How to use

exists

method

in

com.lody.virtual.server.pm.VUserManagerService

private void checkUserId(int userId) {
  if (!VUserManagerService.get().exists(userId)) {
    throw new SecurityException("Invalid userId " + userId);
  }
}

@Override
public int getUserSerialNumber(int userHandle) {
  synchronized (mPackagesLock) {
    if (!exists(userHandle)) return -1;
    return getUserInfoLocked(userHandle).serialNumber;
  }
}

  private void checkUserId(int userId) {
    if (!VUserManagerService.get().exists(userId)) {
      throw new IllegalStateException("Invalid userId " + userId);
    }
  }
}

@Override
public boolean isAppInstalledAsUser(int userId, String packageName) {
  if (packageName == null || !VUserManagerService.get().exists(userId)) {
    return false;
  }
  PackageSetting setting = PackageCacheManager.getSetting(packageName);
  if (setting == null) {
    return false;
  }
  return setting.isInstalled(userId);
}

public void setPackageHidden(int userId, String packageName, boolean hidden) {
  PackageSetting ps = PackageCacheManager.getSetting(packageName);
  if (ps != null && VUserManagerService.get().exists(userId)) {
    ps.setHidden(userId, hidden);
    mPersistenceLayer.save();
  }
}

@Override
public synchronized boolean installPackageAsUser(int userId, String packageName) {
  if (VUserManagerService.get().exists(userId)) {
    PackageSetting ps = PackageCacheManager.getSetting(packageName);
    if (ps != null) {
      if (!ps.isInstalled(userId)) {
        ps.setInstalled(userId, true);
        notifyAppInstalled(ps, userId);
        mPersistenceLayer.save();
        return true;
      }
    }
  }
  return false;
}

@Override
public boolean clearPackageAsUser(int userId, String packageName) throws RemoteException {
  if (!VUserManagerService.get().exists(userId)) {
    return false;
  }
  PackageSetting ps = PackageCacheManager.getSetting(packageName);
  if (ps != null) {
    int[] userIds = getPackageInstalledUsers(packageName);
    if (!ArrayUtils.contains(userIds, userId)) {
      return false;
    }
    if (userIds.length == 1) {
      clearPackage(packageName);
    } else {
      // Just hidden it
      VActivityManagerService.get().killAppByPkg(packageName, userId);
      ps.setInstalled(userId, false);
      mPersistenceLayer.save();
      FileUtils.deleteDir(VEnvironment.getDataUserPackageDirectory(userId, packageName));
      FileUtils.deleteDir(VEnvironment.getVirtualPrivateStorageDir(userId, packageName));
    }
    return true;
  }
  return false;
}

@Override
public synchronized boolean uninstallPackageAsUser(String packageName, int userId) {
  if (!VUserManagerService.get().exists(userId)) {
    return false;
  }
  PackageSetting ps = PackageCacheManager.getSetting(packageName);
  if (ps != null) {
    int[] userIds = getPackageInstalledUsers(packageName);
    if (!ArrayUtils.contains(userIds, userId)) {
      return false;
    }
    if (userIds.length == 1) {
      uninstallPackageFully(ps);
    } else {
      // Just hidden it
      VActivityManagerService.get().killAppByPkg(packageName, userId);
      ps.setInstalled(userId, false);
      notifyAppUninstalled(ps, userId);
      mPersistenceLayer.save();
      FileUtils.deleteDir(VEnvironment.getDataUserPackageDirectory(userId, packageName));
      FileUtils.deleteDir(VEnvironment.getVirtualPrivateStorageDir(userId, packageName));
    }
    return true;
  }
  return false;
}

@Override
public int getUserSerialNumber(int userHandle) {
  synchronized (mPackagesLock) {
    if (!exists(userHandle)) return -1;
    return getUserInfoLocked(userHandle).serialNumber;
  }
}

@Override
public int getUserSerialNumber(int userHandle) {
  synchronized (mPackagesLock) {
    if (!exists(userHandle)) return -1;
    return getUserInfoLocked(userHandle).serialNumber;
  }
}

private void checkUserId(int userId) {
  if (!VUserManagerService.get().exists(userId)) {
    throw new SecurityException("Invalid userId " + userId);
  }
}

private void checkUserId(int userId) {
  if (!VUserManagerService.get().exists(userId)) {
    throw new SecurityException("Invalid userId " + userId);
  }
}

  private void checkUserId(int userId) {
    if (!VUserManagerService.get().exists(userId)) {
      throw new IllegalStateException("Invalid userId " + userId);
    }
  }
}

  private void checkUserId(int userId) {
    if (!VUserManagerService.get().exists(userId)) {
      throw new IllegalStateException("Invalid userId " + userId);
    }
  }
}

@Override
public boolean isAppInstalledAsUser(int userId, String packageName) {
  if (packageName == null || !VUserManagerService.get().exists(userId)) {
    return false;
  }
  PackageSetting setting = PackageCacheManager.getSetting(packageName);
  if (setting == null) {
    return false;
  }
  return setting.isInstalled(userId);
}

@Override
public boolean isAppInstalledAsUser(int userId, String packageName) {
  if (packageName == null || !VUserManagerService.get().exists(userId)) {
    return false;
  }
  PackageSetting setting = PackageCacheManager.getSetting(packageName);
  if (setting == null) {
    return false;
  }
  return setting.isInstalled(userId);
}

public void setPackageHidden(int userId, String packageName, boolean hidden) {
  PackageSetting ps = PackageCacheManager.getSetting(packageName);
  if (ps != null && VUserManagerService.get().exists(userId)) {
    ps.setHidden(userId, hidden);
    mPersistenceLayer.save();
  }
}

public void setPackageHidden(int userId, String packageName, boolean hidden) {
  PackageSetting ps = PackageCacheManager.getSetting(packageName);
  if (ps != null && VUserManagerService.get().exists(userId)) {
    ps.setHidden(userId, hidden);
    mPersistenceLayer.save();
  }
}

@Override
public synchronized boolean installPackageAsUser(int userId, String packageName) {
  if (VUserManagerService.get().exists(userId)) {
    PackageSetting ps = PackageCacheManager.getSetting(packageName);
    if (ps != null) {
      if (!ps.isInstalled(userId)) {
        ps.setInstalled(userId, true);
        notifyAppInstalled(ps, userId);
        mPersistenceLayer.save();
        return true;
      }
    }
  }
  return false;
}

@Override
public synchronized boolean installPackageAsUser(int userId, String packageName) {
  if (VUserManagerService.get().exists(userId)) {
    PackageSetting ps = PackageCacheManager.getSetting(packageName);
    if (ps != null) {
      if (!ps.isInstalled(userId)) {
        ps.setInstalled(userId, true);
        notifyAppInstalled(ps, userId);
        mPersistenceLayer.save();
        return true;
      }
    }
  }
  return false;
}