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鸿蒙HarmonyOS三方件开发指南-SwipeLayout侧滑删除

亿华云2025-10-03 02:27:46【系统运维】4人已围观

简介想了解更多内容,请访问:和华为官方合作共建的鸿蒙技术社区https://harmonyos.51cto.com1. SwipeLayout组件功能介绍1.1.功能介绍:SwipeLayout组件是一个

想了解更多内容,鸿蒙请访问:

和华为官方合作共建的侧滑鸿蒙技术社区

https://harmonyos.51cto.com

1. SwipeLayout组件功能介绍

1.1.功能介绍:

SwipeLayout组件是一个侧滑删除组件。

1.2. 模拟器上运行效果:

2. SwipeLayout使用方法

2.1. 新建工程,删除增加组件Har包依赖

在应用模块中添加HAR,鸿蒙只需要将SwipeLayout.har复制到entry\libs目录下即可(由于build.gradle中已经依赖的侧滑libs目录下的*.har,因此不需要再做修改)。删除

2.2. 修改主页面的鸿蒙布局文件

修改主页面的布局文件ability_main.xml,将自定义的侧滑SwipeLayout添加到xml中,将初始状态下展示的删除视图添加到SwipeLayout作为index为0的子视图:

<?xml version="1.0" encoding="utf-8"?> <DirectionalLayout     xmlns:ohos="http://schemas.huawei.com/res/ohos"     ohos:id="$+id:total1"     ohos:height="match_parent"     ohos:width="match_parent"     ohos:background_element="gray"     ohos:orientation="vertical">     <com.isoftstone.swipelayout.SwipeLayout         ohos:id="$+id:sample2"         ohos:height="80vp"         ohos:width="match_parent"         ohos:orientation="horizontal">         <Text             ohos:id="$+id:bottom_layout1"             ohos:height="match_parent"             ohos:width="match_parent"             ohos:background_element="white"             ohos:multiple_lines="true"             ohos:padding="10"             ohos:text="要有最樸素的生活和最遙遠的夢想,香港云服务器即使明天天寒地凍,鸿蒙山高水遠,侧滑路遠馬亡。删除"             ohos:text_alignment="left"             ohos:text_size="14fp"             ohos:visibility="visible">         </Text>         <DirectionalLayout             ohos:id="$+id:bottom_wrapper1"             ohos:height="match_parent"             ohos:width="360px"             ohos:background_element="#ddff00"             ohos:orientation="horizontal"             ohos:visibility="visible">             <Text                 ohos:id="$+id:Texts1"                 ohos:height="match_parent"                 ohos:width="180px"                 ohos:background_element="#7B1FA2"                 ohos:left_padding="25"                 ohos:right_padding="25"                 ohos:text="收藏"                 ohos:text_alignment="center"                 ohos:text_color="#DC143C"                 ohos:text_size="14fp"                 ohos:visibility="visible"                 />             <Text                 ohos:id="$+id:texts2"                 ohos:height="match_parent"                 ohos:width="180px"                 ohos:background_element="#C7C7CC"                 ohos:left_padding="25"                 ohos:right_padding="25"                 ohos:text="删除"                 ohos:text_alignment="center"                 ohos:text_color="#DC143C"                 ohos:text_size="14fp"                 ohos:visibility="visible"                 />         </DirectionalLayout>         <Image             ohos:id="$+id:images3"             ohos:height="match_parent"             ohos:width="match_parent"             ohos:background_element="gray"             ohos:image_src="$media:star"             />         <DirectionalLayout             ohos:id="$+id:bottom_fronts"             ohos:height="match_parent"             ohos:width="match_content"             ohos:background_element="#ddff00"             ohos:orientation="horizontal"             ohos:visibility="visible">             <Image                 ohos:id="$+id:images1"                 ohos:height="match_parent"                 ohos:width="180px"                 ohos:background_element="green"                 ohos:image_src="$media:star"/>             <Image                 ohos:id="$+id:images2"                 ohos:height="match_parent"                 ohos:width="180px"                 ohos:background_element="red"                 ohos:image_src="$media:trash"/>         </DirectionalLayout>     </com.isoftstone.swipelayout.SwipeLayout>     <Image         ohos:id="$+id:images"         ohos:height="match_content"         ohos:width="match_content"         ohos:background_element="green"         ohos:image_src="$media:star"         ohos:layout_alignment="horizontal_center"         ohos:top_margin="100vp"/> </DirectionalLayout> 

2.3. 初始化SwipeLayout

在MainAbilitySlince类的鸿蒙onStart函数中,增加如下代码。侧滑

SwipeLayout swipeLayout = (SwipeLayout) findComponentById(ResourceTable.Id_sample1); DirectionalLayout right = (DirectionalLayout) findComponentById(ResourceTable.Id_bottom_wrapper); //初始化 swipeLayout.initializeSwipe(); DirectionalLayout left = (DirectionalLayout) findComponentById(ResourceTable.Id_bottom_front); Image image3 = (Image) findComponentById(ResourceTable.Id_image3); //将各个方向拖拽时对应展示的删除视图添加到swipeLayout swipeLayout.addDrag(SwipeLayout.DragEdge.Left, right); swipeLayout.addDrag(SwipeLayout.DragEdge.Right, left); swipeLayout.addDrag(SwipeLayout.DragEdge.Bottom, image3); 

3. SwipeLayout开发实现

3.1. 新建一个Module

新建一个Module,类型选择HarmonyOS Library,模块名为SwipeLayout,如图

3.2. 新建一个SwipeLayout类

新建一个SwipeLayout类,继承自PositionLayout类

SwipeLayout的主要流程:

1. 首先通过xml的构造方法,为SwipeLayout添加拖拽监听;

2. 将LinkedHashMap

3. 通过public void addDrag(DragEdge dragEdge, Component child) 方法将可拖拽的方向和对应展示的视图添加到mDragEdges,并设置其初始的ContentPosition;

public void addDrag(DragEdge dragEdge, Component child) {      mDragEdges.put(dragEdge, child);     switch (dragEdge) {          case Left:             child.setContentPosition(getWidth(), 0);             break;         case Right:             HiLog.info(label, "Log_addDrag" + child.getHeight());             child.setContentPosition(-child.getWidth(), 0);             break;         case Top:             child.setContentPosition(0, getHeight());             break;         case Bottom:             child.setContentPosition(0, -child.getHeight());             break;     }     child.setVisibility(INVISIBLE);     addComponent(child, 0); } 

4.在拖拽动作的服务器托管监听回调方法中完成对视图的更新

A.在update回调中设置打开和关闭的边界以及边界内的位置刷新

if (getSurfaceView().getContentPositionY() + dragInfo.yOffset <= 0) {      close(); } else if (getSurfaceView().getContentPositionY() + dragInfo.yOffset >= getHeight()) {      open(); } else {      getSurfaceView().setContentPositionY(getSurfaceView().getContentPositionY() + (float) dragInfo.yOffset);     getCurrentBottomView().setContentPositionY(getCurrentBottomView().getContentPositionY() + (float) dragInfo.yOffset); } 

B.在end中判断滑动的距离,如果大于设定的滑动距离则直接将控件展开或者关闭

if (isCloseBeforeDrag && mDragDistanceY < 0) {      if (Math.abs(mDragDistanceY) >= mWillOpenPercentAfterClose * getBottomViewHeight()) {          open();     } else {          close();     } } if (!isCloseBeforeDrag && mDragDistanceY > 0) {      if (Math.abs(mDragDistanceY) >= mWillOpenPercentAfterClose * getBottomViewHeight()) {          close();     } else {          open();     } } 

3.3. 编译HAR包

利用Gradle可以将HarmonyOS Library库模块构建为HAR包,构建HAR包的方法如下:

在Gradle构建任务中,双击PackageDebugHar或PackageReleaseHar任务,构建Debug类型或Release类型的HAR。

待构建任务完成后,可以loadingview> bulid > outputs > har目录中,获取生成的HAR包。

项目源代码地址:https://github.com/isoftstone-dev/SwipeBackLayout

欢迎交流:HWIS-HOS@isoftstone.com

想了解更多内容,请访问:

和华为官方合作共建的鸿蒙技术社区

https://harmonyos.51cto.com

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