BlackBerry Bitmap listener

Question

我有一個類似於下面的代碼，在mapfields這個mIcon上多次繪製。 如何將點擊偵聽器添加到此位圖？我使用的BB 5.0

public Bitmap mIcon; 
mIcon = Bitmap.getBitmapResource("pcture1.png"); 

protected void paint(Graphics g) { 


super.paint(g); 
     mDest = new XYRect(....); 
     g.drawBitmap(mDest, mIcon, 0, 0); 
} 

Answer 1

覆蓋BitmapField和修改isFocusable（），navigationClick（），keyChar（），和trackwheelClick（）方法。

public class ImageButtonField extends BitmapField 
{ 

    public ImageButtonField(Bitmap image) 
    { 
     super(image); 
    } 

    public boolean isFocusable() 
    { 
     return true; 
    } 

    protected boolean navigationClick(int status, int time) 
    { 
    fieldChangeNotify(0); 
    return true; 
    } 

    protected boolean trackwheelClick(int status, int time) 
    { 
    fieldChangeNotify(0); 
    return true; 
    } 

    protected boolean keyChar(char character, int status, int time) 
    { 
     if(Characters.ENTER == character || Characters.SPACE == character) 
     { 
     fieldChangeNotify(0); 
     return true; 
     } 
     return super.keyChar(character, status, time); 
    } 

}