#鸿蒙通关秘籍#解决 HarmonyOS Next 中媒体读写权限问题的最佳实践

在 HarmonyOS Next 中，媒体读写权限的申请是实现图片选择和拍照功能的基础。通过以下步骤实施权限检查和申请：

1. 检查应用是否已获得权限，若未获得，则申请权限。

import bundleManager from '@ohos.bundle.bundleManager';
import abilityAccessCtrl from '@ohos.abilityAccessCtrl';

async function checkPermission(permission) {
    const atManager = abilityAccessCtrl.createAtManager();

    const bundleInfo = await bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
    const appInfo = bundleInfo.appInfo;
    const tokenId = appInfo.accessTokenId;

    const grantStatus = await atManager.checkAccessToken(tokenId, permission);
    return grantStatus === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED;
}

// 申请权限
async function requestPermission(context, permissions) {
    const atManager = abilityAccessCtrl.createAtManager();
    const result = await atManager.requestPermissionsFromUser(context, permissions);

    return result.authResults.every(status => status === 0);
}