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设置应用内主题换肤

概述

对于采用ArkTS开发的应用,提供了应用内组件的主题换肤功能,支持局部的深浅色切换及动态换肤。目前,该功能只支持设置应用内主题换肤,暂不支持在UIAbility或窗口层面进行主题设置,同时也不支持C-API和Node-API。

自定义主题色

当应用需要使用换肤功能时,应自定义主题颜色。CustomTheme用于自定义主题色的内容,其属性可选,仅需对需要修改的token字段赋值,其余token将继承系统默认颜色值,可参考系统默认的token颜色值。请参照以下示例自定义主题色:

import { CustomColors, CustomTheme } from '@kit.ArkUI';

export class AppColors implements CustomColors {
// 自定义主题色
public brand: ResourceColor = '#FF75D9';
// 使用$r,让一级警示色在深色和浅色模式下,设置为不同的颜色
public warning: ResourceColor = $r('sys.color.ohos_id_color_warning');
}

export class AppTheme implements CustomTheme {
public colors: AppColors = new AppColors();
}

export let gAppTheme: CustomTheme = new AppTheme();

设置应用内组件自定义主题色

  • 若在页面入口处设置应用内组件自定义主题色,需确保在页面build前执行ThemeControl.setDefaultTheme

    示例代码中,onWillApplyTheme回调函数用于使自定义组件获取当前生效的Theme对象。

    // Index.ets
    import { Theme, ThemeControl } from '@kit.ArkUI';
    import { gAppTheme } from './AppTheme';

    //在页面build前执行ThemeControl
    ThemeControl.setDefaultTheme(gAppTheme);

    @Entry
    @Component
    struct DisplayPage {
    @State menuItemColor: ResourceColor = $r('sys.color.background_primary');

    onWillApplyTheme(theme: Theme) {
    this.menuItemColor = theme.colors.backgroundPrimary;
    }

    build() {
    Column() {
    List({ space: 10 }) {
    ListItem() {
    Column({ space: '5vp' }) {
    Text('Color mode')
    .margin({ top: '5vp', left: '14fp' })
    .width('100%')
    Row() {
    Column() {
    Text('Light')
    .fontSize('16fp')
    .textAlign(TextAlign.Start)
    .alignSelf(ItemAlign.Center)
    Radio({ group: 'light or dark', value: 'light' })
    .checked(true)
    }
    .width('50%')

    Column() {
    Text('Dark')
    .fontSize('16fp')
    .textAlign(TextAlign.Start)
    .alignSelf(ItemAlign.Center)
    Radio({ group: 'light or dark', value: 'dark' })
    }
    .width('50%')
    }
    }
    .width('100%')
    .height('90vp')
    .borderRadius('10vp')
    .backgroundColor(this.menuItemColor)
    }

    ListItem() {
    Column() {
    Text('Brightness')
    .width('100%')
    .margin({ top: '5vp', left: '14fp' })
    Slider({ value: 40, max: 100 })
    }
    .width('100%')
    .height('70vp')
    .borderRadius('10vp')
    .backgroundColor(this.menuItemColor)
    }

    ListItem() {
    Column() {
    Row() {
    Column({ space: '5vp' }) {
    Text('Touch sensitivity')
    .fontSize('16fp')
    .textAlign(TextAlign.Start)
    .width('100%')
    Text('Increase the touch sensitivity of your screen' +
    ' for use with screen protectors')
    .fontSize('12fp')
    .fontColor(Color.Blue)
    .textAlign(TextAlign.Start)
    .width('100%')
    }
    .alignSelf(ItemAlign.Center)
    .margin({ left: '14fp' })
    .width('75%')

    Toggle({ type: ToggleType.Switch, isOn: true })
    .margin({ right: '14fp' })
    .alignSelf(ItemAlign.Center)
    }
    .width('100%')
    .height('80vp')
    }
    .width('100%')
    .borderRadius('10vp')
    .backgroundColor(this.menuItemColor)
    }
    ListItem() {
    Column() {
    Text('Warning')
    .width('100%')
    .margin({ top: '5vp', left: '14fp' })
    Button('Text')
    .type(ButtonType.Capsule)
    .role(ButtonRole.ERROR)
    .width('40%')
    }
    .width('100%')
    .height('70vp')
    .borderRadius('10vp')
    .backgroundColor(this.menuItemColor)
    }
    }
    }
    .padding('10vp')
    .backgroundColor('#dcdcdc')
    .width('100%')
    .height('100%')
    }
    }
  • 若在UIAbility中设置应用内组件自定义主题色,需在onWindowStageCreate()方法的windowStage.loadContent的完成时回调中调用ThemeControl.setDefaultTheme,设置应用内组件的自定义主题色。

    // EntryAbility.ets
    import {AbilityConstant, UIAbility, Want } from '@kit.AbilityKit';
    import { hilog } from '@kit.PerformanceAnalysisKit';
    import { window, CustomColors, ThemeControl } from '@kit.ArkUI';

    class AppColors implements CustomColors {
    fontPrimary = 0xFFD53032;
    iconOnPrimary = 0xFFD53032;
    iconFourth = 0xFFD53032;
    }

    const abilityThemeColors = new AppColors();

    export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
    }

    onDestroy() {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
    // Main window is created, set main page for this ability
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');

    windowStage.loadContent('pages/Index', (err, data) => {
    if (err.code) {
    hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
    return;
    }
    hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? '');
    // 在onWindowStageCreate()方法中setDefaultTheme
    ThemeControl.setDefaultTheme({ colors: abilityThemeColors });
    hilog.info(0x0000, 'testTag', '%{public}s', 'ThemeControl.setDefaultTheme done');
    });
    }
    }

    • 当setDefaultTheme的参数为undefined时,会清除先前设置的自定义主题,默认token值对应的色值参考系统缺省token色值
    • setDefaultTheme需要在ArkUI初始化后即windowStage.loadContent的完成时回调中使用。

设置应用局部页面自定义主题风格

通过设置WithTheme,将自定义主题Theme的配色应用于内部组件的默认样式。在WithTheme的作用范围内,组件的配色会根据Theme的配色进行调整。

在自定义节点BuilderNode中使用WithTheme,为了确保显示效果正确,需手动传递系统环境变化事件,触发节点的全量更新,详细请参考BuilderNode系统环境变化更新

如示例所示,使用WithTheme({ theme: this.CustomTheme })可将作用域内组件的配色设置为自定义主题风格。后续可以通过更新this.CustomTheme来更换主题风格。onWillApplyTheme回调函数用于使自定义组件能够获取当前生效的Theme对象。

import { CustomColors, CustomTheme, Theme } from '@kit.ArkUI';
import { common } from '@kit.AbilityKit';
//请将$r('app.color.xxx')替换为实际资源文件
class AppColors implements CustomColors {
public fontPrimary: ResourceColor = $r('app.color.brand_purple');
public backgroundEmphasize: ResourceColor = $r('app.color.brand_purple');
}

class AppColorsSec implements CustomColors {
public fontPrimary: ResourceColor = $r('app.color.brand');
public backgroundEmphasize: ResourceColor = $r('app.color.brand');
}

class AppTheme implements CustomTheme {
public colors: AppColors = new AppColors();
}

class AppThemeSec implements CustomTheme {
public colors: AppColors = new AppColorsSec();
}

@Entry
@Component
struct DisplayPage1 {
@State customTheme: CustomTheme = new AppTheme();
// 请将$r('app.string.SetCustomThemeStyle')替换为实际资源文件,在本示例中该资源文件的value值为"设置应用局部页面自定义主题风格"
@State message: ResourceStr = $r('app.string.SetCustomThemeStyle');
count = 0;

build() {
WithTheme({ theme: this.customTheme }) {
Row(){
Column() {
Text('WithTheme')
.fontSize(30)
.margin({bottom: 10})
Text(this.message)
.margin({bottom: 10})
Button('change theme').onClick(() => {
this.count++;
if (this.count > 1) {
this.count = 0;
}
switch (this.count) {
case 0:
this.customTheme = new AppTheme();
break;
case 1:
this.customTheme = new AppThemeSec();
break;
default:
break;
}
})
}
.width('100%')
}
.height('100%')
.width('100%')
}
}
}

设置应用页面局部深浅色

通过WithTheme可以设置三种颜色模式,跟随系统模式,浅色模式和深色模式。

在WithTheme的作用范围内,组件的样式资源值会根据指定的模式,读取对应的深浅色模式系统和应用资源值。这意味着,在WithTheme作用范围内,组件的配色会根据所指定的深浅模式进行调整。

如下面的示例所示,通过WithTheme({ colorMode: ThemeColorMode.DARK }),可以将作用范围内的组件设置为深色模式。

设置局部深浅色时,需要添加dark.json资源文件,深浅色模式才会生效。

dark.json数据示例:

{
"color": [
{
"name": "start_window_background",
"value": "#000000"
}
]
}
import { ThemeControl } from '@kit.ArkUI';

ThemeControl.setDefaultTheme(undefined);

@Entry
@Component
struct DisplayPage3 {
@State message: string = 'Hello World';
@State colorMode: ThemeColorMode = ThemeColorMode.DARK;

build() {
WithTheme({ colorMode: this.colorMode }) {
Row() {
Column() {
Text(this.message)
.fontSize(50)
.fontWeight(FontWeight.Bold)
Button('Switch ColorMode').onClick(() => {
if (this.colorMode === ThemeColorMode.LIGHT) {
this.colorMode = ThemeColorMode.DARK;
} else if (this.colorMode === ThemeColorMode.DARK) {
this.colorMode = ThemeColorMode.LIGHT;
}
})
}
.width('100%')
}
.backgroundColor($r('sys.color.background_primary'))
.height('100%')
// 扩展安全区,实现沉浸式深浅色变更效果
.expandSafeArea(
[SafeAreaType.SYSTEM], [SafeAreaEdge.TOP, SafeAreaEdge.END, SafeAreaEdge.BOTTOM, SafeAreaEdge.START])
}
}
}

系统缺省token色值

Token场景类别Light说明Dark说明
theme.colors.brand品牌色#ff0a59f7#ff317af7
theme.colors.warning一级警示色#ffe84026#ffd94838
theme.colors.alert二级警示色#ffed6f21#ffdb6b42
theme.colors.confirm确认色#ff64bb5c#ff5be854
theme.colors.fontPrimary一级文本#e5000000#e5ffffff
theme.colors.fontSecondary二级文本#99000000#99ffffff
theme.colors.fontTertiary三级文本#66000000#66ffffff
theme.colors.fontFourth四级文本#33000000#33ffffff
theme.colors.fontEmphasize高亮文本#ff0a59f7#ff317af7
theme.colors.fontOnPrimary一级文本反色#ffffffff#ff000000
theme.colors.fontOnSecondary二级文本反色#99ffffff#99000000
theme.colors.fontOnTertiary三级文本反色#66ffffff#66000000
theme.colors.fontOnFourth四级文本反色#33ffffff#33000000
theme.colors.iconPrimary一级图标#e5000000#e5ffffff
theme.colors.iconSecondary二级图标#99000000#99ffffff
theme.colors.iconTertiary三级图标#66000000#66ffffff
theme.colors.iconFourth四级图标#33000000#33ffffff
theme.colors.iconEmphasize高亮图标#ff0a59f7#ff317af7
theme.colors.iconSubEmphasize高亮辅助图标#660a59f7#66317af7
theme.colors.iconOnPrimary一级图标反色#ffffffff#ff000000
theme.colors.iconOnSecondary二级图标反色#99ffffff#99000000
theme.colors.iconOnTertiary三级图标反色#66ffffff#66000000
theme.colors.iconOnFourth四级图标反色#33ffffff#33000000
theme.colors.backgroundPrimary一级背景(实色/不透明色)#ffffffff#ffe5e5e5
theme.colors.backgroundSecondary二级背景(实色/不透明色)#fff1f3f5#ff191a1c
theme.colors.backgroundTertiary三级背景(实色/不透明色)#ffe5e5ea#ff202224
theme.colors.backgroundFourth四级背景(实色/不透明色)#ffd1d1d6#ff2e3033
theme.colors.backgroundEmphasize高亮背景(实色/不透明色)#ff0a59f7#ff317af7
theme.colors.compForegroundPrimary前背景#ff000000#ffe5e5e5
theme.colors.compBackgroundPrimary白色背景#ffffffff#ffffffff
theme.colors.compBackgroundPrimaryTran白色透明背景#ffffffff#33ffffff
theme.colors.compBackgroundPrimaryContrary常亮背景#ffffffff#ffe5e5e5
theme.colors.compBackgroundGray灰色背景#fff1f3f5#ffe5e5ea
theme.colors.compBackgroundSecondary二级背景#19000000#19ffffff
theme.colors.compBackgroundTertiary三级背景#0c000000#0cffffff
theme.colors.compBackgroundEmphasize高亮背景#ff0a59f7#ff317af7
theme.colors.compBackgroundNeutral黑色中性高亮背景#ff000000#ffffffff
theme.colors.compEmphasizeSecondary20%高亮背景#330a59f7#33317af7
theme.colors.compEmphasizeTertiary10%高亮背景#190a59f7#19317af7
theme.colors.compDivider分割线颜色#33000000#33ffffff
theme.colors.compCommonContrary通用反色#ffffffff#ff000000
theme.colors.compBackgroundFocus获焦态背景色#fff1f3f5#ff000000
theme.colors.compFocusedPrimary获焦态一级反色#e5000000#e5ffffff
theme.colors.compFocusedSecondary获焦态二级反色#99000000#99ffffff
theme.colors.compFocusedTertiary获焦态三级反色#66000000#66ffffff
theme.colors.interactiveHover通用悬停交互式颜色#0c000000#0cffffff
theme.colors.interactivePressed通用按压交互式颜色#19000000#19ffffff
theme.colors.interactiveFocus通用获焦交互式颜色#ff0a59f7#ff317af7
theme.colors.interactiveActive通用激活交互式颜色#ff0a59f7#ff317af7
theme.colors.interactiveSelect通用选择交互式颜色#33000000#33ffffff
theme.colors.interactiveClick通用点击交互式颜色#19000000#19ffffff

各个token色值可影响的组件可参考Colors接口说明。