Android合并兩張bitmap為一張

[java] /**  * 合并兩張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;  }