User interface 黑莓-自定义BubbleChartField

我需要开发一个黑莓应用程序，该应用程序应该显示气泡图。
如何为此实现自定义控件？

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谢谢。

更新这是知识库

你的问题应该更具体、更完整……
好吧，我只是想告诉你方向：

public class BubbleChart extends Field {

    int mWidth = Display.getWidth();
    int mHeight = Display.getHeight();

    int[] mXpos = null;
    int[] mYpos = null;
    int[] mRad = null;
    int[] mColor = null;

    public BubbleChart(int[] xPos, int[] yPos, int[] rad, int[] colors) {
        this(xPos, yPos, rad);
        mColor = colors;
    }

    public BubbleChart(int[] xPos, int[] yPos, int[] rad) {
        mXpos = xPos;
        mYpos = yPos;
        mRad = rad;
    }

    public int getPreferredWidth() {
        return mWidth;
    }

    public int getPreferredHeight() {
        return mHeight;
    }

    protected void layout(int width, int height) {
        setExtent(getPreferredWidth(), getPreferredHeight());
    }

   protected void paint( Graphics graphics )
   {
       for( int i = 0, cnt = mXpos.length; i < cnt; i++ )
       {
           if( null != mColor )
               graphics.setColor( mColor[ i ] );
           else
               graphics.setColor( Color.WHITE );
           drawFilledCircle( graphics, mXpos[ i ], mYpos[ i ], mRad[ i ] );
           graphics.setColor( Color.BLACK );
           drawCircle( graphics, mXpos[ i ], mYpos[ i ], mRad[ i ] );
       }
   }

   private void drawFilledCircle( Graphics g, int x, int y, int r )
   {
       g.fillEllipse( x, y, x + r, y, x, y + r, 0, 360 );
   }

   private void drawCircle( Graphics g, int x, int y, int r )
   {
       g.drawEllipse( x, y, x + r, y, x, y + r, 0, 360 );
   }
}

---

更新这是知识库

你的问题应该更具体、更完整……
好吧，我只是想告诉你方向：

public class BubbleChart extends Field {

    int mWidth = Display.getWidth();
    int mHeight = Display.getHeight();

    int[] mXpos = null;
    int[] mYpos = null;
    int[] mRad = null;
    int[] mColor = null;

    public BubbleChart(int[] xPos, int[] yPos, int[] rad, int[] colors) {
        this(xPos, yPos, rad);
        mColor = colors;
    }

    public BubbleChart(int[] xPos, int[] yPos, int[] rad) {
        mXpos = xPos;
        mYpos = yPos;
        mRad = rad;
    }

    public int getPreferredWidth() {
        return mWidth;
    }

    public int getPreferredHeight() {
        return mHeight;
    }

    protected void layout(int width, int height) {
        setExtent(getPreferredWidth(), getPreferredHeight());
    }

   protected void paint( Graphics graphics )
   {
       for( int i = 0, cnt = mXpos.length; i < cnt; i++ )
       {
           if( null != mColor )
               graphics.setColor( mColor[ i ] );
           else
               graphics.setColor( Color.WHITE );
           drawFilledCircle( graphics, mXpos[ i ], mYpos[ i ], mRad[ i ] );
           graphics.setColor( Color.BLACK );
           drawCircle( graphics, mXpos[ i ], mYpos[ i ], mRad[ i ] );
       }
   }

   private void drawFilledCircle( Graphics g, int x, int y, int r )
   {
       g.fillEllipse( x, y, x + r, y, x, y + r, 0, 360 );
   }

   private void drawCircle( Graphics g, int x, int y, int r )
   {
       g.drawEllipse( x, y, x + r, y, x, y + r, 0, 360 );
   }
}