harmony 鸿蒙TabContent

  • 2022-08-09
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TabContent

The <TabContent> component is used only in the <Tabs> component. It corresponds to the content view of a switched tab page.

NOTE

This component is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

This component supports only one child component.

NOTE

Built-in components and custom components are allowed, with support for (if/else, ForEach, and LazyForEach) rendering control.

APIs

TabContent()

Attributes

In addition to the universal attributes, the following attributes are supported.

Name Type Description
tabBar string |Resource |{
icon?: string |Resource,
text?: string |Resource
}
|CustomBuilder8+
Content displayed on the tab bar.
CustomBuilder: builder, to which components can be passed (applicable to API version 8 and later versions).
NOTE
When using an SVG image for the icon, delete the width and height attributes of the image. Otherwise, the icon size will be determined by the width and height attributes of the SVG image.
If the content set exceeds the space provided by the tab bar, it will be clipped.
tabBar9+ SubTabBarStyle |BottomTabBarStyle Content displayed on the tab bar.
SubTabBarStyle: subtab style. It takes text as its input parameter.
BottomTabBarStyle: bottom and side tab style. It takes text and images as its input parameters.
NOTE
The bottom tab style does not include an indicator.
When an icon display error occurs, a gray blank block is displayed.

NOTE

  • The <TabContent> component does not support setting of the common width attribute. By default, its width is the same as that of the parent <Tabs> component.
  • The <TabContent> component does not support setting of the universal height attribute. Its height is determined by the height of the parent <Tabs> component and the <TabBar> component.
  • If the vertical attribute is false, the width and height descriptions are swapped in the preceding two restrictions.
  • <TabContent> does not support page scrolling. If page scrolling is required, consider nesting a list.

SubTabBarStyle9+

Implements the subtab style.

constructor

constructor(content: string|Resource)

Constructor used to create a SubTabBarStyle instance.

Parameters

Name Type Mandatory Description
content string |Resource Yes Text for the tab. Since API version 10, the type of content is ResourceStr.

of10+

static of(content: ResourceStr)

Static constructor used to create a SubTabBarStyle instance.

Parameters

Name Type Mandatory Description
content ResourceStr Yes Text for the tab.

Attributes

The following attributes are supported.

Name Type Description
indicator10+ IndicatorStyle Indicator style of the selected subtab. It is valid only in the horizontal layout.
selectedMode10+ SelectedMode Display mode of the selected subtab.
Default value: SelectedMode.INDICATOR
board10+ BoardStyle Board style of the selected subtab. This attribute applies only
labelStyle10+ LabelStyle Label text and font of the subtab.
padding10+ Padding |Dimension Padding of the subtab. It cannot be set in percentage. When the parameter is of the Dimension type, the value applies to all sides.
Default value: {left:8.0vp,right:8.0vp,top:17.0vp,bottom:18.0vp}

IndicatorStyle10+

Name Type Mandatory Description
color ResourceColor No Color of the indicator and board.
Default value: #FF007DFF
height Length No Height of the indicator. It cannot be set in percentage.
Default value: 2.0
Unit: vp
width Length No Width of the indicator. It cannot be set in percentage.
Default value: 0.0
Unit: vp
NOTE
If this parameter is set to 0, the tab text width will be used instead.
borderRadius Length No Rounded corner radius of the indicator. It cannot be set in percentage.
Default value: 0.0
Unit: vp
marginTop Length No Spacing between the indicator and text. It cannot be set in percentage.
Default value: 8.0
Unit: vp

SelectedMode10+

Name Description
INDICATOR Indicator mode.
BOARD Board mode.

BoardStyle10+

Name Type Mandatory Description
borderRadius Length No Rounded corner radius of the board. It cannot be set in percentage.
Default value: 8.0
Unit: vp

LabelStyle10+

Name Type Mandatory Description
overflow TextOverflow No Display mode when the label text is too long. By default, an ellipsis (…) is used to represent text overflow.
maxLines number No Maximum number of lines in the label text. If this attribute is specified, the text will not exceed the specified number of lines. You can use textOverflow to specify how to represent text overflow. Default value: 1
minFontSize number |ResourceStr No Minimum font size of the label text. It cannot be set in percentage. For the setting to take effect, this attribute must be used together with maxFontSize, maxLines, or layout constraint settings. When the adaptive text size is set, font.size does not take effect. Default value: 0.0fp
maxFontSize number |ResourceStr No Maximum font size of the label text. It cannot be set in percentage. For the setting to take effect, this attribute must be used together with minFontSize, maxLines, or layout constraint settings. When the adaptive text size is set, font.size does not take effect. Default value: 0.0fp
heightAdaptivePolicy TextHeightAdaptivePolicy No How the adaptive height is determined for the label text. By default, the maxLines settings are prioritized.
font Font No Font of the label text.
When the tab is a subtab, the default font is in 16.0 fp size, ‘HarmonyOS Sans’ family, and normal font style and weight.
When the tab is a bottom tab, the default font is in 10.0 fp size, ‘HarmonyOS Sans’ family, normal font style, and medium weight.

BottomTabBarStyle9+

Implements the bottom and side tab style.

constructor

constructor(icon: string|Resource, content: string|Resource)

A constructor used to create a BottomTabBarStyle instance.

Parameters

Name Type Mandatory Description
icon string |Resource Yes Image for the tab. Since API version 10, the type of icon is ResourceStr.
text string |Resource Yes Text for the tab. Since API version 10, the type of text is ResourceStr.

of10+

static of(icon: ResourceStr, text: ResourceStr) Static constructor used to create a BottomTabBarStyle instance.

Parameters

Name Type Mandatory Description
icon ResourceStr Yes Image for the tab.
text ResourceStr Yes Text for the tab.

Attributes

The following attributes are supported.

Name Type Description
padding10+ Padding |Dimension Padding of the bottom tab. It cannot be set in percentage. When the parameter is of the Dimension type, the value applies to all sides.
Default value: {left:4.0vp,right:4.0vp,top:0.0vp,bottom:0.0vp}
verticalAlign10+ VerticalAlign Vertical alignment mode of the images and text on the bottom tab.
Default value: VerticalAlign.Center
layoutMode10+ LayoutMode Layout of the images and text on the bottom tab. For details, see LayoutMode.
Default value: LayoutMode.VERTICAL
symmetricExtensible10+ boolean Whether the images and text on the bottom tab can be symmetrically extended by the minimum value of the available space on the left and right bottom tabs. This parameter is valid only between bottom tabs in fixed horizontal mode.
Default value: false
labelStyle10+ LabelStyle Label text and font of the subtab.

LayoutMode10+

Name Description
AUTO When the tab width is greater than 104 vp, the tab content is arranged from left to right. Otherwise,the tab content is arranged from top to bottom. This parameter is valid only when the tab bar is in vertical mode or fixed horizontal mode.
VERTICAL The tab content is arranged from top to bottom.
HORIZONAL The tab content is arranged from left to right.

Example

Example 1

// xxx.ets
@Entry
@Component
struct TabContentExample {
  @State fontColor: string = '#182431'
  @State selectedFontColor: string = '#007DFF'
  @State currentIndex: number = 0
  private controller: TabsController = new TabsController()

  @Builder TabBuilder(index: number) {
    Column() {
      Image(this.currentIndex === index ? '/common/public_icon_on.svg' : '/common/public_icon_off.svg')
        .width(24)
        .height(24)
        .margin({ bottom: 4 })
        .objectFit(ImageFit.Contain)
      Text(`Tab${index + 1}`)
        .fontColor(this.currentIndex === index ? this.selectedFontColor : this.fontColor)
        .fontSize(10)
        .fontWeight(500)
        .lineHeight(14)
    }.width('100%')
  }

  build() {
    Column() {
      Tabs({ barPosition: BarPosition.End, controller: this.controller }) {
        TabContent() {
          Column() {
            Text('Tab1')
              .fontSize(36)
              .fontColor('#182431')
              .fontWeight(500)
              .opacity(0.4)
              .margin({ top: 30, bottom: 56.5 })
            Divider()
              .strokeWidth(0.5)
              .color('#182431')
              .opacity(0.05)
          }.width('100%')
        }.tabBar(this.TabBuilder(0))

        TabContent() {
          Column() {
            Text('Tab2')
              .fontSize(36)
              .fontColor('#182431')
              .fontWeight(500)
              .opacity(0.4)
              .margin({ top: 30, bottom: 56.5 })
            Divider()
              .strokeWidth(0.5)
              .color('#182431')
              .opacity(0.05)
          }.width('100%')
        }.tabBar(this.TabBuilder(1))

        TabContent() {
          Column() {
            Text('Tab3')
              .fontSize(36)
              .fontColor('#182431')
              .fontWeight(500)
              .opacity(0.4)
              .margin({ top: 30, bottom: 56.5 })
            Divider()
              .strokeWidth(0.5)
              .color('#182431')
              .opacity(0.05)
          }.width('100%')
        }.tabBar(this.TabBuilder(2))

        TabContent() {
          Column() {
            Text('Tab4')
              .fontSize(36)
              .fontColor('#182431')
              .fontWeight(500)
              .opacity(0.4)
              .margin({ top: 30, bottom: 56.5 })
            Divider()
              .strokeWidth(0.5)
              .color('#182431')
              .opacity(0.05)
          }.width('100%')
        }.tabBar(this.TabBuilder(3))
      }
      .vertical(false)
      .barHeight(56)
      .onChange((index: number) => {
        this.currentIndex = index
      })
      .width(360)
      .height(190)
      .backgroundColor('#F1F3F5')
      .margin({ top: 38 })
    }.width('100%')
  }
}

tabContent

Example 2

// xxx.ets
@Entry
@Component
struct TabContentExample {
  @State fontColor: string = '#182431'
  @State selectedFontColor: string = '#007DFF'
  @State currentIndex: number = 0
  private controller: TabsController = new TabsController()

  @Builder TabBuilder(index: number) {
    Column() {
      Image(this.currentIndex === index ? '/common/public_icon_on.svg' : '/common/public_icon_off.svg')
        .width(24)
        .height(24)
        .margin({ bottom: 4 })
        .objectFit(ImageFit.Contain)
      Text('Tab')
        .fontColor(this.currentIndex === index ? this.selectedFontColor : this.fontColor)
        .fontSize(10)
        .fontWeight(500)
        .lineHeight(14)
    }.width('100%').height('100%').justifyContent(FlexAlign.Center)
  }

  build() {
    Column() {
      Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {
        TabContent()
          .tabBar(this.TabBuilder(0))
        TabContent()
          .tabBar(this.TabBuilder(1))
        TabContent()
          .tabBar(this.TabBuilder(2))
        TabContent()
          .tabBar(this.TabBuilder(3))
      }
      .vertical(true)
      .barWidth(96)
      .barHeight(414)
      .onChange((index: number) => {
        this.currentIndex = index
      })
      .width(96)
      .height(414)
      .backgroundColor('#F1F3F5')
      .margin({ top: 52 })
    }.width('100%')
  }
}

tabContent

Example 3

// xxx.ets
@Entry
@Component
struct TabBarStyleExample {
  build() {
    Column({ space: 5 }) {
      Text ("Subtab Style")
      Column() {
        Tabs({ barPosition: BarPosition.Start }) {
          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Pink)
          }.tabBar(new SubTabBarStyle('Pink'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Yellow)
          }.tabBar(new SubTabBarStyle('Yellow'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Blue)
          }.tabBar(new SubTabBarStyle('Blue'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Green)
          }.tabBar(new SubTabBarStyle('Green'))
        }
        .vertical(false)
        .scrollable(true)
        .barMode(BarMode.Fixed)
        .onChange((index: number) => {
          console.info(index.toString())
        })
        .width('100%')
        .backgroundColor(0xF1F3F5)
      }.width('100%').height(200)
      Text ("Bottom Tab Style")
      Column() {
        Tabs({ barPosition: BarPosition.End }) {
          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Pink)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'pink'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Yellow)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Yellow'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Blue)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Blue'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Green)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Green'))
        }
        .vertical(false)
        .scrollable(true)
        .barMode(BarMode.Fixed)
        .onChange((index: number) => {
          console.info(index.toString())
        })
        .width('100%')
        .backgroundColor(0xF1F3F5)
      }.width('100%').height(200)
      Text ("Side Tab Style")
      Column() {
        Tabs({ barPosition: BarPosition.Start }) {
          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Pink)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'pink'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Yellow)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Yellow'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Blue)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Blue'))

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Green)
          }.tabBar(new BottomTabBarStyle($r('sys.media.ohos_app_icon'), 'Green'))
        }
        .vertical(true).scrollable(true).barMode(BarMode.Fixed)
        .onChange((index: number) => {
          console.info(index.toString())
        })
        .width('100%')
        .backgroundColor(0xF1F3F5)
      }.width('100%').height(400)
    }
  }
}

tabbarStyle

Example 4

// xxx.ets
@Entry
@Component
struct TabsAttr {
  private controller: TabsController = new TabsController()
  @State indicatorColor: Color = Color.Blue;
  @State indicatorWidth: number = 40;
  @State indicatorHeight: number = 10;
  @State indicatorBorderRadius: number = 5;
  @State indicatorSpace: number = 10;
  @State subTabBorderRadius: number = 20;
  @State selectedMode: SelectedMode = SelectedMode.INDICATOR;
  private colorFlag: boolean = true;
  private widthFlag: boolean = true;
  private heightFlag: boolean = true;
  private borderFlag: boolean = true;
  private spaceFlag: boolean = true;

  build() {
    Column() {
      Button ("Change Indicator Color").width ('100%').margin ({ bottom:'12vp' })
        .onClick((event?: ClickEvent) => {
          // Animation configuration for the width and height attributes of the <Button> component
          if (this.colorFlag) {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorColor = Color.Red
            })
          } else {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorColor = Color.Yellow
            })
          }
          this.colorFlag = !this.colorFlag
        })
      Button("Change Indicator Height").width('100%').margin({ bottom: '12vp' })
        .onClick((event?: ClickEvent) => {
          // Animation configuration for the width and height attributes of the <Button> component
          if (this.heightFlag) {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorHeight = 20
            })
          } else {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorHeight = 10
            })
          }
          this.heightFlag = !this.heightFlag
        })
      Button("Change Indicator Width").width('100%').margin({ bottom: '12vp' })
        .onClick((event?: ClickEvent) => {
          // Animation configuration for the width and height attributes of the <Button> component
          if (this.widthFlag) {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorWidth = 30
            })
          } else {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorWidth = 50
            })
          }
          this.widthFlag = !this.widthFlag
        })
      Button ("Change Indicator Corner Radius").width ('100%').margin ({ bottom:'12vp' })
        .onClick((event?: ClickEvent) => {
          // Animation configuration for the width and height attributes of the <Button> component
          if (this.borderFlag) {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorBorderRadius = 0
            })
          } else {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorBorderRadius = 5
            })
          }
          this.borderFlag = !this.borderFlag
        })
      Button ("Change Indicator Spacing").width ('100%').margin ({ bottom:'12vp' })
        .onClick((event?: ClickEvent) => {
          // Animation configuration for the width and height attributes of the <Button> component
          if (this.spaceFlag) {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorSpace = 20
            })
          } else {
            animateTo({
              duration: 1000, // Animation duration.
              curve: Curve.Linear, // Animation curve.
              delay: 200, // Animation delay.
              iterations: 1, // Number of playback times.
              playMode: PlayMode.Normal, // Animation playback mode.
              onFinish: () => {
                console.info('play end')
              }
            }, () => {
              this.indicatorSpace = 10
            })
          }
          this.spaceFlag = !this.spaceFlag
        })
      Tabs({ barPosition: BarPosition.End, controller: this.controller }) {
        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Pink).borderRadius('12vp')
        }.tabBar(SubTabBarStyle.of('pink')
          .indicator({
            color: this.indicatorColor, // Indicator color.
            height: this.indicatorHeight, // Indicator height.
            width: this.indicatorWidth, // Indicator width.
            borderRadius: this.indicatorBorderRadius, // Rounded corner radius of the indicator.
            marginTop: this.indicatorSpace // Spacing between the indicator and text.
          })
          .selectedMode(this.selectedMode)
          .board({ borderRadius: this.subTabBorderRadius })
          .labelStyle({})
        )

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Yellow).borderRadius('12vp')
        }.tabBar('yellow')

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Blue).borderRadius('12vp')
        }.tabBar('blue')

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Green).borderRadius('12vp')
        }.tabBar('green')

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Gray).borderRadius('12vp')
        }.tabBar('gray')

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Orange).borderRadius('12vp')
        }.tabBar('orange')
      }
      .vertical(false)
      .scrollable(true)
      .barMode(BarMode.Scrollable)
      .barHeight(140)
      .animationDuration(400)
      .onChange((index: number) => {
        console.info(index.toString())
      })
      .backgroundColor(0xF5F5F5)
      .height(320)
    }.width('100%').height(250).padding({ top: '24vp', left: '24vp', right: '24vp' })
  }
}

tabContent3

Example 5

// xxx.ets
@Entry
@Component
struct TabsTextOverflow {
  @State message: string = 'Hello World'
  private controller: TabsController = new TabsController()
  @State subTabOverflowOpaque: boolean = true;
  build() {
    Column() {
      Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {
        TabContent() {
          Column(){
            Text('Use an ellipsis').fontSize(30).fontColor(0xFF000000)
          }.width('100%').height('100%').backgroundColor(Color.Pink)
        }.tabBar (SubTabBarStyle.of ('Start [Use an ellipsis] End')
          .labelStyle({ overflow: TextOverflow.Ellipsis, maxLines: 1, minFontSize: 10, heightAdaptivePolicy: TextHeightAdaptivePolicy.MAX_LINES_FIRST,
            font: { size: 20 } }))
        TabContent() {
          Column()
          {
            Text('Scale down and then clip').fontSize(30).fontColor(0xFF000000)
          }.width('100%').height('100%').backgroundColor(Color.Pink)
        }.tabBar (SubTabBarStyle.of ('Start [Scale down and then clip; Scale down and then clip] End')
          .labelStyle({ overflow: TextOverflow.Clip, maxLines: 1, minFontSize: 15, maxFontSize: 15, heightAdaptivePolicy: TextHeightAdaptivePolicy.MIN_FONT_SIZE_FIRST,
            font: { size: 20 } }))
        TabContent() {
          Column(){
            Text('Scale down, start a new line, and then clip').fontSize(30).fontColor(0xFF000000)
          }.width('100%').height('100%').backgroundColor(Color.Pink)
        }.tabBar (SubTabBarStyle.of ('Start [Scale down, start a new line, and then clip; Scale down, start a new line, and then clip] End')
          .labelStyle({ overflow: TextOverflow.Clip, maxLines: 2, minFontSize: 15, maxFontSize: 15, heightAdaptivePolicy: TextHeightAdaptivePolicy.MIN_FONT_SIZE_FIRST,
            font: { size: 20 } }))
        TabContent() {
          Column() {
            Text('Start a new line').fontSize(30).fontColor(0xFF000000)
          }
          .width('100%').height('100%').backgroundColor(Color.Pink)
        }.tabBar(SubTabBarStyle.of('Start [Start a new line; Start a new line; Start a new line; Start a new line; Start a new line] End')
          .labelStyle({ overflow: TextOverflow.Clip, maxLines: 10, minFontSize: 10, heightAdaptivePolicy: TextHeightAdaptivePolicy.MAX_LINES_FIRST,
            font: { size: 20 } }))
      }
      .vertical(true).scrollable(true)
      .barMode(BarMode.Fixed)
      .barHeight(720)
      .barWidth(200).animationDuration(400)
      .onChange((index: number) => {
        console.info(index.toString())
      })
      .height('100%').width('100%')
    }
    .height('100%')
  }
}

tabContent4

Example 6

// xxx.ets
@Entry
@Component
struct TabContentExample6 {
  private controller: TabsController = new TabsController()
  @State text: string = "2"
  @State tabPadding: number = 0;
  @State symmetricExtensible: boolean = false;
  @State layoutMode: LayoutMode = LayoutMode.VERTICAL;
  @State verticalAlign: VerticalAlign = VerticalAlign.Center;

  build() {
    Column() {
      Row() {
        Button("padding+10 " + this.tabPadding)
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.tabPadding += 10
          })
          .margin({ right: '6%', bottom: '12vp' })
        Button("padding-10 " + this.tabPadding)
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.tabPadding -= 10
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("Add Text")
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.text += 'Add Text'
          })
          .margin({ right: '6%', bottom: '12vp' })
        Button ("Reset Text")
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.text = "2"
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("Set SymmetricExtensible to " + this.symmetricExtensible)
          .width('100%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.symmetricExtensible = !this.symmetricExtensible
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("Vertical Layout")
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.layoutMode = LayoutMode.VERTICAL;
          })
          .margin({ right: '6%', bottom: '12vp' })
        Button ("horizontal Layout")
          .width('47%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.layoutMode = LayoutMode.HORIZONTAL;
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("VerticalAlign.Top")
          .width('100%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.verticalAlign = VerticalAlign.Top;
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("VerticalAlign.Center")
          .width('100%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.verticalAlign = VerticalAlign.Center;
          })
          .margin({ bottom: '12vp' })
      }

      Row() {
        Button ("VerticalAlign.Bottom")
          .width('100%')
          .height(50)
          .margin({ top: 5 })
          .onClick((event?: ClickEvent) => {
            this.verticalAlign = VerticalAlign.Bottom;
          })
          .margin({ bottom: '12vp' })
      }


      Tabs({ barPosition: BarPosition.End, controller: this.controller }) {
        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Pink)
        }.tabBar(BottomTabBarStyle.of($r("sys.media.ohos_app_icon"), "1"))

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Green)
        }.tabBar(BottomTabBarStyle.of($r("sys.media.ohos_app_icon"), this.text)
          .padding(this.tabPadding)
          .verticalAlign(this.verticalAlign)
          .layoutMode(this.layoutMode)
          .symmetricExtensible(this.symmetricExtensible))

        TabContent() {
          Column().width('100%').height('100%').backgroundColor(Color.Blue)
        }.tabBar(BottomTabBarStyle.of($r("sys.media.ohos_app_icon"), "3"))
      }
      .animationDuration(300)
      .height('60%')
      .backgroundColor(0xf1f3f5)
      .barMode(BarMode.Fixed)
    }
    .width('100%')
    .height(500)
    .margin({ top: 5 })
    .padding('24vp')
  }
}

tabContent4

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