#鸿蒙通关秘籍#如何设置应用局部页面自定义主题风格，并同时可配置子组件深浅色模式？

啥都不说了，我直接上码：
@Entry
@Component
struct Index {
build() {
Column() {
Column() {
Text('无`WithTheme`')
.fontSize(40)
.fontWeight(FontWeight.Bold)
}
.justifyContent(FlexAlign.Center)
.width('100%')
.height('33%')
.backgroundColor($r('sys.color.background_primary'))

WithTheme({ colorMode: ThemeColorMode.DARK }) {
Column() {
Text('WithTheme')
.fontSize(40)
.fontWeight(FontWeight.Bold)
Text('DARK')
.fontSize(40)
.fontWeight(FontWeight.Bold)
}
.justifyContent(FlexAlign.Center)
.width('100%')
.height('33%')
.backgroundColor($r('sys.color.background_primary'))
}

WithTheme({ colorMode: ThemeColorMode.LIGHT }) {
Column() {
Text('WithTheme')
.fontSize(40)
.fontWeight(FontWeight.Bold)
Text('LIGHT')
.fontSize(40)
.fontWeight(FontWeight.Bold)
}
.justifyContent(FlexAlign.Center)
.width('100%')
.height('33%')
.backgroundColor($r('sys.color.background_primary'))
}
}
.height('100%')
.expandSafeArea([SafeAreaType.SYSTEM], [SafeAreaEdge.TOP, SafeAreaEdge.END, SafeAreaEdge.BOTTOM, SafeAreaEdge.START])
}
}