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我正在开发自定义工具栏经理，但我想调整的字段排列为中心不是左对齐，任何意见黑莓UI工具栏：字段对齐
下面是工具栏的代码
package galaxy.bb.ui.container;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.XYEdges;
import net.rim.device.api.ui.container.HorizontalFieldManager;
import net.rim.device.api.ui.decor.Background;
import net.rim.device.api.ui.decor.BackgroundFactory;
import net.rim.device.api.ui.decor.Border;
import net.rim.device.api.ui.decor.BorderFactory;
public class ToolBarManager extends HorizontalFieldManager {
private int bgColor = Color.BLACK;
private int borderColor = Color.WHITE;
private int borderStyle= Border.STYLE_FILLED;
public ToolBarManager(){
super(USE_ALL_WIDTH);
}
public ToolBarManager(int bgColor) {
super(USE_ALL_WIDTH);
this.bgColor = bgColor;
}
public ToolBarManager(int bgColor, int borderStyle) {
super(USE_ALL_WIDTH);
this.bgColor = bgColor;
this.borderStyle = borderStyle;
}
public int getBgColor() {
return bgColor;
}
public void setBgColor(int bgColor) {
this.bgColor = bgColor;
}
public int getBorderColor() {
return borderColor;
}
public void setBorderColor(int borderColor) {
this.borderColor = borderColor;
}
public int getBorderStyle() {
return borderStyle;
}
public void setBorderStyle(int borderStyle) {
this.borderStyle = borderStyle;
}
protected void paint(Graphics graphics) {
super.paint(graphics);
XYEdges padding = new XYEdges(5, 5, 5, 5);
Border roundedBorder = BorderFactory.createRoundedBorder(padding,
borderColor, borderStyle);
this.setBorder(roundedBorder);
Background bg = BackgroundFactory.createSolidBackground(bgColor);
this.setBackground(bg);
}
}