Android合並兩張bitmap為一張

[java]  /**   * 合並兩張bitmap為一張   * @param background   * @param foreground   * @return Bitmap   */   public static Bitmap combineBitmap(Bitmap background, Bitmap foreground) {       if (background == null) {           return null;       }       int bgWidth = background.getWidth();       int bgHeight = background.getHeight();       int fgWidth = foreground.getWidth();       int fgHeight = foreground.getHeight();       Bitmap newmap = Bitmap  www.2cto.com             .createBitmap(bgWidth, bgHeight, Config.ARGB_8888);       Canvas canvas = new Canvas(newmap);       canvas.drawBitmap(background, 0, 0, null);       canvas.drawBitmap(foreground, (bgWidth - fgWidth) / 2,               (bgHeight - fgHeight) / 2, null);       canvas.save(Canvas.ALL_SAVE_FLAG);       canvas.restore();       return newmap;   }