class MainViewModel :ViewModel(){
private val _text = MutableLiveData<String>()
val text get() = _text.distinctUntilChanged()
fun setToA(){
_text.value = "A"
}
fun setToB(){
_text.value = "B"
}
}
I'm observing text
in Fragment
like this.
//in Fragment
btnA.setOnClickListener {
mainviewmodel.setToA()
}
btnB.setOnClickListener {
mainviewmodel.setToB()
}
mainviewmodel.text.observe(viewLifecycleOwner){
//TODO
}
I sometimes click btnA
2 times in a row.
Whenever I setValue with same value (such as A
) in a row,
observer
doesn't trigger. observer
triggers when only text
is changed.
( whenever A
-> B
or B
-> A
)
I want to let observer
triggers when I setValue
text with same value in a row.
How can I do it??
This is happening because you are using distinctUntilChanged(). Try like below.
val text : LiveData<String>
get() = _text