TextField horizontal-scrolling

Question

Hi i have implemented scrolling text horizontally through this link LabelField Marquee. But i have one problem,the text is scrolling quite good but its been over-written on the original text which was added.Can anyone have any idea how to cope from this problem? I also tried to refresh the view by invalidate() but of no use. i have added the screenshot of the problem which i am facing.

Any help would be appreciable.

Thank you.

Answer 1

I would suggest you to change paint method to next:

 public void paint(Graphics graphics) {
    currentText = this.getText();
    if (currentChar < currentText.length()) {
        currentText = currentText.substring(currentChar);

    }
    graphics.drawText(currentText, 0, 0, DrawStyle.ELLIPSIS, 200);
}

So don't call super.paint() in your paint.

Answer 2

I've rewritten (in a more simple way) the answer you linked. It works fine.

import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.DrawStyle;
import java.util.Timer;
import java.util.TimerTask;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;

public class MyScreen extends MainScreen {

    public MyScreen() {

        super();

        MarqueeLabel testLabel2 = new MarqueeLabel("This is a long long " +
                "long long long long long long long long long long long " +
                "long long marquee", Field.FOCUSABLE);
        add(testLabel2);

    }

    class MarqueeLabel extends LabelField {

        // Here MarqueeLabel code from your SO linked example

    }

}