Android: Listening for variable changes

Question

I\'ve been searching for a KISS example of how to do this, and while they all seem (and I\'ve gone through them ALL!) simple enough, I still cannot get my head around the co

Answer 1

There is a much easier solution now. Just wrap your variable in a LiveData Specifically MutableLiveData.

Java Version

MutableLiveData listen = new MutableLiveData<>();

listen.setValue("Changed value"); //Initilize with a value

listen.observe(context, new Observer  > () {
    @Override
    public void onChanged(String changedValue) {
        //Do something with the changed value
    }
});

Kotlin Version

val listen : MutableLiveData =  MutableLiveData<>()

listen.setValue("Changed value") //Initilize with a value

listen.observe(context, Observer {

    //Do something with the changed value -> it

})