我在我的Blackberry程序中使用了BasicEditField,但是BasicEditField没有显示任何边框。因此,我想自定义BasicEditField以显示边框,请提供一些代码片段。
我在我的Blackberry程序中使用了BasicEditField,但是BasicEditField没有显示任何边框。因此,我想自定义BasicEditField以显示边框,请提供一些代码片段。
如果您使用的是4.6 RIM操作系统,为什么不使用Border呢?
BasicEditField roundedBorderEdit = new BasicEditField();
XYEdges padding = new XYEdges(15, 15, 15, 15);
int color = Color.CRIMSON;
int lineStyle = Border.STYLE_DOTTED;
Border roundedBorder = BorderFactory.createRoundedBorder(padding,
color, lineStyle);
roundedBorderEdit.setBorder(roundedBorder);
BasicEditField bevelBorderEdit = new BasicEditField();
XYEdges edges = new XYEdges(10, 10, 10, 10);
XYEdges outerColors = new XYEdges(Color.BLACK, Color.WHITE,
Color.BLACK, Color.WHITE);
XYEdges innerColors = new XYEdges(Color.WHITE, Color.BLACK,
Color.WHITE, Color.BLACK);
Border bevelBorder = BorderFactory.createBevelBorder(edges,
outerColors, innerColors);
bevelBorderEdit.setBorder(bevelBorder);
如果你的黑莓操作系统版本为4.5或更早,你可以在 paint 事件中尝试为位图添加边框:
class BorderedEdit extends BasicEditField
{
Bitmap mBorder = null;
public BorderedEdit(Bitmap borderBitmap) {
mBorder = borderBitmap;
}
protected void paint(Graphics graphics) {
graphics.drawBitmap(0, 0, mBorder.getWidth(),
mBorder.getHeight(), mBorder, 0, 0);
super.paint(graphics);
}
}
将paint方法重写如下:
editField= new BasicEditField(..parameters here..) {
public void paint(Graphics g) {
super.paint(g);
g.drawRect(0, 0, getWidth(), getHeight());
}
};