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Old 03-11-2010, 04:28 PM   #1 (permalink)
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Default Stupid java question, remove labelfield from MainScreen

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Hello

I have a problem (again
I display labelfield, after click on this labelfield, I want to clear it, but I don't know how can I do that.

Please help me
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Old 03-11-2010, 06:04 PM   #2 (permalink)
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Hi Milia,

This class which extends MainScreen demonstrates how to do what you have asked. Are you familiar with FieldChangeListener? I would be happy to clarify if you have any questions.

Code:
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.Keypad;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;

public class LabelRemovingMainscreen extends MainScreen implements FieldChangeListener {
	LabelField labelField;
	public LabelRemovingMainscreen() {
		labelField = new LabelField("Click on this field to remove it!", Field.FOCUSABLE) {
			protected boolean navigationClick(int status, int time) {
				fieldChangeNotify(0);
				return true;
			}			
			protected boolean keyChar(char character, int status, int time) {
				if (character == Keypad.KEY_ENTER) {
					fieldChangeNotify(0);
					return true;
				}
				return super.keyChar(character, status, time);
			}
		};
		
		labelField.setChangeListener(this);
		add(labelField);
	}
	public void fieldChanged(Field field, int context) {
		if (field == labelField) {
			delete(labelField);
		}
	}
}
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