An example for adding Activities to an Android app
Click this link for Part 1 of the tutorial: https://www.codingfanatic.com/2019/09/02/how-to-add-an-activity-43-100-days-of-code/
Click this link for Part 2 of the tutorial: https://www.codingfanatic.com/2019/09/09/clicking-to-start-activities-44-100-days-of-code/
Click this link for Part 3 of the tutorial: https://www.codingfanatic.com/2019/09/16/the-activity-stack-45-100-days-of-code/
Click this link for Part 4 of the tutorial: https://www.codingfanatic.com/2019/09/23/setting-a-parent-activity-46-100-days-of-code/
Click this link for Part 1 of 4 videos: https://youtu.be/lQUSOVZr63s
Click this link for Part 2 of 4 videos https://www.youtube.com/watch?v=2tY1Ssf8jnQ
Click this link for Part 3 of 4 videos https://www.youtube.com/watch?v=7Cnzk9X-JAE
Click this link for Part 4 of 4 videos https://www.youtube.com/watch?v=NfxPp2pk17Q&feature=youtu.be