ReactiveX/RxJava

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Christian Vivas Santiago

@christian130

this
```

 @Override
            public synchronized void onNext(Task task) {
                //progressBar.setProgress(progress);
                int n = counter.incrementAndGet();
                float g = (((float) n / 5) * 100);


                Log.d("OnNext", "called from OnNext()" + Thread.currentThread().getName());
                Log.d("Counting", "this is what i've counted" + Integer.toString(n));
                Log.d("percentage", "this is the percentage" + Integer.toString((int) g));
                progressBar.setProgress((int) g);
                textView.setText("" + (int) g + "%");


                Log.d("OnNext: ", "called from OnNext() with a POJO Task named task" + task.getDescription());


            }

in the last item is never called

i mean is called the Logger... but the components textView and progressBar are not called

are not changed... for that last item in particular...

Christian Vivas Santiago

@christian130

the list is simple as List<Task> mylist= new ArrayList<Task>();

something like that...

Ignacio Baca Moreno-Torres

@ibaca

if the logger is called, then this is not a Rx problem

Christian Vivas Santiago

@christian130

@ibaca the logger is calling... but the textView and the progressBar controllers does not change

you call pull the entirely project in my github

the last one

i've just uploaded it...

@ibaca this one https://github.com/christian130/ReactProgramming/tree/lesson02

you can git clone that

and then open it with android studio

but you can surf the entire project

Ignacio Baca Moreno-Torres

@ibaca

but you have rx or android doubts? bc this is a rx group :grimacing:

if your are learing rx, just create a simple test case or a main

Christian Vivas Santiago

@christian130

@ibaca i'm just doing the codingwithmitch course... and i just mixed what i know with the actual Rx

Ignacio Baca Moreno-Torres

@ibaca

so you say that Log.d("Counting", "this is what i've counted" + Integer.toString(n)); gets executed correctly?

but progressBar.setProgress((int) g); doesn’t update the progressBar?

Christian Vivas Santiago

@christian130

@ibaca yes

the progressBar does not update in the last item

of the simple list

the list is a simple generic list containg a POJO

with the name of Task

and implements an ArrayList normal... simple...

but i cannot figure out why in the last item it passes from onNext directly to onComplete without making the change in the UI for 60 percentage

so you say that Log.d("Counting", "this is what i've counted" + Integer.toString(n)); gets executed correctly? @ibaca yes

but progressBar.setProgress((int) g); doesn’t update the progressBar? @ibaca yes

Ignacio Baca Moreno-Torres

@ibaca

what do you see in the textView?

Christian Vivas Santiago

@christian130

@ibaca i see the percentage

Ignacio Baca Moreno-Torres

@ibaca

what percentage?

Christian Vivas Santiago

@christian130

@ibaca for building the progress bar

in order to setProgress

Ignacio Baca Moreno-Torres

@ibaca

the number, what number do you see at the end?

Christian Vivas Santiago

@christian130

progressBar.setProgress()

in this case i see in the logcat 60 percentage

which is good

Ignacio Baca Moreno-Torres

@ibaca

uhm, no idea, it really looks like everithing works as expected… if you really think progressBar is not updating then you better ask in a android group :wink:

Christian Vivas Santiago

@christian130

it calculates given five items... and then it converts it to percentage due to the division of that number... all depends on if i give it isComplete true or false... but is always gives you the division by 5 because there are five items... if i go to DataSource file and then i changed to true the isComplete constructor... then it should be 20,40,60,80,100 and so on...

@ibaca no.. but i've just changed the size of the list to two... and the last one is not updating...

i think it have to be something with the Rx implementation

and i'm sure of it..

i think i'll have to skip this issue until i figure this out in the future... Rx is a total unknown universe and pretty they are

but i dont know why it shows in the logger and not updating the UI

and i forces it to run in the ui by RunUiThread

but is already running in the ui thread

this

.observeOn(AndroidSchedulers.mainThread());

it's executing the subscriber in the main

Christian Vivas Santiago

@christian130

I figured out to use Rx and also the ProgressBar across with the textView using an iteration technique with the manual create "Observable"... in this https://github.com/christian130/ReactProgramming/tree/lesson03

Where communities thrive

People

Repo info

Activity