How to get result of two mutablelivedata into one

Does that help It's a practice designed to restrict modification of the value from outside the class.
LiveData is read-only. MutableLiveData, as the name implies, allows one to change the value it holds.

I hope this helps you . I am just testing ViewModel and LiveData of Android Architechture Components. I have this basic Activity with one EditText to receive a number from the user and when clicking the Convert button then the Textview should give the result multipled by 0.87. For example when I put 100 in EditText and click Convert button it should give the result of 87. But when I click the Convert button the Textview gives the value of "android.arch.lifecycle.MutableLiveData@eb84a7b". And when I rotate the screen then the result becomes 87. Could you please have a look at my code and tell me where I should revise the code so that the result gives the number when I click Convert button? , Use getValue() instead of toString()

mTextView.setText(mViewModel.getResult().getValue());

seems to work fine I have a MutableLiveData and I want to add a List inside, but seems the below code doesn't work: , Make your variable like this:

private var factsLive: MutableLiveData<List<Fact>> = MutableLiveData<>()

it fixes the issue How could I convert MutableLiveData< String> to MutableLiveData< Int>. , You should use Transformations.map to get a intLiveData.

val intLiveData = Transformations.map(textLiveData) {
    try {
        it.toInt()
    } catch (e: NumberFormatException) {
        0
    }
}

intLiveData.observe(lifecycleOwner,  Observer{ intValue ->
    // get the int value.
})

this one helps. This is my ViewModel , You must init LiveData properties:

class ManualInputViewModel : ViewModel() {
    var username = MutableLiveData<String>()
    var password = MutableLiveData<String>()

    fun onClickLogin(view: View){
        view.context.toast(username.value)
    }
 }