Add custom view as a view of XML layout

Question

The scenario is the following:

I have an activity RunTrainingWorkoutsView that uses XML layout _run_workout.xml_ with some labels that are updated by Co

Answer 1

I got it after 3 days of banging my head against the wall and by googling, stacOverflowing etc.

Actually, it was this stupid little thing...

My XML file where I defined the layout containing some usual android views (textView and buttons namely) and my custom view CounterClockView I had:

where I had to have added one more line!

I have no idea why this namespace line made such a huge difference, but it works great!

Now, I can update my custom view from my main activity on every onTick() of CountDownTimer()...

The following answer was very helpful: findViewById() returns null for custom component in layout XML, not for other components