问题
What effect does First Baseline and Last Baseline properties on the subviews of a UIStackView?
In fact, what does these property mean?
回答1:
Suppose you have a two-line text view (or field or label or button) and a three-line text view, and you add them to a horizontal stack view. Do you want to align their first lines, or their last lines? That's the difference.
.FirstBaseline:
.LastBaseline:
Note: I increased the vertical content hugging and compression resistance priorities to 1000 (required) to get this to work properly.
来源：https://stackoverflow.com/questions/33932846/first-baseline-and-last-baseline-properties-in-uistackview