16e7c69efSopenharmony_ci# Access Permission Control 26e7c69efSopenharmony_ci 36e7c69efSopenharmony_ci### Introduction 46e7c69efSopenharmony_ci 56e7c69efSopenharmony_ciThis sample shows how `@ohos.abilityAccessCtrl` works to implement app permission control. The display effect is as follows: 66e7c69efSopenharmony_ci 76e7c69efSopenharmony_ci  86e7c69efSopenharmony_ci 96e7c69efSopenharmony_ci### Concepts 106e7c69efSopenharmony_ci 116e7c69efSopenharmony_ciApplication access control: provides application permission management, including authentication, authorization, and authorization revocation. 126e7c69efSopenharmony_ci 136e7c69efSopenharmony_ci### Required Permissions 146e7c69efSopenharmony_ci 156e7c69efSopenharmony_ci- ohos.permission.GET_SENSITIVE_PERMISSIONS 166e7c69efSopenharmony_ci 176e7c69efSopenharmony_ci- ohos.permission.REVOKE_SENSITIVE_PERMISSIONS 186e7c69efSopenharmony_ci 196e7c69efSopenharmony_ci- ohos.permission.GRANT_SENSITIVE_PERMISSIONS 206e7c69efSopenharmony_ci 216e7c69efSopenharmony_ci- ohos.permission.GET_BUNDLE_INFO_PRIVILEGED 226e7c69efSopenharmony_ci 236e7c69efSopenharmony_ci- ohos.permission.GET_BUNDLE_INFO 246e7c69efSopenharmony_ci 256e7c69efSopenharmony_ci- ohos.permission.MICROPHONE 266e7c69efSopenharmony_ci 276e7c69efSopenharmony_ci 286e7c69efSopenharmony_ci### Usage 296e7c69efSopenharmony_ci 306e7c69efSopenharmony_ci1. Open the app. A dialog box is displayed, asking you whether to grant the permission. Touch **Cancel**. 316e7c69efSopenharmony_ci 326e7c69efSopenharmony_ci2. The permission check screen is displayed. Touch the **Check Permission** button. A message is displayed, indicating that the permission is not granted. 336e7c69efSopenharmony_ci 346e7c69efSopenharmony_ci3. Close the app and open it again. A dialog box is displayed, asking you whether to grant the permission. Touch **OK**. 356e7c69efSopenharmony_ci 366e7c69efSopenharmony_ci4. The permission check screen is displayed. Touch the **Check Permission** button. A message is displayed, indicating that the permission has been granted. 376e7c69efSopenharmony_ci 386e7c69efSopenharmony_ci5. Close the app and open it again. No dialog box is displayed. Touch the **Check Permission** button. A message is displayed, indicating that the permission has been granted. 396e7c69efSopenharmony_ci 406e7c69efSopenharmony_ci### Constraints 416e7c69efSopenharmony_ci 426e7c69efSopenharmony_ci- This sample can only be run on standard-system devices. 436e7c69efSopenharmony_ci 446e7c69efSopenharmony_ci- Before building a project, you need to run **Make Module 'entry'**. 456e7c69efSopenharmony_ci 466e7c69efSopenharmony_ci- This sample requires DevEco Studio 3.1 Canary1 (Build Version: 3.1.0.100) to compile and run. 476e7c69efSopenharmony_ci 486e7c69efSopenharmony_ci- The ohos.permission.GET_SENSITIVE_PERMISSIONS, ohos.permission.REVOKE_SENSITIVE_PERMISSIONS, and ohos.permission.GRANT_SENSITIVE_PERMISSIONS permissions used in this sample are of the system_core level. You need to configure signatures for these permissions. For details about the application permission level (APL), see [Permission List](https://gitee.com/openharmony/docs/blob/master/en/application-dev/security/permission-list.md). 49
