ios7-为什么我开始输入时UITextView垂直居中

Question

I set the autolayout to greater than or equal than 75. I seems to be okay when the it loads, but when I start typing on the uitextview, it shrinks in height (1 line) and is centered vertically. Note that I have a vertical space constraint from the label to the uitextview (box) .

Picture 1:

Picture 2:

Hope someone can help me.

Answer 1

Remove that constraint and set the contraints to the fixed height you want. Guessing it is somewhere around 100pts