用户手动关闭定位权限之后，回到app再次申请定位权限时，不弹申请弹框了

import common from '@ohos.app.ability.common'; 
@Entry 
@Component 
struct Index { 
  build() { 
    Row() { 
      Column() { 
        Button("去设置").onClick(()=>{ 
          let context = getContext(this) as common.UIAbilityContext; 
          context.startAbility({ 
            bundleName: 'com.huawei.hmos.settings', 
            abilityName: 'com.huawei.hmos.settings.MainAbility', 
            uri: 'application_info_entry', 
            parameters: { 
              pushParams: 'com.example.tosettingdemo' // 应用包名 
            } 
          }); 
        }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}