BlockingGet block UI thread RxJava 2

Question

I am dealing with the problem.

I am trying to call RxJava in the sync manner, however doing that results in blocking the Main thread.

Here is my code

Answer 1

.observeOn(AndroidSchedulers.mainThread())
.blockingGet();

The problem exists in this specific combination of operators. AndroidSchedulers schedules code to run on the main thread, however the blockingGet() stops more code from executing on that thread. Simply put AndroidSchedulers and the blocking operators of RxJava do not work well together.

Since the android scheduler might be used in the construction of the observable this means any use of the blocking* operators on the main thread will be prone to deadlocks regardless of what you try to do.