如何在CN1中编写iPhone样式的弹出菜单？ [英] How to code an iPhone style popup menu in CN1?

问题描述

它以前可能已经被介绍过，但是我什么都没用Google搜索。制作附有图片的iPhone样式的弹出选择菜单的最佳方法是什么？我已经尝试过使用对话框，但是我还没有找到添加 Commands 的优雅方法。很好，它们都触发了动作并同时关闭了对话框。 ComponentGroup 不支持单独显示取消条目。

It has probably been covered before, but I couldn’t google anything. What is the best approach for making an iPhone-style pop-up selection menu like attached picture? I've tried with a Dialog, but I haven't found an elegant way to add the Commands so they appear nicely and both trigger the action and close the dialog at the same time. And showing a Cancel entry separately is not supported by a ComponentGroup.

推荐答案

请参见以下示例：

Form hi = new Form("Pop");
Button pop = new Button("Pop");
pop.addActionListener(e -> {
    Dialog dlg = new Dialog();

    // makes the dialog transparent
    dlg.setDialogUIID("Container");
    dlg.setLayout(BoxLayout.y());

    Command optionACmd = new Command("Option A");
    Command optionBCmd = new Command("Option B");
    Command optionCCmd = new Command("Option C");
    Command cancelCmd = new Command("Cancel");

    dlg.add(
            ComponentGroup.enclose(
                    new Button(optionACmd), 
                    new Button(optionBCmd), 
                    new Button(optionCCmd)
                    )).
            add(ComponentGroup.enclose(new Button(cancelCmd)));

    Command result = dlg.showStretched(BorderLayout.SOUTH, true);
    ToastBar.showMessage("Command " + result.getCommandName(), FontImage.MATERIAL_INFO);
});
hi.add(pop);
hi.show();

结果如下：

< a href = https://i.stack.imgur.com/pYbU8.png rel = nofollow noreferrer>

这篇关于如何在CN1中编写iPhone样式的弹出菜单？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！