我可以调整jlabel中图标的大小吗？

Question

Is there any property or any code that I can implement to make an icon inside a JLabel resizable. Or is there any other item which can store an image, that I could use to have a resizable image inside a JFrame ?

Answer 1

use this code :

 photo = new ImageIcon(UrlofPhoto); 
 Image im = photo.getImage();
 Image Newim = im.getScaledInstance(yourlabel.getWidth(),  yourlabel.getHeight(),Image.SCALE_SMOOTH);
 ImageIcon Newphoto=new ImageIcon(Newim);
 yourlabel.setIcon(Newphoto);

don't forget to set an initialised size to yourlabel

Answer 2

Generally, I would't suggest trying this with a JLabel as JLabel has a lot of other features you really don't want to messing with (alignment and text).

Generally, a better solution is to use a dedicated "image" panel, which you can provide additional control over to fine tune how you want the scaling to work.

For example

If you're really stuck on using JLabel , I would recommend attaching a ComponentListener to it and resizing the underlying image when ever it changes size. The problem with this is componentResized may be called repeatedly in quick succession, meaning you will need to devise some kind of coalescing algorithm that only reacts to the last event within a given period of time...

Answer 3

查看Darryl的“ 拉伸图标” ，它将动态缩放图标以填充标签。