How to change UIView size?

Question

I need to update UIView size.

Now i use

var titleSize = CGRectMake(0, 30, 40 , 1000)

self.contentCoverScrollView.frame = titleSize

in viewDidLoad, but nothing happens.

Answer 1

In Autolayout if you want to change the frame then try the constraints ( IBOutlet of NSLayoutConstraint ).

Set the constraint outlets and change constant value by :

self.sampleConstraint.constant = 20
self.view.layoutIfNeeded()

Answer 2

I thought you had used the AutoLayout in your application that's why it can not change the view frame, please write the below code.

var titleSize = CGRectMake(0, 30, 40 , 1000)

self.contentCoverScrollView.frame = titleSize

[self.contentCoverScrollView updateConstraintsIfNeeded];

Note : updateConstraintsIfNeeded will tell the system to recalculate the constraints in that particular moment of execution.

Answer 3

看起来您想更改ScrollView的大小使用：

[self.contentCoverScrollView setContentSize:(CGSizeMake(40, 1000))];