黑莓可點擊位圖字段

Question

我想創建一個自定義位圖字段用於將圖標放在我的菜單屏幕上。我希望他們被點擊。我也想給圖標的X和Y座標作爲參數給Custom BitmapField。我怎樣才能做到這一點？

Answer 1

public class CustomMenuButtonField extends Field{ 
Bitmap normal,focused; 
public CustomMenuButtonField(String bitmap1, String bitmap2) { 

    normal = Bitmap.getBitmapResource(bitmap1); 
    focused = Bitmap.getBitmapResource(bitmap2); 

} 

protected void layout(int width, int height) { 
    setExtent(width, height); // Set them according to your design 
} 

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

public boolean isFocusable() { 
    return true; 
} 

protected void paint(Graphics graphics) { 

    if(isFocus()) 
    { 
     graphics.drawBitmap(0, 0, width, height, focused, 0, 0); 
    } 
    else 
    { 
     graphics.drawBitmap(0, 0, width, height, normal, 0, 0); 
    } 

} 

}

如果你想給座標參數，添加它們。高度和寬度取決於你..