# @ohos.notification (Notification)

The **Notification** module provides notification management capabilities, covering notifications, notification slots, notification subscription, notification enabled status, and notification badge status.

> **NOTE**
>
> The APIs provided by this module are no longer maintained since API version 9. You are advised to use [@ohos.notificationManager](js-apis-notificationManager.md).
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
>
> Notification subscription and unsubscription APIs are available only to system applications.

## Modules to Import

```ts
import Notification from '@ohos.notification';
```

## Notification.publish

publish(request: NotificationRequest, callback: AsyncCallback\<void\>): void

Publishes a notification. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                       | Mandatory | Description                                       |
| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish. |
| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                       |

**Example**

```ts
import NotificationManager from '@ohos.notificationManager';
import Base from '@ohos.base';

// publish callback
let publishCallback = (err: Base.BusinessError) => {
  if (err) {
    console.error(`publish failed, code is ${err}`);
  } else {
    console.info("publish success");
  }
}
// NotificationRequest object
let notificationRequest: NotificationManager.NotificationRequest = {
  id: 1,
  content: {
    contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
    normal: {
      title: "test_title",
      text: "test_text",
      additionalText: "test_additionalText"
    }
  }
};
Notification.publish(notificationRequest, publishCallback);
```

## Notification.publish

publish(request: NotificationRequest): Promise\<void\>

Publishes a notification. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                       | Mandatory | Description                                       |
| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish. |

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import NotificationManager from '@ohos.notificationManager';
import Base from '@ohos.base';

// NotificationRequest object
let notificationRequest: NotificationManager.NotificationRequest = {
  id: 1,
  content: {
    contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
    normal: {
      title: "test_title",
      text: "test_text",
      additionalText: "test_additionalText"
    }
  }
};
Notification.publish(notificationRequest).then(() => {
  console.info("publish success");
}).catch((err: Base.BusinessError) => {
  console.error(`publish failed, code is ${err}`);
});
```

## Notification.cancel

cancel(id: number, label: string, callback: AsyncCallback\<void\>): void

Cancels a notification with the specified ID and label. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                |
| -------- | --------------------- | ---- | -------------------- |
| id       | number                | Yes  | Notification ID.              |
| label    | string                | Yes  | Notification label.            |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("cancel failed " + JSON.stringify(err));
  } else {
    console.info("cancel success");
  }
}
Notification.cancel(0, "label", cancelCallback);
```



## Notification.cancel

cancel(id: number, label?: string): Promise\<void\>

Cancels a notification with the specified ID and optional label. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name | Type  | Mandatory | Description    |
| ----- | ------ | ---- | -------- |
| id    | number | Yes  | Notification ID.  |
| label | string | No  | Notification label. This parameter is left empty by default. |

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

Notification.cancel(0).then(() => {
	console.info("cancel success");
}).catch((err: Base.BusinessError) => {
  console.error(`cancel failed, code is ${err}`);
});
```



## Notification.cancel

cancel(id: number, callback: AsyncCallback\<void\>): void

Cancels a notification with the specified ID. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                |
| -------- | --------------------- | ---- | -------------------- |
| id       | number                | Yes  | Notification ID.              |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("cancel failed " + JSON.stringify(err));
  } else {
    console.info("cancel success");
  }
}
Notification.cancel(0, cancelCallback);
```



## Notification.cancelAll

cancelAll(callback: AsyncCallback\<void\>): void

Cancels all notifications. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                |
| -------- | --------------------- | ---- | -------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelAllCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("cancelAll failed " + JSON.stringify(err));
  } else {
    console.info("cancelAll success");
  }
}
Notification.cancelAll(cancelAllCallback);
```

## Notification.cancelAll

cancelAll(): Promise\<void\>

Cancels all notifications. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

Notification.cancelAll().then(() => {
	console.info("cancelAll success");
}).catch((err: Base.BusinessError) => {
  console.error(`cancelAll failed, code is ${err}`);
});
```

## Notification.addSlot

addSlot(type: SlotType, callback: AsyncCallback\<void\>): void

Adds a notification slot of a specified type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                  |
| -------- | --------------------- | ---- | ---------------------- |
| type     | [SlotType](#slottype)              | Yes  | Type of the notification slot to add. |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.  |

**Example**

```ts
import Base from '@ohos.base';

// addSlot callback
let addSlotCallBack = (err: Base.BusinessError) => {
  if (err) {
    console.info("addSlot failed " + JSON.stringify(err));
  } else {
    console.info("addSlot success");
  }
}
Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION, addSlotCallBack);
```

## Notification.addSlot

addSlot(type: SlotType): Promise\<void\>

Adds a notification slot of a specified type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name | Type    | Mandatory | Description                  |
| ---- | -------- | ---- | ---------------------- |
| type | [SlotType](#slottype) | Yes  | Type of the notification slot to add. |

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION).then(() => {
  console.info("addSlot success");
}).catch((err: Base.BusinessError) => {
  console.error(`addSlot failed, code is ${err}`);
});
```

## Notification.getSlot

getSlot(slotType: SlotType, callback: AsyncCallback\<NotificationSlot\>): void

Obtains a notification slot of a specified type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                             | Mandatory | Description                                                       |
| -------- | --------------------------------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype)                          | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes. |
| callback | AsyncCallback\<[NotificationSlot](#notificationslot)\> | Yes  | Callback used to return the result.                                       |

**Example**

```ts
import Base from '@ohos.base';

// getSlot callback
let getSlotCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("getSlot failed " + JSON.stringify(err));
  } else {
    console.info("getSlot success");
  }
}
let slotType: Notification.SlotType = Notification.SlotType.SOCIAL_COMMUNICATION;
Notification.getSlot(slotType, getSlotCallback);
```

## Notification.getSlot

getSlot(slotType: SlotType): Promise\<NotificationSlot\>

Obtains a notification slot of a specified type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type    | Mandatory | Description                                                       |
| -------- | -------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes. |

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<NotificationSlot\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let slotType: Notification.SlotType = Notification.SlotType.SOCIAL_COMMUNICATION;
Notification.getSlot(slotType).then((data) => {
  console.info("getSlot success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`getSlot failed, code is ${err}`);
});
```

## Notification.getSlots

getSlots(callback: AsyncCallback\<Array\<NotificationSlot>>): void

Obtains all notification slots. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                             | Mandatory | Description                |
| -------- | --------------------------------- | ---- | -------------------- |
| callback | AsyncCallback\<Array\<[NotificationSlot](#notificationslot)>> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

// getSlots callback
function getSlotsCallback(err: Base.BusinessError) {
  if (err) {
    console.info("getSlots failed " + JSON.stringify(err));
  } else {
    console.info("getSlots success");
  }
}
Notification.getSlots(getSlotsCallback);
```

## Notification.getSlots

getSlots(): Promise\<Array\<NotificationSlot\>>

Obtains all notification slots of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<Array\<[NotificationSlot](#notificationslot)\>\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

Notification.getSlots().then((data) => {
  console.info("getSlots success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`getSlots failed, code is ${err}`);
});
```

## Notification.removeSlot

removeSlot(slotType: SlotType, callback: AsyncCallback\<void\>): void

Removes a notification slot of a specified type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                                                       |
| -------- | --------------------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype)              | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes. |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.                                       |

**Example**

```ts
import Base from '@ohos.base';

// removeSlot callback
let removeSlotCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("removeSlot failed " + JSON.stringify(err));
  } else {
    console.info("removeSlot success");
  }
}
let slotType: Notification.SlotType = Notification.SlotType.SOCIAL_COMMUNICATION;
Notification.removeSlot(slotType, removeSlotCallback);
```

## Notification.removeSlot

removeSlot(slotType: SlotType): Promise\<void\>

Removes a notification slot of a specified type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type    | Mandatory | Description                                                       |
| -------- | -------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes. |

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

let slotType: Notification.SlotType = Notification.SlotType.SOCIAL_COMMUNICATION;
Notification.removeSlot(slotType).then(() => {
  console.info("removeSlot success");
}).catch((err: Base.BusinessError) => {
  console.error(`removeSlot failed, code is ${err}`);
});
```

## Notification.removeAllSlots

removeAllSlots(callback: AsyncCallback\<void\>): void

Removes all notification slots. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory | Description                |
| -------- | --------------------- | ---- | -------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let removeAllCallBack = (err: Base.BusinessError) => {
  if (err) {
    console.info("removeAllSlots failed " + JSON.stringify(err));
  } else {
    console.info("removeAllSlots success");
  }
}
Notification.removeAllSlots(removeAllCallBack);
```

## Notification.removeAllSlots

removeAllSlots(): Promise\<void\>

Removes all notification slots. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

Notification.removeAllSlots().then(() => {
  console.info("removeAllSlots success");
}).catch((err: Base.BusinessError) => {
  console.error(`removeAllSlots failed, code is ${err}`);
});
```

## Notification.getActiveNotificationCount

getActiveNotificationCount(callback: AsyncCallback\<number\>): void

Obtains the number of active notifications of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                  | Mandatory | Description                  |
| -------- | ---------------------- | ---- | ---------------------- |
| callback | AsyncCallback\<number\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let getActiveNotificationCountCallback = (err: Base.BusinessError, data: number) => {
  if (err) {
    console.info("getActiveNotificationCount failed " + JSON.stringify(err));
  } else {
    console.info("getActiveNotificationCount success");
  }
}

Notification.getActiveNotificationCount(getActiveNotificationCountCallback);
```

## Notification.getActiveNotificationCount

getActiveNotificationCount(): Promise\<number\>

Obtains the number of active notifications of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type             | Description                                       |
| ----------------- | ------------------------------------------- |
| Promise\<number\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

Notification.getActiveNotificationCount().then((data: number) => {
  console.info("getActiveNotificationCount success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`getAllActiveNotifications failed, code is ${err}`);
});
```

## Notification.getActiveNotifications

getActiveNotifications(callback: AsyncCallback<Array\<NotificationRequest\>>): void

Obtains active notifications of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                                        | Mandatory | Description                          |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------ |
| callback | AsyncCallback<Array\<[NotificationRequest](#notificationrequest)\>> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';
import NotificationManager from '@ohos.notificationManager';

let getActiveNotificationsCallback = (err: Base.BusinessError, data: NotificationManager.NotificationRequest[]) => {
  if (err) {
    console.info("getActiveNotifications failed " + JSON.stringify(err));
  } else {
    console.info("getActiveNotifications success");
  }
}

Notification.getActiveNotifications(getActiveNotificationsCallback);
```

## Notification.getActiveNotifications

getActiveNotifications(): Promise\<Array\<[NotificationRequest](#notificationrequest)\>\>

Obtains active notifications of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type                                                        | Description                                   |
| ------------------------------------------------------------ | --------------------------------------- |
| Promise\<Array\<[NotificationRequest](#notificationrequest)\>\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';
import NotificationManager from '@ohos.notificationManager';

Notification.getActiveNotifications().then((data: NotificationManager.NotificationRequest[]) => {
  console.info("removeGroupByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`removeGroupByBundle failed, code is ${err}`);
});
```

## Notification.cancelGroup<sup>8+</sup>

cancelGroup(groupName: string, callback: AsyncCallback\<void\>): void

Cancels notifications under a notification group of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type                 | Mandatory | Description                        |
| --------- | --------------------- | ---- | ---------------------------- |
| groupName | string                | Yes  | Name of the notification group, which is specified through [NotificationRequest](#notificationrequest) when the notification is published. |
| callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let cancelGroupCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("cancelGroup failed " + JSON.stringify(err));
  } else {
    console.info("cancelGroup success");
  }
}

let groupName: string = "GroupName";

Notification.cancelGroup(groupName, cancelGroupCallback);
```

## Notification.cancelGroup<sup>8+</sup>

cancelGroup(groupName: string): Promise\<void\>

Cancels notifications under a notification group of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type  | Mandatory | Description          |
| --------- | ------ | ---- | -------------- |
| groupName | string | Yes  | Name of the notification group. |

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

let groupName: string = "GroupName";
Notification.cancelGroup(groupName).then(() => {
	console.info("cancelGroup success");
}).catch((err: Base.BusinessError) => {
  console.error(`cancelGroup failed, code is ${err}`);
});
```

## Notification.isSupportTemplate<sup>8+</sup>

isSupportTemplate(templateName: string, callback: AsyncCallback\<boolean\>): void

Checks whether a specified template exists. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name      | Type                    | Mandatory | Description                      |
| ------------ | ------------------------ | ---- | -------------------------- |
| templateName | string                   | Yes  | Template name.                  |
| callback     | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let templateName: string = 'process';
function isSupportTemplateCallback(err: Base.BusinessError, data: boolean) {
  if (err) {
    console.info("isSupportTemplate failed " + JSON.stringify(err));
  } else {
    console.info("isSupportTemplate success");
  }
}

Notification.isSupportTemplate(templateName, isSupportTemplateCallback);
```

## Notification.isSupportTemplate<sup>8+</sup>

isSupportTemplate(templateName: string): Promise\<boolean\>

Checks whether a specified template exists. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name      | Type  | Mandatory | Description    |
| ------------ | ------ | ---- | -------- |
| templateName | string | Yes  | Template name. |

**Return value**

| Type              | Description           |
| ------------------ | --------------- |
| Promise\<boolean\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let templateName: string = 'process';
Notification.isSupportTemplate(templateName).then((data: boolean) => {
  console.info("isSupportTemplate success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`isSupportTemplate failed, code is ${err}`);
});
```

## Notification.requestEnableNotification<sup>8+</sup>

requestEnableNotification(callback: AsyncCallback\<void\>): void

Requests notification to be enabled for this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory | Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let requestEnableNotificationCallback = (err: Base.BusinessError) => {
  if (err) {
    console.info("requestEnableNotification failed " + JSON.stringify(err));
  } else {
    console.info("requestEnableNotification success");
  }
};

Notification.requestEnableNotification(requestEnableNotificationCallback);
```

## Notification.requestEnableNotification<sup>8+</sup>

requestEnableNotification(): Promise\<void\>

Requests notification to be enabled for this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type    | Description        | 
| ------- |------------|
| Promise\<void\> | Promise that returns no value. |  

**Example**

```ts
import Base from '@ohos.base';

Notification.requestEnableNotification().then(() => {
  console.info("requestEnableNotification success");
}).catch((err: Base.BusinessError) => {
  console.error(`requestEnableNotification failed, code is ${err}`);
});
```

## Notification.isDistributedEnabled<sup>8+</sup>

isDistributedEnabled(callback: AsyncCallback\<boolean>): void

Checks whether this device supports distributed notifications. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory | Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

let isDistributedEnabledCallback = (err: Base.BusinessError, data: boolean) => {
  if (err) {
    console.info("isDistributedEnabled failed " + JSON.stringify(err));
  } else {
    console.info("isDistributedEnabled success " + JSON.stringify(data));
  }
};

Notification.isDistributedEnabled(isDistributedEnabledCallback);
```

## Notification.isDistributedEnabled<sup>8+</sup>

isDistributedEnabled(): Promise\<boolean>

Checks whether this device supports distributed notifications. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type              | Description                                         |
| ------------------ | --------------------------------------------- |
| Promise\<boolean\> | Promise used to return the result. |

**Example**

```ts
import Base from '@ohos.base';

Notification.isDistributedEnabled().then((data: boolean) => {
    console.info("isDistributedEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
  console.error(`isDistributedEnabled failed, code is ${err}`);
});
```

## ContentType

**System capability**: SystemCapability.Notification.Notification

| Name                             | Value         | Description              |
| --------------------------------- | ----------- | ------------------ |
| NOTIFICATION_CONTENT_BASIC_TEXT   | NOTIFICATION_CONTENT_BASIC_TEXT | Normal text notification.    |
| NOTIFICATION_CONTENT_LONG_TEXT    | NOTIFICATION_CONTENT_LONG_TEXT | Long text notification.  |
| NOTIFICATION_CONTENT_PICTURE      | NOTIFICATION_CONTENT_PICTURE | Picture-attached notification.    |
| NOTIFICATION_CONTENT_CONVERSATION | NOTIFICATION_CONTENT_CONVERSATION | Conversation notification.    |
| NOTIFICATION_CONTENT_MULTILINE    | NOTIFICATION_CONTENT_MULTILINE | Multi-line text notification. |

## SlotLevel

**System capability**: SystemCapability.Notification.Notification

| Name                             | Value         | Description              |
| --------------------------------- | ----------- | ------------------ |
| LEVEL_NONE                        | 0           | The notification function is disabled.    |
| LEVEL_MIN                         | 1           | The notification function is enabled, but the notification icon is not displayed in the status bar, with no banner or alert tone. |
| LEVEL_LOW                         | 2           | The notification function is enabled, and the notification icon is displayed in the status bar, with no banner or alert tone. |
| LEVEL_DEFAULT                     | 3           | The notification feature is enabled, and the notification icon is displayed in the status bar, with an alert tone but no banner. |
| LEVEL_HIGH                        | 4           | The notification feature is enabled, and the notification icon is displayed in the status bar, with an alert tone and banner. |


## BundleOption<sup>deprecated</sup>

**System capability**: SystemCapability.Notification.Notification

> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [notificationManager.BundleOption](js-apis-inner-notification-notificationCommonDef.md#bundleoption).

| Name  | Type  | Mandatory | Description  |
| ------ | ------ | --- |  ------ |
| bundle | string | Yes | Bundle information of the application. |
| uid    | number | No | User ID. The default value is 0. |

## NotificationKey<sup>deprecated</sup>

**System capability**: SystemCapability.Notification.Notification

> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. <!--Del-->You are advised to use [notificationManager.NotificationKey](js-apis-notificationSubscribe-sys.md#notificationkey).<!--DelEnd-->

| Name | Type  | Readable | Writable | Description    |
| ----- | ------ | ---- | --- | -------- |
| id    | number | Yes | Yes | Notification ID.  |
| label | string | Yes | Yes | Notification label. |


## SlotType

**System capability**: SystemCapability.Notification.Notification

| Name                | Value      | Description      |
| -------------------- | -------- | ---------- |
| UNKNOWN_TYPE         | 0 | Unknown type. |
| SOCIAL_COMMUNICATION | 1 | Notification slot for social communication. |
| SERVICE_INFORMATION  | 2 | Notification slot for service information. |
| CONTENT_INFORMATION  | 3 | Notification slot for content consultation. |
| OTHER_TYPES          | 0xFFFF | Notification slot for other purposes. |


## NotificationActionButton

Describes the button displayed in the notification.

**System capability**: SystemCapability.Notification.Notification

| Name     | Type                                           | Readable | Writable | Description                     |
| --------- | ----------------------------------------------- | --- | ---- | ------------------------- |
| title     | string                                          | Yes | Yes | Button title.                 |
| wantAgent | [WantAgent](../apis-ability-kit/js-apis-wantAgent.md)   | Yes | Yes | **WantAgent** of the button. |
| extras    | { [key: string]: any }                          | Yes | Yes | Extra information of the button.             |
| userInput<sup>8+</sup> | [NotificationUserInput](#notificationuserinput8) | Yes | Yes | User input object.         |


## NotificationBasicContent

Describes the normal text notification.

**System capability**: SystemCapability.Notification.Notification

| Name          | Type  | Readable | Writable | Description                              |
| -------------- | ------ | ---- | ---- | ---------------------------------- |
| title          | string | Yes  | Yes  | Notification title.                        |
| text           | string | Yes  | Yes  | Notification content.                        |
| additionalText | string | Yes  | Yes  | Additional information of the notification. |


## NotificationLongTextContent

Describes the long text notification.

**System capability**: SystemCapability.Notification.Notification

| Name          | Type  | Readable | Writable | Description                            |
| -------------- | ------ | ---- | --- | -------------------------------- |
| title          | string | Yes | Yes | Notification title.                        |
| text           | string | Yes | Yes | Notification content.                        |
| additionalText | string | Yes | Yes | Additional information of the notification. |
| longText       | string | Yes | Yes | Long text of the notification.                    |
| briefText      | string | Yes | Yes | Brief text of the notification. |
| expandedTitle  | string | Yes | Yes | Title of the notification in the expanded state.                |


## NotificationMultiLineContent

Describes the multi-line text notification.

**System capability**: SystemCapability.Notification.Notification

| Name          | Type           | Readable | Writable | Description                            |
| -------------- | --------------- | --- | --- | -------------------------------- |
| title          | string          | Yes | Yes | Notification title.                        |
| text           | string          | Yes | Yes | Notification content.                        |
| additionalText | string          | Yes | Yes | Additional information of the notification. |
| briefText      | string          | Yes | Yes | Brief text of the notification. |
| longTitle      | string          | Yes | Yes | Title of the notification in the expanded state.                |
| lines          | Array\<string\> | Yes | Yes | Multi-line text of the notification.                  |


## NotificationPictureContent

Describes the picture-attached notification.

**System capability**: SystemCapability.Notification.Notification

| Name          | Type          | Readable | Writable | Description                            |
| -------------- | -------------- | ---- | --- | -------------------------------- |
| title          | string         | Yes | Yes | Notification title.                        |
| text           | string         | Yes | Yes | Notification content.                        |
| additionalText | string         | Yes | Yes | Additional information of the notification. |
| briefText      | string         | Yes | Yes | Brief text of the notification. |
| expandedTitle  | string         | Yes | Yes | Title of the notification in the expanded state.                |
| picture        | [image.PixelMap](../apis-image-kit/js-apis-image.md#pixelmap7) | Yes | Yes | Picture attached to the notification.                  |


## NotificationContent

Describes the notification content.

**System capability**: SystemCapability.Notification.Notification

| Name       | Type                                                        | Readable | Writable | Description              |
| ----------- | ------------------------------------------------------------ | ---- | --- | ------------------ |
| contentType | [notification.ContentType](#contenttype)                                  | Yes | Yes | Notification content type.      |
| normal      | [NotificationBasicContent](#notificationbasiccontent)        | Yes | Yes | Normal text.  |
| longText    | [NotificationLongTextContent](#notificationlongtextcontent)  | Yes | Yes | Long text. |
| multiLine   | [NotificationMultiLineContent](#notificationmultilinecontent) | Yes | Yes | Multi-line text.  |
| picture     | [NotificationPictureContent](#notificationpicturecontent)    | Yes | Yes | Picture-attached.  |

## NotificationRequest

Describes the notification request.

**System capability**: SystemCapability.Notification.Notification

| Name                 | Type                                         | Readable | Writable | Description                      |
| --------------------- | --------------------------------------------- | ---- | --- | -------------------------- |
| content               | [NotificationContent](#notificationcontent)   | Yes | Yes | Notification content.                  |
| id                    | number                                        | Yes | Yes | Notification ID.                    |
| slotType              | [notification.SlotType](#slottype)                         | Yes | Yes | Slot type.                  |
| isOngoing             | boolean                                       | Yes | Yes | Whether the notification is an ongoing notification.            |
| isUnremovable         | boolean                                       | Yes | Yes | Whether the notification can be removed.                |
| deliveryTime          | number                                        | Yes | Yes | Time when the notification is sent.              |
| tapDismissed          | boolean                                       | Yes | Yes | Whether the notification is automatically cleared.          |
| autoDeletedTime       | number                                        | Yes | Yes | Time when the notification is automatically cleared.            |
| wantAgent             | [WantAgent](../apis-ability-kit/js-apis-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected after being clicked.  |
| extraInfo             | {[key: string]: any}                          | Yes | Yes | Extended parameters.                  |
| color                 | number                                        | Yes | Yes | Background color of the notification. Not supported currently. |
| colorEnabled          | boolean                                       | Yes | Yes | Whether the notification background color is enabled. Not supported currently. |
| isAlertOnce           | boolean                                       | Yes | Yes | Whether the notification triggers an alert only once. |
| isStopwatch           | boolean                                       | Yes | Yes | Whether to display the stopwatch.          |
| isCountDown           | boolean                                       | Yes | Yes | Whether to display the countdown time.        |
| isFloatingIcon        | boolean                                       | Yes | Yes | Whether the notification is displayed as a floating icon in the status bar.        |
| label                 | string                                        | Yes | Yes | Notification label.                  |
| badgeIconStyle        | number                                        | Yes | Yes | Notification badge type.              |
| showDeliveryTime      | boolean                                       | Yes | Yes | Whether to display the time when the notification is delivered.          |
| actionButtons         | Array\<[NotificationActionButton](#notificationactionbutton)\>             | Yes | Yes | Buttons in the notification. Up to two buttons are allowed.    |
| smallIcon             | [image.PixelMap](../apis-image-kit/js-apis-image.md#pixelmap7) | Yes | Yes | Small notification icon. This field is optional, and the icon size cannot exceed 30 KB. |
| largeIcon             | [image.PixelMap](../apis-image-kit/js-apis-image.md#pixelmap7) | Yes | Yes | Large notification icon. This field is optional, and the icon size cannot exceed 30 KB. |
| creatorBundleName     | string                                        | Yes | No | Name of the bundle that creates the notification.            |
| creatorUid            | number                                        | Yes | No | UID used for creating the notification.             |
| creatorPid            | number                                        | Yes | No | PID used for creating the notification.             |
| creatorUserId<sup>8+</sup>| number                                    | Yes | No | ID of the user who creates the notification.          |
| hashCode              | string                                        | Yes | No | Unique ID of the notification.              |
| groupName<sup>8+</sup>| string                                        | Yes | Yes | Notification group name.                |
| template<sup>8+</sup> | [NotificationTemplate](#notificationtemplate8) | Yes | Yes | Notification template.                  |
| distributedOption<sup>8+</sup>   | [DistributedOptions](#distributedoptions8)                 | Yes | Yes | Distributed notification options.         |
| notificationFlags<sup>8+</sup> | [NotificationFlags](./js-apis-inner-notification-notificationFlags.md)                    | Yes | No | Notification flags.         |
| removalWantAgent<sup>9+</sup> | [WantAgent](../apis-ability-kit/js-apis-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected when it is removed.         |
| badgeNumber<sup>9+</sup> | number                    | Yes | Yes | Number of notifications displayed on the application icon.         |

## DistributedOptions<sup>8+</sup>

Describes distributed notifications options.

**System capability**: SystemCapability.Notification.Notification

| Name                  | Type           | Readable | Writable | Description                              |
| ---------------------- | -------------- | ---- | ---- | ---------------------------------- |
| isDistributed          | boolean        | Yes  | Yes  | Whether the notification is a distributed notification.                 |
| supportDisplayDevices  | Array\<string> | Yes  | Yes  | List of the devices to which the notification can be synchronized.        |
| supportOperateDevices  | Array\<string> | Yes  | Yes  | List of the devices on which the notification can be opened.             |


## NotificationSlot

Describes the notification slot.

**System capability**: SystemCapability.Notification.Notification

| Name                | Type                 | Readable | Writable | Description                    |
| -------------------- | --------------------- | ---- | --- |------------------------|
| type                 | [notification.SlotType](#slottype) | Yes | Yes | Slot type.                 |
| level                | [notification.SlotLevel](#slotlevel)                | Yes | Yes | Notification level. If this parameter is not set, the default value is used based on the notification slot type. |
| desc                 | string                | Yes | Yes | Notification slot description.             |
| badgeFlag            | boolean               | Yes | Yes | Whether to display the badge.               |
| bypassDnd            | boolean               | Yes | Yes | Whether to bypass DND mode in the system.      |
| lockscreenVisibility | number                | Yes | Yes | Mode for displaying the notification on the lock screen.        |
| vibrationEnabled     | boolean               | Yes | Yes | Whether vibration is enabled for the notification.                |
| sound                | string                | Yes | Yes | Notification alert tone.                |
| lightEnabled         | boolean               | Yes | Yes | Whether the indicator blinks for the notification.                 |
| lightColor           | number                | Yes | Yes | Indicator color of the notification.                |
| vibrationValues      | Array\<number\>       | Yes | Yes | Vibration mode of the notification.               |
| enabled<sup>9+</sup> | boolean               | Yes | No | Whether the notification slot is enabled.          |

## NotificationTemplate<sup>8+</sup>

Describes the notification template.

**System capability**: SystemCapability.Notification.Notification

| Name | Type                   | Readable | Writable | Description      |
| ---- | ---------------------- | ---- | ---- | ---------- |
| name | string                 | Yes  | Yes  | Template name. |
| data | Record<string, Object> | Yes  | Yes  | Template data. |


## NotificationUserInput<sup>8+</sup>

Provides the notification user input.

**System capability**: SystemCapability.Notification.Notification

| Name    | Type  | Readable | Writable | Description                         |
| -------- | ------ | --- | ---- | ----------------------------- |
| inputKey | string | Yes | Yes | Key to identify the user input. |