HarmonyOS 权限申请拒绝问题

1、可以使用二次申请授权接口，通过调用requestPermissionOnSetting()直接拉起权限设置弹框，引导用户授予权限

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/request-user-authorization-second-V5

2、这块目前也是不支持的，只可以先跳转到应用信息页面，由用户点击进入权限页面进行勾选

3、可以检测用户是否获取权限，demo示例如下：

//首先检测用户权限需要先获取Token，token是异步回调的
import abilityAccessCtrl, { Permissions } from '@ohos.abilityAccessCtrl';
async accessToken(permission: Permissions): Promise<abilityAccessCtrl.GrantStatus> {
  let atManager = abilityAccessCtrl.createAtManager()
  let grantStatus: abilityAccessCtrl.GrantStatus

  let tokenID: number
  try {
  let bundleInfo = await bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION)
  tokenID = bundleInfo.appInfo.accessTokenId
} catch (err) {
  console.log('location 获取地理位置token失败')
}

try {
  grantStatus = await atManager.checkAccessToken(tokenID,permission)
} catch (err) {
  console.log('获取地理位置token检测失败')
}

return grantStatus
}
//其次获取token后，开始查询用户权限状态
async checkPermission() {

  let permissions: Array<Permissions> = ['ohos.permission.LOCATION','ohos.permission.APPROXIMATELY_LOCATION']
  let locationStatus = await this.accessToken(permissions[0])
  let roximateyStatus = await this.accessToken(permissions[1])
  if (locationStatus == abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED &&
    roximateyStatus == abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED) {
    console.log('location 已经申请完权限了')
  } else {
    console.log('location 需要申请权限')
    this.requestPermission()
  }
}