Multiple Choice Quiz App with SQLite Integration Part 7 - COUNTDOWN TIMER - Android Studio Tutorial

In part 7 of the SQLite quiz tutorial, we finally implement the countdown. For this we will use the CountDownTimer class, pass it a running time in milliseconds and an intervall how often it's onTick method will be called and then we update our TextView with each tick. We will convert our milliseconds to minutes and seconds and then format this time into a string using the String.format method. We will also change the text color of our countdown text if it runs below 10 seconds with the setTextColor method and when the timer runs up, it's onFinish method will be called where we check for the answer. We also override onDestroy to cancel our CountDownTimer there when our activity finishes.

Watch the whole playlist:
https://www.youtube.com/playlist?list=PLrnPJCHvNZuDCyg4Usq2gHMzz6_CiyQO7

Example code for this part:
https://gist.github.com/codinginflow/7797cb7de23747f15c07f32653177dc1

Stackoverflow answer about CountDownTimer:
https://stackoverflow.com/questions/6810416/android-countdowntimer-shows-1-for-two-seconds

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