```val loginPage = loginPageResponseBody.loginPage...

# announcements

[Sudhir Singh Khanger]

val loginPage = loginPageResponseBody.loginPage
if (loginPage != null) {
    loginPageData.postValue(loginPage)
}

If I am doing the null check then why does postValue method complains about requiring Expected non-nullable value. I don't get this error with loginPage.let { loginPageData.postValue(it) }.

[allan.conda]

what’s the type of loginPage?

[Sudhir Singh Khanger]

It's nullable and that's why I am doing the manual null check.

[Vampire]

Probably loginPage has a custom getter, so the returned value can change anytime and it cannot be smart-casted to non-null. With the let the custom getter is not called again, but it should probably be ?.let.

[Sudhir Singh Khanger]

With ?.let it warns about it being an unnnecessary safe call.

[Vampire]

With loginPage being nullable? o_O

[Sudhir Singh Khanger]

I think unnecessary safe call thingy was coming because of the null check. Without null check I have to use ?.let and with null check I can use let.

[allan.conda]

detail is important otherwise we can’t help you effectively. If you’re using anything else other than loginPageResponseBody.loginPage there would be no such issue

[Sudhir Singh Khanger]

I am sorry if I have omitted any details that might be of use.

[allan.conda]

Ah, no, I guess it’s my question that’s wrong. I asked about the type, I know it’s of nullable type. What is loginPage? can you share a snippet, or at least the structure? Otherwise we are left to guess.

[allan.conda]

Hmm I also got a similar issue before but it was just an IDE issue, it was fine after I restarted.