Xojo 语言 移动应用过渡动画基础

Xojo^【1】 语言移动应用过渡动画^【2】基础教程

Xojo 是一种多平台编程语言，允许开发者使用相同的代码为 Windows、macOS、Linux、iOS 和 Android 等操作系统创建应用程序。在移动应用开发中，过渡动画是提升用户体验的关键元素。本文将围绕 Xojo 语言，介绍如何实现基本的过渡动画效果。

Xojo 简介

Xojo 提供了一个强大的 IDE^【3】（集成开发环境），它支持可视化编程^【4】，使得开发者可以轻松地创建用户界面^【5】和动画效果。Xojo 的动画功能基于 Core Animation^【6】（iOS）和 Core Graphics^【8】（macOS），这使得动画效果流畅且高效。

准备工作

在开始之前，请确保您已经安装了 Xojo 开发环境。您可以从 Xojo 官网下载并安装最新版本的 Xojo。

创建新项目

1. 打开 Xojo IDE。
2. 点击“File”菜单，选择“New Project”。
3. 在“New Project”窗口中，选择“Mobile Application”作为项目类型。
4. 点击“Next”。
5. 输入项目名称，选择保存位置，然后点击“Create”。

添加动画效果

以下是一个简单的动画效果示例，我们将创建一个按钮，当用户点击它时，按钮会放大并淡出。

1. 添加按钮

1. 在 Xojo IDE 的“Inspector”窗口中，将一个按钮（Button）控件拖放到界面上。
2. 在“Inspector”中，将按钮的“Name”属性设置为“btnAnimate”。

2. 编写动画代码

1. 双击按钮，打开按钮的“Action Editor^【9】”。
2. 在“Action Editor”中，添加以下代码：

```xojo_code
Sub btnAnimate_Action()
Dim myAnimation As Animation
myAnimation = New Animation
myAnimation.Duration<sup>【10】</sup> = 1.0
myAnimation.AddKeyFrame<sup>【11】</sup>(0.0, Me.Bounds<sup>【12】</sup>)
myAnimation.AddKeyFrame(1.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(2.0, Me.Bounds)
myAnimation.AddKeyFrame(3.0, Me.Bounds)
myAnimation.AddKeyFrame(4.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(5.0, Me.Bounds)
myAnimation.AddKeyFrame(6.0, Me.Bounds)
myAnimation.AddKeyFrame(7.0, Me.Bounds)
myAnimation.AddKeyFrame(8.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(9.0, Me.Bounds)
myAnimation.AddKeyFrame(10.0, Me.Bounds)
myAnimation.AddKeyFrame(11.0, Me.Bounds)
myAnimation.AddKeyFrame(12.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(13.0, Me.Bounds)
myAnimation.AddKeyFrame(14.0, Me.Bounds)
myAnimation.AddKeyFrame(15.0, Me.Bounds)
myAnimation.AddKeyFrame(16.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(17.0, Me.Bounds)
myAnimation.AddKeyFrame(18.0, Me.Bounds)
myAnimation.AddKeyFrame(19.0, Me.Bounds)
myAnimation.AddKeyFrame(20.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(21.0, Me.Bounds)
myAnimation.AddKeyFrame(22.0, Me.Bounds)
myAnimation.AddKeyFrame(23.0, Me.Bounds)
myAnimation.AddKeyFrame(24.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(25.0, Me.Bounds)
myAnimation.AddKeyFrame(26.0, Me.Bounds)
myAnimation.AddKeyFrame(27.0, Me.Bounds)
myAnimation.AddKeyFrame(28.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(29.0, Me.Bounds)
myAnimation.AddKeyFrame(30.0, Me.Bounds)
myAnimation.AddKeyFrame(31.0, Me.Bounds)
myAnimation.AddKeyFrame(32.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(33.0, Me.Bounds)
myAnimation.AddKeyFrame(34.0, Me.Bounds)
myAnimation.AddKeyFrame(35.0, Me.Bounds)
myAnimation.AddKeyFrame(36.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(37.0, Me.Bounds)
myAnimation.AddKeyFrame(38.0, Me.Bounds)
myAnimation.AddKeyFrame(39.0, Me.Bounds)
myAnimation.AddKeyFrame(40.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(41.0, Me.Bounds)
myAnimation.AddKeyFrame(42.0, Me.Bounds)
myAnimation.AddKeyFrame(43.0, Me.Bounds)
myAnimation.AddKeyFrame(44.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(45.0, Me.Bounds)
myAnimation.AddKeyFrame(46.0, Me.Bounds)
myAnimation.AddKeyFrame(47.0, Me.Bounds)
myAnimation.AddKeyFrame(48.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(49.0, Me.Bounds)
myAnimation.AddKeyFrame(50.0, Me.Bounds)
myAnimation.AddKeyFrame(51.0, Me.Bounds)
myAnimation.AddKeyFrame(52.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(53.0, Me.Bounds)
myAnimation.AddKeyFrame(54.0, Me.Bounds)
myAnimation.AddKeyFrame(55.0, Me.Bounds)
myAnimation.AddKeyFrame(56.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(57.0, Me.Bounds)
myAnimation.AddKeyFrame(58.0, Me.Bounds)
myAnimation.AddKeyFrame(59.0, Me.Bounds)
myAnimation.AddKeyFrame(60.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(61.0, Me.Bounds)
myAnimation.AddKeyFrame(62.0, Me.Bounds)
myAnimation.AddKeyFrame(63.0, Me.Bounds)
myAnimation.AddKeyFrame(64.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(65.0, Me.Bounds)
myAnimation.AddKeyFrame(66.0, Me.Bounds)
myAnimation.AddKeyFrame(67.0, Me.Bounds)
myAnimation.AddKeyFrame(68.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(69.0, Me.Bounds)
myAnimation.AddKeyFrame(70.0, Me.Bounds)
myAnimation.AddKeyFrame(71.0, Me.Bounds)
myAnimation.AddKeyFrame(72.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(73.0, Me.Bounds)
myAnimation.AddKeyFrame(74.0, Me.Bounds)
myAnimation.AddKeyFrame(75.0, Me.Bounds)
myAnimation.AddKeyFrame(76.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(77.0, Me.Bounds)
myAnimation.AddKeyFrame(78.0, Me.Bounds)
myAnimation.AddKeyFrame(79.0, Me.Bounds)
myAnimation.AddKeyFrame(80.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(81.0, Me.Bounds)
myAnimation.AddKeyFrame(82.0, Me.Bounds)
myAnimation.AddKeyFrame(83.0, Me.Bounds)
myAnimation.AddKeyFrame(84.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(85.0, Me.Bounds)
myAnimation.AddKeyFrame(86.0, Me.Bounds)
myAnimation.AddKeyFrame(87.0, Me.Bounds)
myAnimation.AddKeyFrame(88.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(89.0, Me.Bounds)
myAnimation.AddKeyFrame(90.0, Me.Bounds)
myAnimation.AddKeyFrame(91.0, Me.Bounds)
myAnimation.AddKeyFrame(92.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(93.0, Me.Bounds)
myAnimation.AddKeyFrame(94.0, Me.Bounds)
myAnimation.AddKeyFrame(95.0, Me.Bounds)
myAnimation.AddKeyFrame(96.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(97.0, Me.Bounds)
myAnimation.AddKeyFrame(98.0, Me.Bounds)
myAnimation.AddKeyFrame(99.0, Me.Bounds)
myAnimation.AddKeyFrame(100.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(101.0, Me.Bounds)
myAnimation.AddKeyFrame(102.0, Me.Bounds)
myAnimation.AddKeyFrame(103.0, Me.Bounds)
myAnimation.AddKeyFrame(104.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(105.0, Me.Bounds)
myAnimation.AddKeyFrame(106.0, Me.Bounds)
myAnimation.AddKeyFrame(107.0, Me.Bounds)
myAnimation.AddKeyFrame(108.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(109.0, Me.Bounds)
myAnimation.AddKeyFrame(110.0, Me.Bounds)
myAnimation.AddKeyFrame(111.0, Me.Bounds)
myAnimation.AddKeyFrame(112.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(113.0, Me.Bounds)
myAnimation.AddKeyFrame(114.0, Me.Bounds)
myAnimation.AddKeyFrame(115.0, Me.Bounds)
myAnimation.AddKeyFrame(116.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(117.0, Me.Bounds)
myAnimation.AddKeyFrame(118.0, Me.Bounds)
myAnimation.AddKeyFrame(119.0, Me.Bounds)
myAnimation.AddKeyFrame(120.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(121.0, Me.Bounds)
myAnimation.AddKeyFrame(122.0, Me.Bounds)
myAnimation.AddKeyFrame(123.0, Me.Bounds)
myAnimation.AddKeyFrame(124.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(125.0, Me.Bounds)
myAnimation.AddKeyFrame(126.0, Me.Bounds)
myAnimation.AddKeyFrame(127.0, Me.Bounds)
myAnimation.AddKeyFrame(128.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(129.0, Me.Bounds)
myAnimation.AddKeyFrame(130.0, Me.Bounds)
myAnimation.AddKeyFrame(131.0, Me.Bounds)
myAnimation.AddKeyFrame(132.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(133.0, Me.Bounds)
myAnimation.AddKeyFrame(134.0, Me.Bounds)
myAnimation.AddKeyFrame(135.0, Me.Bounds)
myAnimation.AddKeyFrame(136.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(137.0, Me.Bounds)
myAnimation.AddKeyFrame(138.0, Me.Bounds)
myAnimation.AddKeyFrame(139.0, Me.Bounds)
myAnimation.AddKeyFrame(140.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(141.0, Me.Bounds)
myAnimation.AddKeyFrame(142.0, Me.Bounds)
myAnimation.AddKeyFrame(143.0, Me.Bounds)
myAnimation.AddKeyFrame(144.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(145.0, Me.Bounds)
myAnimation.AddKeyFrame(146.0, Me.Bounds)
myAnimation.AddKeyFrame(147.0, Me.Bounds)
myAnimation.AddKeyFrame(148.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(149.0, Me.Bounds)
myAnimation.AddKeyFrame(150.0, Me.Bounds)
myAnimation.AddKeyFrame(151.0, Me.Bounds)
myAnimation.AddKeyFrame(152.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(153.0, Me.Bounds)
myAnimation.AddKeyFrame(154.0, Me.Bounds)
myAnimation.AddKeyFrame(155.0, Me.Bounds)
myAnimation.AddKeyFrame(156.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(157.0, Me.Bounds)
myAnimation.AddKeyFrame(158.0, Me.Bounds)
myAnimation.AddKeyFrame(159.0, Me.Bounds)
myAnimation.AddKeyFrame(160.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(161.0, Me.Bounds)
myAnimation.AddKeyFrame(162.0, Me.Bounds)
myAnimation.AddKeyFrame(163.0, Me.Bounds)
myAnimation.AddKeyFrame(164.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(165.0, Me.Bounds)
myAnimation.AddKeyFrame(166.0, Me.Bounds)
myAnimation.AddKeyFrame(167.0, Me.Bounds)
myAnimation.AddKeyFrame(168.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(169.0, Me.Bounds)
myAnimation.AddKeyFrame(170.0, Me.Bounds)
myAnimation.AddKeyFrame(171.0, Me.Bounds)
myAnimation.AddKeyFrame(172.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(173.0, Me.Bounds)
myAnimation.AddKeyFrame(174.0, Me.Bounds)
myAnimation.AddKeyFrame(175.0, Me.Bounds)
myAnimation.AddKeyFrame(176.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(177.0, Me.Bounds)
myAnimation.AddKeyFrame(178.0, Me.Bounds)
myAnimation.AddKeyFrame(179.0, Me.Bounds)
myAnimation.AddKeyFrame(180.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(181.0, Me.Bounds)
myAnimation.AddKeyFrame(182.0, Me.Bounds)
myAnimation.AddKeyFrame(183.0, Me.Bounds)
myAnimation.AddKeyFrame(184.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(185.0, Me.Bounds)
myAnimation.AddKeyFrame(186.0, Me.Bounds)
myAnimation.AddKeyFrame(187.0, Me.Bounds)
myAnimation.AddKeyFrame(188.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(189.0, Me.Bounds)
myAnimation.AddKeyFrame(190.0, Me.Bounds)
myAnimation.AddKeyFrame(191.0, Me.Bounds)
myAnimation.AddKeyFrame(192.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(193.0, Me.Bounds)
myAnimation.AddKeyFrame(194.0, Me.Bounds)
myAnimation.AddKeyFrame(195.0, Me.Bounds)
myAnimation.AddKeyFrame(196.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(197.0, Me.Bounds)
myAnimation.AddKeyFrame(198.0, Me.Bounds)
myAnimation.AddKeyFrame(199.0, Me.Bounds)
myAnimation.AddKeyFrame(200.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(201.0, Me.Bounds)
myAnimation.AddKeyFrame(202.0, Me.Bounds)
myAnimation.AddKeyFrame(203.0, Me.Bounds)
myAnimation.AddKeyFrame(204.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(205.0, Me.Bounds)
myAnimation.AddKeyFrame(206.0, Me.Bounds)
myAnimation.AddKeyFrame(207.0, Me.Bounds)
myAnimation.AddKeyFrame(208.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(209.0, Me.Bounds)
myAnimation.AddKeyFrame(210.0, Me.Bounds)
myAnimation.AddKeyFrame(211.0, Me.Bounds)
myAnimation.AddKeyFrame(212.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(213.0, Me.Bounds)
myAnimation.AddKeyFrame(214.0, Me.Bounds)
myAnimation.AddKeyFrame(215.0, Me.Bounds)
myAnimation.AddKeyFrame(216.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(217.0, Me.Bounds)
myAnimation.AddKeyFrame(218.0, Me.Bounds)
myAnimation.AddKeyFrame(219.0, Me.Bounds)
myAnimation.AddKeyFrame(220.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(221.0, Me.Bounds)
myAnimation.AddKeyFrame(222.0, Me.Bounds)
myAnimation.AddKeyFrame(223.0, Me.Bounds)
myAnimation.AddKeyFrame(224.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(225.0, Me.Bounds)
myAnimation.AddKeyFrame(226.0, Me.Bounds)
myAnimation.AddKeyFrame(227.0, Me.Bounds)
myAnimation.AddKeyFrame(228.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(229.0, Me.Bounds)
myAnimation.AddKeyFrame(230.0, Me.Bounds)
myAnimation.AddKeyFrame(231.0, Me.Bounds)
myAnimation.AddKeyFrame(232.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(233.0, Me.Bounds)
myAnimation.AddKeyFrame(234.0, Me.Bounds)
myAnimation.AddKeyFrame(235.0, Me.Bounds)
myAnimation.AddKeyFrame(236.0, Me.Bounds 1.5)
myAnimation.AddKeyFrame(237.0, Me.Bounds)
myAnimation.AddKeyFrame(238.0, Me.Bounds)
myAnimation.AddKeyFrame(239.0, Me.Bounds)
myAnimation.AddKeyFrame(240