In this tutorial, we are going to create a sample application, where we are going to practice a bit the RelativeLayout and we will make a password checker app.
The layout will be very fancy, it will follow the nowdays valid design patterns and it will use dark colors. For this we are going to use very few type of user interface elements, eg TextViews, EditTexts.
The new view will the CardView. Since Android 7.0, we can use CardView, which has many cool features. You can create with it rounded corners and shadows based on its elevation. CardView is part of the AndroidX library.