download happened in the 2nd method, because I read the forum search that the UIEngine don't update the display until the method finishes (it runs in the event thread). But it made no difference...

How can I get this menu to disappear immediately and the push (popup) to work?

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```
                        progressbar = new GaugeField("", 0, 100, 50, GaugeField.NO_TEXT);
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                        threadbg.join(); // Wait for download thread to complete and 'die'

                        globalTiles.popScreen(progress);
```
Rule #1: all display updates should occur on the thread event or synchronized on the lock of the event.

Rule #2: the thread of events (or now the lock of the event) should never be blocked by lengthy operations.

The scenario you sketched out is usually handled like this: menu item run() method don't whatever immediate user interface updates are necessary and starts a worker thread. It does not wait until the thread ends before returning. (If so, updates the user interface include pushing a "Please wait" or progress pop up). The worker, at the same time, begins to do its stuff. When it's time to update the user interface (either because the task is completed or to view progress) the worker thread usually called invokeLater (Runnable) (a method in the Application class) where the executable run() method updates the user interface. If the worker thread must receive user input in his work, he can use invokeAndWait (Runnable), where the executable not all interactions of the user and stores the user entry somewhere so that the worker thread can grab after invokeAndWait() returns.

Although the synchronization on event lock works perfectly well, it is more common for some reason any to invoke a Runnable, perhaps because the latter clearly encapsulates in a separate object the work to be done on the event thread.

The above policy is the basis of the excellent Peter Strange example I linked to before.

View PopupScreen on TouchEvent.DOWN - who is TouchEvent.UP?

I am writing this post so much hope to get a response and, in the case I find myself, to post the answer with my findings.

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I display (pushScreen invokeLater inside) a small PopupScreen (a bubble) when a user touches a field containing the ToolTip (title text, in HTML terminology) defined.

When the user deletes the finger, I want the balloon go (anti-pop or close() the popup itself). However, I can't know what screen - the screen below or above the PopupScreen - Gets the TouchEvent.UP in this situation. Debugger does not help as much as it disrupts the sequence of key events.

If someone has done something similar, please answer.

Found the answer - person don't be TouchEvent.UP! Thanks to a screen pushed the screen gets TouchEvent.CANCEL immediately, as soon as the balloon is visible. Use the information as you see fit.

popupscreen extention problem

Hello everyone.

I am trying to open a java popupscreen of an extention and shows me the following error message, telling me that I am doing wrong or if it is an example.

java.lang.IllegalStateException: interface engine user accessed without holding the lock on the event.

package samplecode;

import net.rim.device.api.script.ScriptableFunction;
import net.rim.device.api.system.Alert;
import net.rim.device.api.ui.UiApplication;

public final class AlertFunction extends ScriptableFunction {

    public Object invoke(Object obj, Object[] args) throws Exception {
       if (!Alert.isVibrateSupported()) {
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       return UNDEFINED;
    }
}

package samplecode;

import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.PopupScreen;
import net.rim.device.api.ui.container.VerticalFieldManager;

public class box extends PopupScreen {

    /**
     *
     */
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        add(btnfldCancel);
        // TODO Auto-generated constructor stub
    }

}

Hi chicoxml,

This line is your problem:

UiApplication.getUiApplication () .pushScreen (vbox);

The problem and the solution is very well described in this thread. Check it out and let me know if it solved for you:

http://supportforums.BlackBerry.com/T5/Java-development/updating-UI-from-system-thread-UI-engine-ACC...

PopupScreen to dismiss

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