如何在Codename One中应用多个布局？-Java 学习之路

我一直在尝试在Codename One中自定义业务主题 . 到目前为止，我添加了额外的按钮 . 现在我试图让这些按钮受到y轴boxlayout的约束，但我现在得到的是 IllegalArgumentException . 我已将表单设置为边框布局：

Form hi = new Form("Welcome", new BorderLayout(BorderLayout.CENTER_BEHAVIOR_CENTER_ABSOLUTE));
Button Customer = new Button("Customer");
Button gpsProduct = new Button("Find A product Near You");
Button learnMore = new Button("Learn More");
Button Website = new Button("Visit Our Website");
hi.add(BoxLayout.Y_AXIS, Customer).
   add(BoxLayout.Y_AXIS, learnMore).
   add(BoxLayout.Y_AXIS, gpsProduct).
   add(BoxLayout.Y_AXIS, Website);
hi.show();

1 回答

框布局Y不是边框布局的约束 . 目前还不清楚你想要看起来如何，但我猜你想要这样的东西将一个接一个地安排组件：

Form hi = new Form("Welcome", BoxLayout.y());
Button Customer = new Button("Customer");
Button gpsProduct = new Button("Find A product Near You");
Button learnMore = new Button("Learn More");
Button Website = new Button("Visit Our Website");
hi.add(Customer).
   add(learnMore).
   add(gpsProduct).
   add(Website);
hi.show();

以下是将框放置在边框布局父级中的两个嵌套示例：

Form hi = new Form("Welcome", new BorderLayout());
Button Customer = new Button("Customer");
Button gpsProduct = new Button("Find A product Near You");
Button learnMore = new Button("Learn More");
Button Website = new Button("Visit Our Website");
Container box = new Container(BoxLayout.y());
box.add(Customer).
   add(learnMore).
   add(gpsProduct).
   add(Website);
hi.add(BorderLayout.CENTER, box);
hi.show();

这可以用速记写成：

Form hi = new Form("Welcome", new BorderLayout());
Button Customer = new Button("Customer");
Button gpsProduct = new Button("Find A product Near You");
Button learnMore = new Button("Learn More");
Button Website = new Button("Visit Our Website");
hi.add(BorderLayout.CENTER, 
      BoxLayout.encloseY(Customer, learnMore, gpsProduct, Website););
hi.show();

回复于 2024-05-02T19:56:06+08:00

如何在Codename One中应用多个布局？

1 回答

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