BlackBerry – Custom label field
-
Paresh Mayani
- November 23, 2011
- 2 min read
- No Comments
Problem: How do i define Custom label field in BlackBerry?
Solution:
customLabelField.java
package mypackage;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.FontFamily;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Ui;
public class customLabelField extends Field
{
private String label;
public customLabelField(String label, int foregroundColor,
int backgroundColor)
{
super();
this.label = label;
this.foregroundColor = foregroundColor;
this.backgroundColor = backgroundColor;
}
private int foregroundColor;
private int backgroundColor;
protected void layout(int width, int height) {
// TODO Auto-generated method stub
setExtent(width, getFont().getHeight());
}
protected void paint(Graphics graphics) {
// TODO Auto-generated method stub
graphics.setBackgroundColor(backgroundColor);
graphics.clear();
graphics.setFont(setMyFont());
graphics.setColor(foregroundColor);
graphics.drawText(label, 0, 0);
}
// Get font for the label field
public Font setMyFont()
{
try {
FontFamily alphaSansFamily = FontFamily.forName("BBAlpha Serif");
Font appFont = alphaSansFamily.getFont(Font.PLAIN, 9, Ui.UNITS_pt);
return appFont;
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
After defining this class, you just need to add the custom label field inside your main screen:
// adding custom field
add(new customLabelField("This is the demo of creating custom field", Color.WHITE, Color.GREEN));
