Change the color of the text on the button click

Hi, how I would change the text with color while the application is running?

For example, when the user clicks a button, how can I change the color of the editfield with already inserted text?

I realize that I could add the editifled with different colors, but I was wondering if there is a way to do this without adding new editfield - like refreshing the editfield with different text color.

Help is very appreciated!

First, create your own custom class that extends EditField.

It can be as simple as this:

public class MyEditField extends EditField {
  private int _color = Color.BLACK;

  public void setFontColor(int color) {
    _color = color;
    invalidate();
  }

  protected void paint(Graphics g) {
    int prevColor = g.getColor();
    g.setColor(_color);
    super.paint(g);
    g.setColor(prevColor);
  }
}

Once you have this class, you can use it like this:

final MyEditField textEntryArea = new MyEditField(...); // any EditField constructor can be used

...
FieldChangeListener buttonListener = new FieldChangeListener() {
  public void fieldChanged(Field field, int context) {
    if (field == setToRedButton) {
      textEntryArea.setFontColor(Color.RED);
    } else if (field == setToBlueButton) {
      textEntryArea.setFontColor(Color.BLUE);
    }
    // etc.
  }
};
...
setToRedButton.setChangeListener(buttonListener);
setToBlueButton.setChangeListener(buttonListener);
...

Edit: fixed a few typos.

Tags: BlackBerry Developers

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