如何在Java Gnome / GTK程序中使用Glade UI(.glade文件)?
作者:互联网
我在互联网上做了一项研究,寻找教程/文档来解释如何在Java Gnome项目中使用Glade中设计的UI,但没有运气.我已经知道如何使用Java Gnome / GTK从代码创建UI.无论如何,我想使用我在Java Gnome / Gtk项目中创建的Glade UI,但我不知道从哪里开始.请告诉我:
>我需要安装哪些软件包;
>如何将我用Glade(.glade文件)创建的UI与我的Java Gnome / Gtk项目(特别是在Eclipse中)集成;
>举个例子.
提前致谢.
这就是我的Glade UI的外观(只需点击图片即可看到更大):
这是上面UI的XML代码:
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<!-- interface-requires gtk+ 3.0 -->
<object class="GtkWindow" id="window1">
<property name="can_focus">False</property>
<property name="window_position">center</property>
<child>
<object class="GtkFixed" id="fixed1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkEntry" id="entry1">
<property name="width_request">162</property>
<property name="height_request">25</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="halign">start</property>
<property name="valign">end</property>
<property name="invisible_char">•</property>
</object>
<packing>
<property name="x">11</property>
<property name="y">49</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry2">
<property name="width_request">162</property>
<property name="height_request">25</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="halign">start</property>
<property name="valign">end</property>
<property name="invisible_char">•</property>
<property name="invisible_char_set">True</property>
</object>
<packing>
<property name="x">271</property>
<property name="y">49</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label">
<property name="height_request">25</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">*</property>
</object>
<packing>
<property name="x">216</property>
<property name="y">49</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button">
<property name="label" translatable="yes">Calculate!!!</property>
<property name="use_action_appearance">False</property>
<property name="width_request">84</property>
<property name="height_request">27</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_action_appearance">False</property>
</object>
<packing>
<property name="x">181</property>
<property name="y">93</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
解决方法:
好的,你需要:
> Init GTK库
>创建一个Builder对象
>检索窗口小部件
>显示窗口小部件
我假设您已经在Linux系统中安装了java-gnome库并在eclipse项目中导入了jar(项目属性 – java构建路径 – 添加外部jar – /usr/share/java/gtk.jar).
示例代码:
Gtk.init(args); //Init library
Builder b = new Builder(); //Create builder
b.addFromFile("filename.glade"); //Load layout from file
Window w = (Window) b.getObject("myWindowName"); //Retrieve an object
w.showAll(); //Show window
Gtk.main();
这是它应该工作的方式.如果要在对象上设置侦听器,例如按钮,您可以按照之前的窗口检索对象,然后:
button.connect(new Clicked() {
@Override
public void onClicked(Button arg0) {
// Do what you want
}
});
它适合你吗?嗯,这不适合我.
问题是我的代码在调用Builder.addFromFile(filename)时抛出异常
java.text.ParseException: Invalid object type `GtkLabel’
错误是关于树中的第一个元素.
经过深入研究后,我发现由于已知的bug从未修复过,您需要在使用之前预先定义每个小部件:在这种情况下只需调用
new Label();
在创建构建器之前.
显然,这不是以这种方式工作,并将在未来修复.
有关此问题的更多信息:
Thread on java-gnome-developer mailing list
Thread on Java-gnome-hackers mailing list
希望这可以帮助……
标签:ubuntu,java,user-interface,gtk,glade 来源: https://codeday.me/bug/20190529/1180040.html