如何将数据从 ViewModel 内的线程发送到主 Activity/Fragment？

Question

Is there a way to send data from a thread inside a ViewModel to the main Activity/Fragment?

I'm building an app for financial chart and I'm taking data from an API, so in order to do that I need to put the API call in a thread. Apart from that I do some more calculations in order to represent the chart so I figured using a ViewModel.

Answer 1

You can update such LiveData ( MutableLiveData or MediatorLiveData ) values from a sub-thread by postValue method rather than setValue method.

And from Activity/Fragment, you can observe the LiveData of your ViewModel in general ways.