如何放置 .getScaledInstance [英] How to put .getScaledInstance

问题描述

我正在制作一个图书馆系统，用户可以在其中输入图像.但是，图像不会根据 jlabel 调整大小.我不知道如何将 .getScaledInstance 放在我的图像图标上.你能告诉我怎么做吗?

I am making a library system where the user can input images. However, the images don't resize according to the jlabel. I don't know how to put .getScaledInstance on my image icon. Can you tell me how?

format=new ImageIcon (bookImage);
lblImage.setIcon(format);

感谢您的回答.任何帮助将不胜感激.

Thank you for your answers. Any help will be appreciated.

推荐答案

你可以在缩放实例的同时使用标签的高度和宽度.

you can use label height and width for the same while you get scaled Instance.

Image dimg = img.getScaledInstance(label.getWidth(), label.getHeight(),
        Image.SCALE_SMOOTH);

从中创建 imageIcon.

Create imageIcon from it.

ImageIcon imageIcon = new ImageIcon(dimg);

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