鸿蒙 向用户申请授权

//1.在开发应用前，需要先申请相机相关权限，确保应用拥有访问xx的权限。在“module.json5”文件中配置xx权限，具体配置方式。

//2.使用接口请求requestPermissionsFromUser用户授权。具体申请方式及校验方式，请参见向用户申请授权。

//3.新建文件

import { abilityAccessCtrl, Context, PermissionRequestResult, common, Permissions } from '@kit.AbilityKit';

import { BusinessError } from '@kit.BasicServicesKit';

class RequestPermissionsFromUser {

  init(context: Context, permissionList: Permissions[]) {

    let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();

  atManager.requestPermissionsFromUser(context,permissionList ).then((data: PermissionRequestResult) => {

      console.info(`requestPermissionsFromUser success, result: ${data}`);

      console.info('requestPermissionsFromUser data permissions:' + data.permissions);

      console.info('requestPermissionsFromUser data authResults:' + data.authResults);

      console.info('requestPermissionsFromUser data dialogShownResults:' + data.dialogShownResults);

      console.info('requestPermissionsFromUser data errorReasons:' + data.errorReasons);

    }).catch((err: BusinessError) => {

      console.error(`requestPermissionsFromUser fail, code: ${err.code}, message: ${err.message}`);

    });

  }

}

export const requestPermissionsFromUser: RequestPermissionsFromUser = new RequestPermissionsFromUser()

//4.函数调用

import { requestPermissionsFromUser } from "./RequestPermissionsFromUser";

import { Permissions } from "@kit.AbilityKit";

import { abilityAccessCtrl, Context, PermissionRequestResult, common } from '@kit.AbilityKit';

import { BusinessError } from '@kit.BasicServicesKit';

@ComponentV2

export struct ScanKit {

  @Event onScanResult: (result: string) => void;

  aboutToAppear(): void {

    let permissionList: Permissions[] = ['ohos.permission.CAMERA']

    let context: Context = this.getUIContext().getHostContext() as common.UIAbilityContext;

    requestPermissionsFromUser.init(context, permissionList)

  }

  build() {

    Column() {

}

    .width('100%')

    .height('100%')

  }

}