申请权限成功后，仍然提示 BusinessError 202: Permission denied. Non-system APP calling system API

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下面是报错信息和权限申请的信息

struct Index {const permissions: Array<Permissions> = ['ohos.permission.GET_INSTALLED_BUNDLE_LIST'];

function reqPermissionsFromUser(permissions: Array<Permissions>, context: common.UIAbilityContext): void {
  let appFlags :number = bundleManager.ApplicationFlag.GET_APPLICATION_INFO_DEFAULT;
  let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
  // requestPermissionsFromUser会判断权限的授权状态来决定是否唤起弹窗
  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
        console.info("data:" + JSON.stringify(data));
        console.info("data permissions:" + data.permissions);
        console.info("data authResults:" + data.authResults);
        bundleManager.getAllApplicationInfo(appFlags, (err, data) => {
          if (err) {
            hilog.error(0x0000, 'testTag', 'getAllApplicationInfo failed: %{public}s', err.message);
          } else {
            hilog.info(0x0000, 'testTag', 'getAllApplicationInfo successfully: %{public}s', JSON.stringify(data));
          }
        });

      } else {
        // 用户拒绝授权，提示用户必须授权才能访问当前页面的功能，并引导用户到系统设置中打开相应的权限
        return;
      }
    }
    // 授权成功
  }).catch((err: BusinessError) => {
    console.error(`Failed to request permissions from user. Code is ${err.code}, message is ${err.message}`);
  })
}

@Entry
@Component
struct Index {
aboutToAppear() {
    const context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
    reqPermissionsFromUser(permissions, context);
  }
...
}

深开鸿_王石

这个需要的是系统应用权限，要改自己的应用为系统应用

申请权限成功后，仍然提示 BusinessError 202: Permission denied. Non-system APP calling system API

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