[英]How can I get the icon to display for a file from a Java app?
Is it possible from a Java desktop app to find the icon to display for a given file, perhaps based on it's mime type? 是否可以从Java桌面应用程序中找到要为给定文件显示的图标,可能是基于它的mime类型? Specifically I want to ask the host OS for the icon to display so it can match what the user would expect to see. 具体来说,我想要求主机操作系统显示图标,以便它可以匹配用户期望看到的内容。
AS far as I know the only thing you can do is using the JTree's DefaultTreeCellRenderer. 据我所知,你唯一能做的就是使用JTree的DefaultTreeCellRenderer。 You can read more in the Java API . 您可以在Java API中阅读更多内容。
I'll give you a few examples here. 我在这里举几个例子。 I haven't used it in a while so you will need to dig a little deeper to get what you want. 我有一段时间没有使用它,所以你需要深入挖掘才能得到你想要的东西。
UIDefaults defaults = UIManager.getDefaults( );
Icon computerIcon = defaults.getIcon( "FileView.computerIcon" );
Icon floppyIcon = defaults.getIcon( "FileView.floppyDriveIcon" );
Icon diskIcon = defaults.getIcon( "FileView.hardDriveIcon" );
Icon fileIcon = defaults.getIcon( "FileView.fileIcon" );
Icon folderIcon = defaults.getIcon( "FileView.directoryIcon" );
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