android 屏幕截图

public Bitmap getCanvasBmp()
{
intw = CDisplay.getCurScreenWid();
inth = CDisplay.getCurScreenHei();
BitmapcanvasBmp = Bitmap.createBitmap( w, h, Config.ARGB_8888 );
Canvascn = new Canvas(canvasBmp);
doDraw(cn);
cn.save(Canvas.ALL_SAVE_FLAG);
cn.restore();
returncanvasBmp;
}