@ohos.userIAM.userAuth (User Authentication) (System API)
The userIAM.userAuth module provides user authentication capabilities in identity authentication scenarios, such as device unlocking, payment, and app login.
NOTE
- The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
- This topic describes only the system APIs provided by the module. For details about its public APIs, see @ohos.userIAM.userAuth (User Authentication).
Modules to Import
import userIAM_userAuth from '@ohos.userIAM.userAuth';
WindowModeType10+
Enumerates the window types of the authentication widget.
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Name | Value | Description |
---|---|---|
DIALOG_BOX | 1 | Dialog box. |
FULLSCREEN | 2 | Full screen. |
WidgetParam10+
Represents the information presented on the user authentication page.
System capability: SystemCapability.UserIAM.UserAuth.Core
Name | Type | Mandatory | Description |
---|---|---|---|
windowMode | WindowModeType | No | Display format of the user authentication page. The default value is WindowModeType.DIALOG_BOX. System API: This is a system API. |
NoticeType10+
Defines the type of the user authentication notification.
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Name | Value | Description |
---|---|---|
WIDGET_NOTICE | 1 | Notification from the user authentication widget. |
userAuth.sendNotice10+
sendNotice(noticeType: NoticeType, eventData: string): void
Sends a notification from the user authentication widget.
Required permissions: ohos.permission.SUPPORT_USER_AUTH
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
noticeType | NoticeType | Yes | Notification type. |
eventData | string | Yes | Event data. |
Error codes
For details about the error codes, see User Authentication Error Codes.
ID | Error Message |
---|---|
201 | Permission verification failed. |
202 | The caller is not a system application. |
401 | Incorrect parameters. |
12500002 | General operation error. |
Example
import userAuth from '@ohos.userIAM.userAuth';
interface EventData {
widgetContextId: number;
event: string;
version: string;
payload: PayLoad;
}
interface PayLoad {
type: Object[];
}
try {
const eventData : EventData = {
widgetContextId: 123456,
event: 'EVENT_AUTH_TYPE_READY',
version: '1',
payload: {
type: ['pin']
} as PayLoad,
};
const jsonEventData = JSON.stringify(eventData);
let noticeType = userAuth.NoticeType.WIDGET_NOTICE;
userAuth.sendNotice(noticeType, jsonEventData);
console.log('sendNotice success');
} catch (error) {
console.error('sendNotice catch error: ' + JSON.stringify(error));
}
UserAuthWidgetMgr10+
Provides APIs for managing the user authentication widget. You can use the APIs to register the user authentication widget with UserAuthWidgetMgr for management and scheduling.
on10+
on(type: 'command', callback: IAuthWidgetCallback): void
Subscribes to commands from the user authentication framework for the user authentication widget.
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
type | 'command' | Yes | Event type. The vlaue is command, which indicates the command sent from the user authentication framework to the user authentication widget. |
callback | IAuthWidgetCallback | Yes | Callback invoked to return the command from the user authentication framework to the user authentication widget. |
Error codes
For details about the error codes, see User Authentication Error Codes.
ID | Error Message |
---|---|
401 | Incorrect parameters. |
12500002 | General operation error. |
Example
import userAuth from '@ohos.userIAM.userAuth';
const userAuthWidgetMgrVersion = 1;
try {
let userAuthWidgetMgr = userAuth.getUserAuthWidgetMgr(userAuthWidgetMgrVersion);
console.log('get userAuthWidgetMgr instance success');
userAuthWidgetMgr.on('command', {
sendCommand(cmdData) {
console.log('The cmdData is ' + cmdData);
}
})
console.log('subscribe authentication event success');
} catch (error) {
console.error('userAuth widgetMgr catch error: ' + JSON.stringify(error));
}
off10+
off(type: 'command', callback?: IAuthWidgetCallback): void
Unsubscribes from commands sent from the user authentication framework.
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
type | 'command' | Yes | Event type. The value is command, which indicates the command sent from the user authentication framework to the user authentication widget. |
callback | IAuthWidgetCallback | No | Callback for the command sent from the user authentication framework to the user authentication widget. |
Error codes
For details about the error codes, see User Authentication Error Codes.
ID | Error Message |
---|---|
401 | Incorrect parameters. |
12500002 | General operation error. |
Example
import userAuth from '@ohos.userIAM.userAuth';
const userAuthWidgetMgrVersion = 1;
try {
let userAuthWidgetMgr = userAuth.getUserAuthWidgetMgr(userAuthWidgetMgrVersion);
console.log('get userAuthWidgetMgr instance success');
userAuthWidgetMgr.off('command', {
sendCommand(cmdData) {
console.log('The cmdData is ' + cmdData);
}
})
console.log('cancel subscribe authentication event success');
} catch (error) {
console.error('userAuth widgetMgr catch error: ' + JSON.stringify(error));
}
userAuth.getUserAuthWidgetMgr10+
getUserAuthWidgetMgr(version: number): UserAuthWidgetMgr
Obtains a UserAuthWidgetMgr instance for user authentication.
NOTE
A UserAuthInstance instance can be used for an authentication only once.
Required permissions: ohos.permission.SUPPORT_USER_AUTH
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
version | number | Yes | Version of the user authentication widget. |
Return value
Type | Description |
---|---|
UserAuthWidgetMgr | UserAuthWidgetMgr instance obtained. |
Error codes
For details about the error codes, see User Authentication Error Codes.
ID | Error Message |
---|---|
201 | Permission verification failed. |
202 | The caller is not a system application. |
401 | Incorrect parameters. |
12500002 | General operation error. |
Example
import userAuth from '@ohos.userIAM.userAuth';
let userAuthWidgetMgrVersion = 1;
try {
let userAuthWidgetMgr = userAuth.getUserAuthWidgetMgr(userAuthWidgetMgrVersion);
console.log('get userAuthWidgetMgr instance success');
} catch (error) {
console.error('userAuth widgetMgr catch error: ' + JSON.stringify(error));
}
IAuthWidgetCallback10+
Provides the callback for returning the commands sent from the user authentication framework to the user authentication widget.
sendCommand10+
sendCommand(cmdData: string): void
Called to return the command sent from the user authentication framework to the user authentication widget.
System capability: SystemCapability.UserIAM.UserAuth.Core
System API: This is a system API.
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
cmdData | string | Yes | Command sent from the user authentication framework to the user authentication widget. |
Example
import userAuth from '@ohos.userIAM.userAuth';
const userAuthWidgetMgrVersion = 1;
try {
let userAuthWidgetMgr = userAuth.getUserAuthWidgetMgr(userAuthWidgetMgrVersion);
console.log('get userAuthWidgetMgr instance success');
userAuthWidgetMgr.on('command', {
sendCommand(cmdData) {
console.log('The cmdData is ' + cmdData);
}
})
console.log('subscribe authentication event success');
} catch (error) {
console.error('userAuth widgetMgr catch error: ' + JSON.stringify(error));
}