如何将焦点设置在位图字段上，蓝色不可见，黑莓

发布于 2024-08-22 12:48:49 字数 728 浏览 6 评论 0原文

我正在使用包含小图像的位图字段。

当焦点位于该图像上时，不会出现焦点的蓝色，我如何设置焦点宽度和高度

我的代码::

contract_image_field = new BitmapField(contract_image,Field.FOCUSABLE)
 {
       public void getFocusRect(XYRect rect) 
      {
       rect.width=0;
       rect.height=0;
       //super.getFocusRect(rect);
      }
       protected void onFocus(int direction) 
       {
        myScreen.this.invalidate();
      super.onFocus(direction);
     }
       protected void onUnfocus() 
       {
        myScreen.this.invalidate();
      super.onUnfocus();
     }
      };
      contract_image_field.setBitmap(contract_image);

这是我使用图像字段的方式，

虽然我的图像是可点击的，但我看不到蓝色（我想要，请帮忙！！！）

改变 getFocusRect 中的宽度和高度值甚至不能解决问题

原文

i am using a bitmap field that contains a small image.

when focus comes on that image then blue color of the focus does not appears,how can i set the focus width and height

my code::

contract_image_field = new BitmapField(contract_image,Field.FOCUSABLE)
 {
       public void getFocusRect(XYRect rect) 
      {
       rect.width=0;
       rect.height=0;
       //super.getFocusRect(rect);
      }
       protected void onFocus(int direction) 
       {
        myScreen.this.invalidate();
      super.onFocus(direction);
     }
       protected void onUnfocus() 
       {
        myScreen.this.invalidate();
      super.onUnfocus();
     }
      };
      contract_image_field.setBitmap(contract_image);

this is the way how i work with image field,

though my image is clickable but i cant see that blue color(i want that please help!!!)

changing values of width and height in getFocusRect does not even solves the problem

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断桥再见 2024-08-29 12:48:49

您还可以避免增加场地范围；
使用以下代码：

BitmapField bitmapField = new BitmapField(bitmap, BitmapField.FOCUSABLE)
{
     protected void drawFocus(Graphics graphics, boolean on) 
     {
          setSpace(5, 5);
          super.drawFocus(graphics, on);
     }       
};

You can also avoid increasing the field extent;
using the following code:

BitmapField bitmapField = new BitmapField(bitmap, BitmapField.FOCUSABLE)
{
     protected void drawFocus(Graphics graphics, boolean on) 
     {
          setSpace(5, 5);
          super.drawFocus(graphics, on);
     }       
};

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半岛未凉 2024-08-29 12:48:49

实际上焦点就在那里，但你看不到，因为焦点区域与场的整个范围相同。如果你想看到焦点矩形，请增加视野范围。

BitmapField  bitmapField = new BitmapField(bitmap,Field.FOCUSABLE){
            protected void layout(int width, int height) {
                setExtent(bitmap.getWidth()+10, bitmap.getHeight()+10);
            }

        };

actually focus is there but you can't see because focus region is the same as the field's entire extent. if you want to see focus rect increase the field extent.

BitmapField  bitmapField = new BitmapField(bitmap,Field.FOCUSABLE){
            protected void layout(int width, int height) {
                setExtent(bitmap.getWidth()+10, bitmap.getHeight()+10);
            }

        };

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