管理员登录到应用程序失败的逻辑

Question

当我尝试以管理员身份登录到我的Android应用程序时，它会自动关闭。

if (usersData.getPhone().equals(phone))
{
    if (usersData.getPassword().equals(password))
    {
        if (parentDbName.equals("Admins"))
        {
            Toast.makeText(LoginActivity.this, "Welcome Admin, you are logged in Successfully...", Toast.LENGTH_SHORT).show();
            loadingBar.dismiss();

            Intent intent = new Intent(LoginActivity.this, AdminCategoryActivity.class);
            startActivity(intent);
        }
        else if (parentDbName.equals("Users"))
        {
            Toast.makeText(LoginActivity.this, "logged in Successfully...", Toast.LENGTH_SHORT).show();
            loadingBar.dismiss();

            Intent intent = new Intent(LoginActivity.this, HomeActivity.class);
            Prevalent.CurrentOnlineUser = usersData;
            startActivity(intent);
        }

我该如何克服这个问题？