How do you people deal with LiveData nullability? ...

# android

[Eugen Martynov]

How do you people deal with LiveData nullability? I used it for data binding but it never nulls

[Matej Drobnič]

I made this little extension method that I use everywhere:

inline fun <T> LiveData<T>.observeNotNull(
    lifecycleOwner: LifecycleOwner,
    crossinline method: Function1<T, Unit>
) {
    observe(lifecycleOwner, Observer {
        if (it != null) {
            method(it)
        }
    })
}

[Matej Drobnič]

and then I always call .observeNotNull not observe

[Eugen Martynov]

Thanks! What about when you call value?

[Matej Drobnič]

I never do that.

[Matej Drobnič]

But I guess you can do val value = liveData.value ?: error ("X should be non-null")

[Matej Drobnič]

if you are sure it cannot be null