How to fix the location of an object on the screen in Android Studio?

Question

Android

There are elements in Android Studio, during the preview, I set them as they should. But when poured onto the device, they all shift to the very top. Specifically, these are textView and textClock. How to fix their location?

Answer 1

Let me guess, you're using a ConstraintLayout and just throwing elements on it without specifying any constraints?
If yes, then look here:
ConstraintLayout