如何拉起设置应用的主界面

import { Want , common } from '@kit.AbilityKit'; 
import { BusinessError } from '@kit.BasicServicesKit'; 
 
// 拉起设置应用的WLAN页面 
function startSettingsWifiSettingsAbilityExplicit(context: common.UIAbilityContext): void { 
  let want: Want = { 
    bundleName: 'com.huawei.hmos.settings', 
    abilityName: 'com.huawei.hmos.settings.MainAbility' 
  }; 
  context.startAbility(want) 
    .then(() => { 
      // ... 
    }) 
    .catch((err: BusinessError) => { 
      console.error(`Failed to startAbility. Code: ${err.code}, message: ${err.message}`); 
    }); 
} 
 
@Entry 
@Component 
struct Index { 
  @State message: string = 'Hello World'; 
 
  build() { 
    Row() { 
      Column() { 
        Button(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
          .onClick(() => { 
            const context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext; 
            startSettingsWifiSettingsAbilityExplicit(context); 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}