Java Development

[nurhanisah]

Hi.

I am creating a dialog box which allows users to key in some text inside. I am building on version 4.1.  After keying in the text, user would choose either Ok or Cancel. Here is the code for it:

final class TestDialog extends Dialog{

        private EditField userNameField;
        private ButtonField okButton;
        private ButtonField cancelButton;

        public TestDialog(String choices[],int values[]){
            super("Enter a username", choices,values,Dialog.OK, Bitmap.getPredefinedBitmap(Bitmap.QUESTION), Dialog.GLOBAL_STATUS);
            userNameField = new EditField("User Name: ", "", 50, EditField.EDITABLE | EditField.FILTER_PHONE);
            net.rim.device.api.ui.Manager delegate = getDelegate();
            if( delegate instanceof DialogFieldManager){
                DialogFieldManager dfm = (DialogFieldManager)delegate;
                net.rim.device.api.ui.Manager manager =dfm.getCustomManager();
                if( manager != null ){
                    manager.insert(userNameField, 0);
                }
            }
        }    

        public String getUsernameFromField(){
          return userNameField.getText();
        }

    }

I am however, facing problems in retrieving which button user has selected (OK or CANCEL). When selecting OK, nothing happens. When selecting CANCEL,I would get an ArrayIndexOutOfBounds error.

 

String choices[] = {"Ok","Cancel"};
int values[] = {Dialog.OK,Dialog.CANCEL};
            
TestDialog pw = new TestDialog(choices,values);
System.out.println(""+pw.doModal());

if (pw.doModal() == Dialog.OK) {
...
}

Does any of you have any idea about this? Thanks in advance.

Hanisah

[MSohm]

You are passing Dialog.OK into the constructor for Dialog in the parameter that specifies the default choice.  This choice value is the index of the array (choices[] in your case) that you want selected by default.  Dialog.OK is a constant for the Dialog class, and won't match up with your array position.

I recommend having a look at the VoiceNotesDemoDialog class that is part of the voicenotesdemo included with the BlackBerry JDE.  It is an example of a custom Dialog that prompts for user input.

[zhijunsheng]

I searched JDE 4.2.1/4.6.0/4.7.0 but failed to find any demo with name "voicenotesdem" or similar.  Where is it?  Thanks!

[bikas]

Try with the following:

class TestScreen extends MainScreen
{
    private Dialog diag;
    public TestScreen()
    {
        String choices[] = {"Ok","Cancel"};
        int values[] = {Dialog.OK,Dialog.CANCEL};
                    
        diag = new TestDialog(choices,values);
                
        UiApplication.getUiApplication().invokeLater(new Runnable()
        {
            public void run()
            {
                int iResponse = diag.doModal();
                if(iResponse == 0)
                {
                    System.out.println("OK Pressed");
                }
                else
                {
                    System.out.println("Cancel Presses");
                }   
            }
        });          
    }
}

Regards

Bikas 

[peter_strange]

Minor point, possibly more accurate to use:

if(iResponse == Dialog.OK)

[sreid55]

I realize this thread is old, but I just came across it and did figure out how to avoid the array out of bounds exception.  

Add an additional value to the front of the values[] array to be a 'placeholder' for for editfield.

int values[] = {0,Dialog.OK,Dialog.CANCEL};