PermissionUtils.ets
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import { abilityAccessCtrl, bundleManager, common, Permissions, Want } from '@kit.AbilityKit'
import { BusinessError } from '@kit.BasicServicesKit'
import { AppUtils } from './AppUtils'
import { Logger } from './Logger'
/**
* 权限工具类
* */
export class PermissionUtils {
//相机权限
static CAMERA: Permissions = 'ohos.permission.CAMERA'
//文件权限
static READ_MEDIA: Permissions = 'ohos.permission.READ_MEDIA'
static WRITE_MEDIA: Permissions = 'ohos.permission.WRITE_MEDIA'
private static tokenId: number = 0
/**检查权限是否授权*/
static async checkPermissions(permission: Permissions): Promise<boolean> {
let hasPermissions = false;
let grantStatus: abilityAccessCtrl.GrantStatus = await PermissionUtils.checkAccessToken(permission);
if (grantStatus === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED) {
// 已经授权，可以继续访问目标操作
hasPermissions = true;
} else {
hasPermissions = false;
// 申请日历权限
}
return hasPermissions;
}
/**动态申请权限*/
static reqPermissionsFromUser(permissions: Array<Permissions>, component: Object): Promise<boolean> {
return new Promise((resolve, fail) => {
let context = getContext(component) as common.UIAbilityContext;
let atManager = abilityAccessCtrl.createAtManager();
atManager.requestPermissionsFromUser(context, permissions).then((data) => {
let grantStatus: Array<number> = data.authResults;
let length: number = grantStatus.length;
for (let i = 0; i < length; i++) {
if (grantStatus[i] === 0) {
// 用户授权，可以继续访问目标操作
resolve(true);
} else {
resolve(false)
}
}
}).catch((err: Error) => {
fail(err)
})
});
}
/**跳转设置页面*/
static openPermissionsInSystemSettings(context: Object): void {
let uiContext = getContext(context) as common.UIAbilityContext;
let wantInfo: Want = {
bundleName: 'com.huawei.hmos.settings',
abilityName: 'com.huawei.hmos.settings.MainAbility',
uri: 'application_info_entry',
parameters: {
pushParams: AppUtils.getPackageName(uiContext) // 打开指定应用的设置页面
}
}
uiContext.startAbility(wantInfo)
}
private static async checkAccessToken(permission: Permissions): Promise<abilityAccessCtrl.GrantStatus> {
let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
let grantStatus: abilityAccessCtrl.GrantStatus = abilityAccessCtrl.GrantStatus.PERMISSION_DENIED;
// 获取应用程序的accessTokenID
if (PermissionUtils.tokenId == 0) {
try {
let bundleInfo: bundleManager.BundleInfo = await bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
let appInfo: bundleManager.ApplicationInfo = bundleInfo.appInfo;
PermissionUtils.tokenId = appInfo.accessTokenId;
} catch (error) {
const err: BusinessError = error as BusinessError;
}
}
// 校验应用是否被授予权限
try {
grantStatus = await atManager.checkAccessToken(PermissionUtils.tokenId, permission);
} catch (error) {
const err: BusinessError = error as BusinessError;
}
return grantStatus;
}
}