Authorization persistence

persistPermissionExample

import { BusinessError } from '@kit.BasicServicesKit';
import { picker } from '@kit.CoreFileKit';
import { fileShare } from '@kit.CoreFileKit';

async function persistPermissionExample() {
    try {
        let DocumentSelectOptions = new picker.DocumentSelectOptions();
        let documentPicker = new picker.DocumentViewPicker();
        let uris = await documentPicker.select(DocumentSelectOptions);
        let policyInfo: fileShare.PolicyInfo = {
            uri: uris[0],
            operationMode: fileShare.OperationMode.READ_MODE,
        };
        let policies: Array<fileShare.PolicyInfo> = [policyInfo];
        fileShare.persistPermission(policies).then(() => {
            console.info("persistPermission successfully");
        }).catch((err: BusinessError<Array<fileShare.PolicyErrorResult>>) => {
            console.error("persistPermission failed with error message: " + err.message + ", error code: " + err.code);
            if (err.code == 13900001 && err.data) {
                for (let i = 0; i < err.data.length; i++) {
                    console.error("error code : " + JSON.stringify(err.data[i].code));
                    console.error("error uri : " + JSON.stringify(err.data[i].uri));
                    console.error("error reason : " + JSON.stringify(err.data[i].message));
                }
            }
        });
    } catch (error) {
        let err: BusinessError = error as BusinessError;
        console.error('persistPermission failed with err: ' + JSON.stringify(err));
    }
}

Notes

1. It is recommended to store persisted authorization file information locally for subsequent activation.
2. Persisted authorization data is stored in the system database and needs to be activated after app or device restart.
3. The persistPermission interface only takes effect on 2in1 devices and requires permission.
4. Uninstalling the app will clear all authorization data.

revokePermissionExample

import { BusinessError } from '@kit.BasicServicesKit';
import { fileShare } from '@kit.CoreFileKit';

async function revokePermissionExample() {
    try {
        let uri = "file://docs/storage/Users/username/tmp.txt";
        let policyInfo: fileShare.PolicyInfo = {
            uri: uri,
            operationMode: fileShare.OperationMode.READ_MODE,
        };
        let policies: Array<fileShare.PolicyInfo> = [policyInfo];
        fileShare.revokePermission(policies).then(() => {
            console.info("revokePermission successfully");
        }).catch((err: BusinessError<Array<fileShare.PolicyErrorResult>>) => {
            console.error("revokePermission failed with error message: " + err.message + ", error code: " + err.code);
            if (err.code == 13900001 && err.data) {
                for (let i = 0; i < err.data.length; i++) {
                    console.error("error code : " + JSON.stringify(err.data[i].code));
                    console.error("error uri : " + JSON.stringify(err.data[i].uri));
                    console.error("error reason : " + JSON.stringify(err.data[i].message));
                }
            }
        });
    } catch (error) {
        let err: BusinessError = error as BusinessError;
        console.error('revokePermission failed with err: ' + JSON.stringify(err));
    }
}

Notes

1. The uri in the example comes from the app's persisted data storage.
2. Activate persisted permissions as needed.
3. The persistPermission interface is only effective on 2in1 devices and requires permission.