harmony 鸿蒙Distributed Scheduler Subsystem ChangeLog
Distributed Scheduler Subsystem ChangeLog
cl.DistributedManagerService.1 continuationManager API Changes
- Event names passed to the continuationManager API do not comply with the OpenHarmony API specifications.
- The continuationManager.on API does not have a unified return value for various events, which does not comply with the OpenHarmony API specifications.
The following changes have been made:
- The device selection event name of continuationManager.on and continuationManager.off is changed from deviceConnect to deviceSelected, and the device deselection event name is changed from deviceDisconnect to deviceUnselected.
- The continuationManager.on API returns Callback<Array<ContinuationResult>> for all events.
Change Impacts
The application developed based on earlier versions needs to adapt the new APIs. Otherwise, the original service logic will be affected.
Key API/Component Changes
- Involved APIs:
continuationManager.on; continuationManager.off;
- Before change:
function on(type: "deviceConnect", token: number, callback: Callback<Array<ContinuationResult>>): void;
function off(type: "deviceConnect", token: number): void;
function on(type: "deviceDisconnect", token: number, callback: Callback<Array<string>>): void;
function off(type: "deviceDisconnect", token: number): void;
- After change:
function on(type: "deviceSelected", token: number, callback: Callback<Array<ContinuationResult>>): void;
function off(type: "deviceSelected", token: number): void;
function on(type: "deviceUnselected", token: number, callback: Callback<Array<ContinuationResult>>): void;
function off(type: "deviceUnselected", token: number): void;
Adaptation Guide
Change the event names. The sample code is as follows:
Device selection event of continuationManager.on:
let token = 1;
try {
continuationManager.on("deviceSelected", token, (data) => {
console.info('onDeviceSelected len: ' + data.length);
for (let i = 0; i < data.length; i++) {
console.info('onDeviceSelected deviceId: ' + JSON.stringify(data[i].id));
console.info('onDeviceSelected deviceType: ' + JSON.stringify(data[i].type));
console.info('onDeviceSelected deviceName: ' + JSON.stringify(data[i].name));
}
});
} catch (err) {
console.error('on failed, cause: ' + JSON.stringify(err));
}
Device selection event of continuationManager.off:
let token = 1;
try {
continuationManager.off("deviceSelected", token);
} catch (err) {
console.error('off failed, cause: ' + JSON.stringify(err));
}
Device deselection event of continuationManager.on:
let token = 1;
try {
continuationManager.on("deviceUnselected", token, (data) => {
console.info('onDeviceUnselected len: ' + data.length);
for (let i = 0; i < data.length; i++) {
console.info('onDeviceUnselected deviceId: ' + JSON.stringify(data[i].id));
console.info('onDeviceUnselected deviceType: ' + JSON.stringify(data[i].type));
console.info('onDeviceUnselected deviceName: ' + JSON.stringify(data[i].name));
}
console.info('onDeviceUnselected finished.');
});
} catch (err) {
console.error('on failed, cause: ' + JSON.stringify(err));
}
Device deselection event of continuationManager.off:
let token = 1;
try {
continuationManager.off("deviceUnselected", token);
} catch (err) {
console.error('off failed, cause: ' + JSON.stringify(err));
}
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