Screen Popup problem

Hello

I need to display a popup with a message and two buttons and based on the selection of button I want to do an action.

I am able to display the popup screen with buttons. But the buttons do not update.

Please find the code below. Can someone tell me where I was wrong.

Thanks in advance.

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

class RegPopup extends Screen {

private final static int _CUSTOM_SIZE = 150;
private final static int _ALPHA = 0xBF; // 75% alpha
private final static int _X = ( Display.getWidth() - _CUSTOM_SIZE ) >> 1;
private final static int _Y = ( Display.getHeight() - _CUSTOM_SIZE ) >> 1; 

private LabelField wait = null;
private LabelField status = null;
VerticalFieldManager vm = null;
ButtonField try_button = null;
ButtonField exit_button = null;

RegPopup() { 

super( new VerticalFieldManager(VerticalFieldManager.VERTICAL _SCROLL | VerticalFieldManager.VERTICAL_SCROLLBAR));
init();
}

private void init(){
wait = new LabelField( "Please wait ..." );
this.add(wait);
//this.setFocus();
}
public void setMessage(String message){
if(message != null){
status = new LabelField(message);
this.add(status);
this.add(new RichTextField(Field.NON_FOCUSABLE));
addButton();
changeMessage();
}
}

private void addButton(){
vm = (VerticalFieldManager)this.getDelegate();
//vm.setVerticalScroll(0);
//vm.setFocus();
HorizontalFieldManager midManager = new HorizontalFieldManager(HorizontalFieldManager.FIEL D_HCENTER | HorizontalFieldManager.HORIZONTAL_SCROLL);
try_button = new ButtonField("Try Again");
exit_button = new ButtonField("Exit");
// try_button.setFocus();

try_button.setChangeListener(new FieldChangeListener(){
public void fieldChanged(Field field, int context) {
ButtonField buttonField = (ButtonField) field;

closePopup();

}
});
exit_button .setChangeListener(new FieldChangeListener(){
public void fieldChanged(Field field, int context) {
ButtonField buttonField = (ButtonField) field;

//System.exit(0);

}
});

// midManager.setFocus();
midManager.add(try_button);
midManager.add(exit_button);

vm.add(midManager);

//this.add(vm);

}
private void closePopup(){
this.close();
}
/**
* This method repaints the screen with new Message
* Added by Koka Phani
*/
private void changeMessage(){

final Screen scr = this.getScreen();
if(scr!= null){
UiApplication.getUiApplication().invokeLater (new Runnable() {

public void run(){
try{ 

scr.invalidate();

}catch(Exception e){}
}
});
} 

}
protected void sublayout( int width, int height ) {
setExtent( _CUSTOM_SIZE, _CUSTOM_SIZE );
setPosition( _X, _Y );
layoutDelegate( _CUSTOM_SIZE, _CUSTOM_SIZE );
}

protected void paintBackground( Graphics g ) {
XYRect myExtent = getExtent();
int color = g.getColor();
int alpha = g.getGlobalAlpha();
g.setGlobalAlpha( _ALPHA );
g.setColor( Color.BLACK );
g.fillRect( 0, 0, myExtent.width, myExtent.height );
g.setColor( Color.WHITE);
g.setGlobalAlpha( alpha );
}

public boolean onClose(){
return false;
}
}

Hi all

Thanks for your time. I found the problem. Stupid mistake not having not try catch blocks to debug.

The problem is that I update the screen with calling the call later.

Once again thank you for your time.

Concerning

Koka

Tags: BlackBerry Developers

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