如何在rxJava2中传达自定义任务和另一个类？

Question

I create a task in class (A) and call asynchronously then if the task is finished or canceled pass the result another class(B) with using in rxJava2 .I am very new in rxJava2 and I confused.What can I use this logic? Completable or Flowable?

What I want to do

call asynchronously task class (B) run task and emit some result class(A) then subscribe the task result in class(B) Any idea ? Thanks for your suggestion

Answer 1

So you have some task A and B exposed as streams, ex. Single<TaskAResult> and Single<TaskBResult> . Use flatMap to subscribe to task B after task A emits result.

taskA.flatMap(taskAResult -> taskB(taskAResult))
        .subscribe(taskBResult -> {
            // do whatever after task B finishes
        });

And you have a method Single<TaskBResult> taskB(TaskAResult result) which will create Task B based on Task A result.