HarmonyOS ArkUI Badge 徽标与 Chip 标签：消息红点、数字徽标与可选中标签

系列鸿蒙 HarmonyOS 6.1 新特性实战 · 第 39 篇Badge徽标用于在图标或按钮上附加消息计数、红点提醒或文字标记Chip标签则用于展示可操作的关键词标签。本篇演示 Badge 的数字、文字、位置三个维度以及用自定义 Row 实现可关闭、可选中的 Chip 标签组。运行效果初始状态Badge 数字徽标和 Chip 标签列表点击 1 消息后徽标数字递增一、Badge 数字徽标State msgCount: number 5 Badge({ count: this.msgCount, // 数字徽标 maxCount: 99, // 超过显示 99 position: BadgePosition.RightTop, style: { badgeSize: 18, badgeColor: #e74c3c, fontSize: 11 } }) { Text(✉).fontSize(36) // 被包裹的内容 }点击按钮更新数字Button(1 消息) .onClick(() { this.msgCount Math.min(this.msgCount 1, 999) }) Button(清空) .onClick(() { this.msgCount 0 })当count为 0 时Badge 自动隐藏不需要条件渲染。二、文字徽标value 属性// 文字标签NEW、HOT 等 Badge({ value: NEW, position: BadgePosition.RightTop, style: { badgeSize: 16, badgeColor: #ff6600, fontSize: 10 } }) { Text(新功能).padding(8).backgroundColor(#f5f5f5).borderRadius(4) } // 红点只显示一个圆点 Badge({ value: this.redDot ? ● : , position: BadgePosition.RightTop, style: { badgeSize: 12, badgeColor: #e74c3c, fontSize: 8 } }) { Text().fontSize(36) }三、BadgePosition 位置// RightTop右上角最常用消息通知 Badge({ count: 1, position: BadgePosition.RightTop, style: {...} }) { ... } // Right右侧居中 Badge({ count: 1, position: BadgePosition.Right, style: {...} }) { ... } // Left左侧居中 Badge({ count: 1, position: BadgePosition.Left, style: {...} }) { ... }四、自定义 Chip 标签ArkUI 6.1 中Chip组件在某些 SDK 版本不可用可用Row Text自行实现State chips: string[] [ArkTS, HarmonyOS, ArkUI, NEXT, 鸿蒙] State chipActive: boolean[] [true, false, true, false, false] // 可关闭标签 Row({ space: 4 }) { Text(chip).fontSize(13).fontColor(#0066ff) Text(×).fontSize(14).fontColor(#0066ff).fontWeight(FontWeight.Bold) .onClick(() { const arr this.chips.filter((_: string, i: number) i ! idx) const aArr this.chipActive.filter((_: boolean, i: number) i ! idx) this.chips arr this.chipActive aArr }) } .padding({ left: 10, right: 8, top: 5, bottom: 5 }) .backgroundColor(#e8f0ff).borderRadius(16).border({ width: 1, color: #b3d1ff })ArkTS 的 ForEach 注意事项不能在 ForEach 的 UI builder 回调内声明const变量因为Row没有flexWrap多个 Chip 需要按行拆分到不同 Row 容器// 分两行渲染避免 Row 没有 flexWrap 的限制 Column({ space: 8 }) { Row({ space: 8 }) { ForEach(this.chips.slice(0, 3), (chip: string, idx: number) { Row({ space: 4 }) { Text(chip).fontSize(13).fontColor(#0066ff) Text(×).fontSize(14).fontColor(#0066ff) .onClick(() { const arr this.chips.filter((_: string, i: number) i ! idx) this.chips arr }) } .padding({ left: 10, right: 8, top: 5, bottom: 5 }) .backgroundColor(#e8f0ff).borderRadius(16) }) } Row({ space: 8 }) { ForEach(this.chips.slice(3), (chip: string, relIdx: number) { Row({ space: 4 }) { Text(chip).fontSize(13).fontColor(#0066ff) Text(×).fontSize(14).fontColor(#0066ff) .onClick(() { // 用 relIdx 3 代替 const idx relIdx 3ArkTS 限制 const arr this.chips.filter((_: string, i: number) i ! relIdx 3) this.chips arr }) } .padding({ left: 10, right: 8, top: 5, bottom: 5 }) .backgroundColor(#e8f0ff).borderRadius(16) }) } }可选中标签ForEach(this.chips, (chip: string, idx: number) { Text(chip) .fontSize(13) .fontColor(this.chipActive[idx] ? #fff : #0066ff) .padding({ left: 12, right: 12, top: 6, bottom: 6 }) .backgroundColor(this.chipActive[idx] ? #0066ff : #e8f0ff) .borderRadius(16).border({ width: 1, color: #0066ff }) .onClick(() { const arr this.chipActive.slice() arr[idx] !arr[idx] this.chipActive arr }) })完整代码Entry Component struct Index { State msgCount: number 5 State redDot: boolean true State chips: string[] [ArkTS, HarmonyOS, ArkUI, NEXT, 鸿蒙] State chipActive: boolean[] [true, false, true, false, false] build() { Scroll() { Column({ space: 20 }) { Text(Badge 徽标与 Chip 标签组件) .fontSize(22).fontWeight(FontWeight.Bold).fontColor(#1a1a1a) // Badge 数字徽标 Column({ space: 16 }) { Text(一、Badge 数字徽标).fontSize(15).fontWeight(FontWeight.Bold).fontColor(#333) Row({ space: 32 }) { Column({ space: 6 }) { Badge({ count: this.msgCount, maxCount: 99, position: BadgePosition.RightTop, style: { badgeSize: 18, badgeColor: #e74c3c, fontSize: 11 } }) { Text(✉).fontSize(36) } Text(消息).fontSize(12).fontColor(#666) } Column({ space: 6 }) { Badge({ count: 3, maxCount: 99, position: BadgePosition.RightTop, style: { badgeSize: 16, badgeColor: #e74c3c } }) { Text().fontSize(36) } Text(购物车).fontSize(12).fontColor(#666) } Column({ space: 6 }) { Badge({ value: this.redDot ? ● : , position: BadgePosition.RightTop, style: { badgeSize: 12, badgeColor: #e74c3c, fontSize: 8 } }) { Text().fontSize(36) } Text(通知).fontSize(12).fontColor(#666) } } .width(100%).justifyContent(FlexAlign.SpaceEvenly).alignItems(VerticalAlign.Bottom) Row({ space: 8 }) { Button(1 消息).fontSize(12).height(36).backgroundColor(#e8f0ff).fontColor(#0066ff) .onClick(() { this.msgCount Math.min(this.msgCount 1, 999) }) Button(清空).fontSize(12).height(36).backgroundColor(#fff0f0).fontColor(#e74c3c) .onClick(() { this.msgCount 0 }) Button(this.redDot ? 关红点 : 开红点).fontSize(12).height(36) .backgroundColor(#e8f0ff).fontColor(#0066ff) .onClick(() { this.redDot !this.redDot }) } } .padding(12).backgroundColor(#fff).borderRadius(8).width(100%) .border({ width: 1, color: #e0e0e0 }).alignItems(HorizontalAlign.Start) // Chip 标签 Column({ space: 12 }) { Text(二、Chip 标签可关闭 / 可选中).fontSize(15).fontWeight(FontWeight.Bold).fontColor(#333) Text(关闭标签点 × 删除).fontSize(13).fontColor(#555) Column({ space: 8 }) { Row({ space: 8 }) { ForEach(this.chips.slice(0, 3), (chip: string, idx: number) { Row({ space: 4 }) { Text(chip).fontSize(13).fontColor(#0066ff) Text(×).fontSize(14).fontColor(#0066ff).fontWeight(FontWeight.Bold) .onClick(() { this.chips this.chips.filter((_: string, i: number) i ! idx) this.chipActive this.chipActive.filter((_: boolean, i: number) i ! idx) }) } .padding({ left: 10, right: 8, top: 5, bottom: 5 }) .backgroundColor(#e8f0ff).borderRadius(16).border({ width: 1, color: #b3d1ff }) }) } Row({ space: 8 }) { ForEach(this.chips.slice(3), (chip: string, relIdx: number) { Row({ space: 4 }) { Text(chip).fontSize(13).fontColor(#0066ff) Text(×).fontSize(14).fontColor(#0066ff).fontWeight(FontWeight.Bold) .onClick(() { this.chips this.chips.filter((_: string, i: number) i ! relIdx 3) this.chipActive this.chipActive.filter((_: boolean, i: number) i ! relIdx 3) }) } .padding({ left: 10, right: 8, top: 5, bottom: 5 }) .backgroundColor(#e8f0ff).borderRadius(16).border({ width: 1, color: #b3d1ff }) }) } } if (this.chips.length 0) { Button(重置标签).fontSize(13).height(38).backgroundColor(#0066ff).fontColor(#fff) .onClick(() { this.chips [ArkTS, HarmonyOS, ArkUI, NEXT, 鸿蒙] this.chipActive [true, false, true, false, false] }) } Text(筛选标签点击切换).fontSize(13).fontColor(#555) Row({ space: 8 }) { ForEach(this.chips, (chip: string, idx: number) { Text(chip).fontSize(13) .fontColor(this.chipActive[idx] ? #fff : #0066ff) .padding({ left: 12, right: 12, top: 6, bottom: 6 }) .backgroundColor(this.chipActive[idx] ? #0066ff : #e8f0ff) .borderRadius(16).border({ width: 1, color: #0066ff }) .onClick(() { const arr this.chipActive.slice() arr[idx] !arr[idx] this.chipActive arr }) }) } } .padding(12).backgroundColor(#fff).borderRadius(8).width(100%) .border({ width: 1, color: #e0e0e0 }).alignItems(HorizontalAlign.Start) } .padding(20).width(100%) } .width(100%).height(100%).backgroundColor(#f5f5f5) } }API 速查组件/属性说明Badge({ count, maxCount, position, style })数字徽标count0 自动隐藏Badge({ value, position, style })文字徽标‘NEW’、‘HOT’ 等BadgePosition.RightTop / Right / Left徽标位置style.badgeSize徽标圆圈大小style.badgeColor徽标背景色小结Badge count0 自动隐藏不需要用if条件判断是否显示 BadgeArkUI 没有内置 Chip 组件6.1 部分版本用Row Text Text(×)可以完美模拟Row 没有 flexWrap多行标签需要手动拆 Row或改用 Flex 组件ForEach UI 回调内不能声明 const需要在回调内计算的索引用表达式relIdx 3内联上一篇Select 与 TextPicker 选择器 | 下一篇RichEditor 富文本编辑器内联样式与 Span 管理