How to bind method on RadioGroup on checkChanged event with data-binding

Question

I was searching over the internet for how to perform the new cool android data-binding over the RadioGroup and I didn\'t find a single blog post about it.

Answer 1

After some hours I found easy way: two-way databinding in android. It's base skeleton with livedata and Kotlin. Also you can use ObservableField()

1. Set your viewmodel to data
2. Create your radiogroup with buttons as you like. Important: set all radio buttons id !!!
3. Set in your radio group two-way binding to checked variable (use viewmodel variable)
4. Enjoy)

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layout.xml

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class YourViewModel(): ViewModel {

var radio_checked = MutableLiveData()


init{
    radio_checked.postValue(R.id.your_id1)//def value
}

//other code
}