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HarmonyOS学习路之开发篇—Java UI框架(使用工具自动生成JS FA调用PA代码)

JS FA（Feature Ability）调用PA （Particle Ability）是使用基于JS扩展的类Web开发范式的方舟开发框架所提供的一种跨语言能力调用的机制，用于建立JS能力与Java能力之间传递方法调用、处理数据返回以及订阅事件上报的通道。开发者可以使用FA调用PA机制进行应用开发...

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HarmonyOS学习路之开发篇—Java UI框架(JS FA调用Java PA)

JS FA调用Java PA机制使用兼容JS的类Web开发范式的方舟开发框架提供了JS FA（Feature Ability）调用Java PA（Particle Ability）的机制，该机制提供了一种通道来传递方法调用、处理数据返回以及订阅事件上。当前提供Ability和Internal Abi...

HarmonyOS学习路之开发篇—Java UI框架(动画开发)

动画开发动画是组件的基础特性之一，精心设计的动画使UI变化更直观，有助于改进应用程序的外观并改善用户体验。Java UI框架提供了帧动画、数值动画和属性动画，并提供了将多个动画同时操作的动画集合。帧动画帧动画是利用视觉暂留现象，将一系列静止的图片按序播放，给用户产生动画的效果。1. 在Project...

HarmonyOS学习路之开发篇—Java UI框架(自定义组件与布局二)

自定义布局当Java UI框架提供的布局无法满足需求时，可以创建自定义布局，根据需求自定义布局规则常用接口Component类相关接口ComponentContainer类相关接口接口名称作用setArrangeListener设置容器组件布局子组件的侦听器onArrange通知容器组件在布局时设置...

HarmonyOS学习路之开发篇—Java UI框架(自定义组件与布局一)

HarmonyOS提供了一套复杂且强大的Java UI框架，其中Component提供内容显示，是界面中所有组件的基类。ComponentContainer作为容器容纳Component或ComponentContainer对象，并对它们进行布局。Java UI框架也提供了一部分Component和...

HarmonyOS学习路之开发篇—Java UI框架(PositionLayout&&AdaptiveBoxLayout)

PositionLayout在PositionLayout中，子组件通过指定准确的x/y坐标值在屏幕上显示。(0, 0)为左上角；当向下或向右移动时，坐标值变大；允许组件之间互相重叠。PositionLayout示意图布局方式PositionLayout以坐标的形式控制组件的显示位置，允许组件相互重...

HarmonyOS学习路之开发篇—Java UI框架(TableLayout)

TableLayoutTableLayout使用表格的方式划分子组件。支持的XML属性TableLayout的共有XML属性继承自：ComponentTableLayout的自有XML属性见下表：TableLayout的创建在XML中创建TableLayout，示例代码如下：<?xml ver...

HarmonyOS学习路之开发篇—Java UI框架(StackLayout)

StackLayoutStackLayout直接在屏幕上开辟出一块空白的区域，添加到这个布局中的视图都是以层叠的方式显示，而它会把这些视图默认放到这块区域的左上角，第一个添加到布局中的视图显示在最底层，最后一个被放在最顶层。上一层的视图会覆盖下一层的视图。支持的XML属性StackLayout无自有...

HarmonyOS学习路之开发篇—Java UI框架(DependentLayout)

DependentLayoutDependentLayout是Java UI框架里的一种常见布局。与DirectionalLayout相比，拥有更多的排布方式，每个组件可以指定相对于其他同级元素的位置，或者指定相对于父组件的位置。支持的XML属性DependentLayout的共有XML属性继承自：...

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