Android Studio Preview is different from the real device

Question

I have installed an AVD for my Samsung Galaxy S7 Edge. When I look to a layout at the android studio preview it fits the screen perfect. But it looks different on the real phone.

Device resolution is also at 2560x1440

What is the problem?

Screen settings AVD:

Preview settings Android Studio:

Screenshot Phone:

Answer 1

You are using a RelativeLayout with too many Views to fit the screen. Either you want to use ConstraintLayout to set the Views in a direct relation to each other or you put a ScrollView around your root layout. Either case there is only so much space to fill.