如何使用 StoryBoard 在 Xcode 中设置约束？

Question

I am trying to set constraints in iphone devices using storyboard in xcode. But i am getting some issue.I have placed two textfields and two buttons using drag and drop.Everything is going fine except one button whose width get reduced in iphone 5s and i don't know the reason behind this.Can anybody help?

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Answer 1

Vandana, if the button width is reduced, it simply means that it does not have a fix width. You have 2 options

1) Set a width constraint on the button (eg I want it to be 300 points long)

2) Set a leading and trailing constraint (eg on the left I want a fix 10 points distance from the bezel, and on the right I want a fix 10 points distance from the bezel.

I believe there's a warning in the storyboard, you just need to select the best option for you:

Ways to add a width constraint:

1) Option + click and hold "the button" 2) drag to the left or right on storyboard and release while it's on the button:

Answer 2

Some practical solutions:

• add a "width" constraint for that button ( it can be >= also )

• adde "equal widths" constraint for that button and another element

• adde "trailing and leading" constraint for that button

also

• try with different size classes to see your result.

It would also help your question to add more info on how your constraints are setup.