Android - loop part of the code every 5 seconds

Question

I would like to start repeating two lines of code every 5 seconds when I press the button START and end it, when I press the button STOP. I was trynig with a TimerTask and H

Answer 1

I don't have much more to add, other than to mention the differences between using Handler, CountDownTimer, and regular Timer. As britzl mentioned, the CountDownTimer uses a Handler internally, so that is equivalent to using the handler directly. A handler is used for running Ui stuff, for very short periods of time. An example would be setText for a text view. For computationally intensive tasks, handlers may cause a lag. A timer also can only run short tasks, but it is not necessarily only for UI stuff. For more complicated tasks, a new Thread should be used.