Well, I will quickly answer your questions and want to apologize if it isn't easy to follow me but in fact I'm not mother ****** english, so it is a bit difficult to explain for me, too.
button1 and label1 are embedded in view2
✓ That's right
What is the container ? view2 ?
View2
Where and how do you do this ? In IB, there is no Yes, you just select the option wich gets a tick mark
I used this to describe activating the checkbox (tick mark)
That's equivalent to what you get with control-drag
Yes, it's the same what I described above (checkbox)
Well, now the problem:
Forgot about the different iPhone models! The problem is on all iPhones the same.
View2 is always not in the middle of the screen (horizontally as well as vertically).
Means: It is moved to direction right and bottom on the screen and also out of the screen.
So, that was my problem in original. I tried a few things and want to explain to you what now happend.
I draged out from view2 to view1 bottom and select Bottom Space to Save Area. I did the same with the right (it should also be center horizontal) and select Trailing Space to Save Area.
Now all constraints are displayed blue. I hope that's a positive sign.
But view2 is not in the middle of the screen.
Now the distance from the right side and the side bottom is a bit larger as the right and top side.
(Apart from iPhone SE, there is left and top side a bit larger)
Maybe it's the problem that I have set no specif constrains for button1 and label1 to set the distance to view2?
Or it is distract from other labels and buttons on the screen?
Here are the constrains concerning view2:
Safe Area.bottom = View.bottom + 208
Safe Area.trailing = View.trailing + 55
View.centerX = Safe Area.centerX
View.centerY = Safe Area.centerY
All I want is a view in the middle of the screen on every iPhone model!
Thank you very much for your support!