修改LabelField的尺寸（黑莓）

Question

下面的類是自定義標籤字段，它將一個位圖作爲背景。我重寫getprefferedwidth和getpreferredheight，這不會設置我的領域的高度和寬度？目前，寬度和高度沒有被正確設置

感謝

public class TimerLabelField extends LabelField { 

     private int colour; 
     private Bitmap backgroundBitmap; 

    public TimerLabelField(Object text, long style, Font font, int colour, 
      Bitmap backgroundBitmap) { 
     super(text, style); 
     this.colour = colour; 
     this.backgroundBitmap = backgroundBitmap; 
    } 

    protected void paint(Graphics graphics) { 

     if(backgroundBitmap != null){ 
      graphics.drawBitmap(0, 0, this.backgroundBitmap.getWidth(), this.backgroundBitmap.getHeight(), this.backgroundBitmap, 0, 0); 
     } 

     graphics.setColor(this.colour); 
     super.paint(graphics); 

    } 

    public int getPreferredWidth() 
    { 
     return this.backgroundBitmap.getWidth(); 
    } 

    public int getPreferredHeight() 
    { 
     return this.backgroundBitmap.getHeight(); 
    } 

Answer 1

您應該重寫layout(int width, int height)還有：

protected void layout(int width, int height) { 
    super.layout(width, height); 
    setExtent(Math.min(width, this.BackgroundBitmap.getWidth()), Math.min(height, this.Backgroundbitmap.getHeight()); 
}