The screen does not

Hi all
I am new to blackberry programming.
I am trying to display a screen on click of a button. I managed to invoke a single screen.

I use the Blackberry Pearl 8100 Simulator to test.
Click button 2 "Don'ts" screen.
I followed the same procedure to call.
Help, please.

Hi John,.

Maybe you haven't added changeListener with the key.

For example:

ButtonField button1 = new ButtonField ("TestButton1");
Button1.setChangeListener (this);

I send you a sample class.

Hope this could help you.

import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.UiApplication;

class TestScreen extends MainScreen implements FieldChangeListener
{
    TestScreen()
    {
        ButtonField button1 = new ButtonField("TestButton1");
        button1.setChangeListener(this);

        ButtonField button2 = new ButtonField("TestButton2");
        button2.setChangeListener(this);

        this.add(button1);
        this.add(button2);
    }

     /**
     * FieldChangeListener implementation.
     * indicated what button was clicked.
     * buttons are distinguished by their label
     * net.rim.device.api.ui.FieldChangeListener
     */
    public void fieldChanged(Field field, int context)
    {
        String text = ((ButtonField)field).getLabel();
        if(text.equals("TestButton1"))
        {
           UiApplication.getUiApplication().pushScreen(new TestScreen1());
        }
        else if(text.equals("TestButton2"))
        {
           UiApplication.getUiApplication().pushScreen(new  TestScreen12());
        }
        else
        {
        }
    }
}

Concerning

Bika

Tags: BlackBerry Developers

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