如何使用Java调整图像大小? [英] How do I resize an image with Java?

问题描述

我有一堆需要16x16版本的48x48图像，而不是存储16x16版本，我想即时调整它们的大小.我当前的代码如下所示(model.icon()返回48x48图片):

I have a bunch of 48x48 images that I need 16x16 versions of, and instead of storing the 16x16 versions, I want to resize them on the fly. My current code looks like this (model.icon() returns the 48x48 image):

Icon icon = model.icon();
Image image = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_RGB);
return new ImageIcon(image.getScaledInstance(16, 16, Image.SCALE_AREA_AVERAGING));

不幸的是，运行此代码时，我得到的是16x16黑色正方形而不是图像.

Unfortunately, when this code is run, I get a 16x16 black square instead of the image.

推荐答案

尝试一下.

ImageIcon icon = model.icon();
Image image = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_RGB);
image.getGraphics().drawImage(icon.getImage(), 0, 0, 16, 16, null);
return new ImageIcon(image);

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