切换应用深浅色模式,切换应用的深浅色模式，且不跟随系统。本例从资源分类的角度实现。

//resources目录结构 
-resources 
--base//浅色模式访问 
---element 
----color.json 
//color.json 
{ 
  "color": [ 
  { 
    "name": "start_window_background", 
    "value": "#FFFFFF" 
  } 
  ] 
} 
 
--dark//深色模式访问 
---element 
----color.json 
//color.json 
{ 
  "color": [ 
  { 
    "name": "start_window_background", 
    "value": "#000000" 
  } 
  ] 
}
//Index.ets 
import ConfigurationConstant from '@ohos.app.ability.ConfigurationConstant'; 
import hilog from '@ohos.hilog'; 
 
 
@Entry 
@Component 
struct Index { 
  @State message: string = 'Hello World'; 
 
  build() { 
    Row() { 
      Column() { 
        Text("light")  //应用设置颜色模式为LIGHT 
          .fontSize(40) 
          .fontWeight(FontWeight.Bold) 
          .onClick(() => {hilog.info(0x0000, 'testTag', 'before setColorMode'); 
            let context = getContext().getApplicationContext() 
            context.setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_LIGHT); 
            console.log('------------ appUpdateConfiguration -----------'+'DARK'); 
          }) 
          .fontColor("#ffdd1a1a") 
          .backgroundColor($r("app.color.start_window_background")) 
 
 
        Text("dark")  // 应用设置颜色模式为DARK 
          .fontSize(40) 
          .fontWeight(FontWeight.Bold) 
          .onClick(() => { 
            hilog.info(0x0000, 'testTag', 'before setColorMode'); 
            let context = getContext().getApplicationContext() 
            context.setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_DARK); 
            console.log('------------ appUpdateConfiguration -----------'+'DARK'); 
          }) 
          .fontColor("#ffdd1a1a") 
          .backgroundColor($r("app.color.start_window_background")) 
      } 
      .width('100%') 
    } 
    .backgroundColor("#ffffff") 
    .height('100%') 
  } 
}