@ohos.bundle.bundleMonitor (bundleMonitor)
The Bundle.bundleMonitor module provides APIs for listens for bundle installation, uninstall, and updates.
NOTE
The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
Modules to Import
import bundleMonitor from '@ohos.bundle.bundleMonitor';
Required Permissions
Permission | Permission Level | Description |
---|---|---|
ohos.permission.LISTEN_BUNDLE_CHANGE | system_basic | Permission to listen for bundle installation, uninstall, and updates. |
For details, see Permission Levels.
BundleChangeInfo
System capability: SystemCapability.BundleManager.BundleFramework.Core
System API: This is a system API.
Name | Template | Readable | Writable | Description |
---|---|---|---|---|
bundleName | string | Yes | No | Name of the bundle whose status changes. |
userId | number | Yes | No | ID of the user whose bundle status changes. |
BundleChangedEvent
Enumerates the types of events to listen for.
System capability: SystemCapability.BundleManager.BundleFramework.Core
System API: This is a system API.
Name | Description |
---|---|
add | Bundle addition events. |
update | Bundle update events. |
remove | Bundle removal events. |
bundleMonitor.on
on(type: BundleChangedEvent, callback: Callback<BundleChangedInfo>): void
Subscribes to bundle installation, uninstall, and update events.
NOTE
This API must be used together with bundleMonitor.off. When the lifecycle of a component, page, or application ends, use bundleMonitor.off to unsubscribe from the bundle installation, uninstall, and update events.
Required permissions: ohos.permission.LISTEN_BUNDLE_CHANGE
System API: This is a system API.
System capability: SystemCapability.BundleManager.BundleFramework.Core
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
type | BundleChangedEvent | Yes | Type of the event to subscribe to. |
callback | callback<BundleChangedInfo> | Yes | Callback used for the subscription. |
Example
import bundleMonitor from '@ohos.bundle.bundleMonitor';
import { BusinessError } from '@ohos.base';
try {
bundleMonitor.on('add', (bundleChangeInfo) => {
console.info(`bundleName : ${bundleChangeInfo.bundleName} userId : ${bundleChangeInfo.userId}`);
})
} catch (errData) {
let message = (errData as BusinessError).message;
let errCode = (errData as BusinessError).code;
console.log(`errData is errCode:${errCode} message:${message}`);
}
bundleMonitor.off
off(type: BundleChangedEvent, callback?: Callback<BundleChangedInfo>): void
Unsubscribes from bundle installation, uninstall, and update events.
Required permissions: ohos.permission.LISTEN_BUNDLE_CHANGE
System API: This is a system API.
System capability: SystemCapability.BundleManager.BundleFramework.Core
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
type | BundleChangedEvent | Yes | Type of the event to unsubscribe from. |
callback | callback<BundleChangedInfo> | No | Callback used for the unsubscription. By default, no value is passed, and all callbacks of the current event are unsubscribed from. |
Example
import bundleMonitor from '@ohos.bundle.bundleMonitor';
import { BusinessError } from '@ohos.base';
try {
bundleMonitor.off('add');
} catch (errData) {
let message = (errData as BusinessError).message;
let errCode = (errData as BusinessError).code;
console.log(`errData is errCode:${errCode} message:${message}`);
}