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Set UIView's autoresizing mask programmatically?

I have to set autoresizingMask programmatically for UIView.

I don't know how to implement this.

enter image description here

like image 923
Hiren Avatar asked Oct 02 '12 17:10

Hiren


4 Answers

To achieve what you have in that screen shot you need to do the opposite of what DrummerB suggests. You want a fixed top margin so you make every other side flexible like so:

Objective C:

view.autoresizingMask = UIViewAutoresizingFlexibleRightMargin |
                        UIViewAutoresizingFlexibleLeftMargin |
                        UIViewAutoresizingFlexibleBottomMargin;

Not setting a side as flexible means that it will be fixed (default behaviour), thats why there is no such thing as UIViewAutoResizingFixedTopMargin (since its the same as not setting UIViewAutoresizingFlexibleTopMargin)

Edit for Swift:

view.autoresizingMask = [.FlexibleRightMargin, .FlexibleLeftMargin, .FlexibleBottomMargin]

Credit to Tom Calmon for adding the swift version 1st.

Swift 5.0 update:

view.autoresizingMask = [.flexibleRightMargin, .flexibleLeftMargin, .flexibleBottomMargin]

Cheers.

like image 110
pnizzle Avatar answered Nov 10 '22 18:11

pnizzle


You have to set the view's autoresizingMask property:

view.autoresizingMask = UIViewAutoresizingFlexibleTopMargin;

The possible values are defined in UIViewAutoresizing:

enum {
   UIViewAutoresizingNone                 = 0,
   UIViewAutoresizingFlexibleLeftMargin   = 1 << 0,
   UIViewAutoresizingFlexibleWidth        = 1 << 1,
   UIViewAutoresizingFlexibleRightMargin  = 1 << 2,
   UIViewAutoresizingFlexibleTopMargin    = 1 << 3,
   UIViewAutoresizingFlexibleHeight       = 1 << 4,
   UIViewAutoresizingFlexibleBottomMargin = 1 << 5
};
typedef NSUInteger UIViewAutoresizing;

You can set multiple values with the bitwise OR operator |.

like image 24
DrummerB Avatar answered Nov 10 '22 18:11

DrummerB


Swift 2.0:

view.autoresizingMask = [.FlexibleRightMargin, .FlexibleLeftMargin, .FlexibleBottomMargin]
like image 22
Thomás Pereira Avatar answered Nov 10 '22 18:11

Thomás Pereira


Swift 4.1:

view.autoresizingMask = [.flexibleHeight, .flexibleWidth, .flexibleTopMargin, .flexibleRightMargin, .flexibleLeftMargin, .flexibleBottomMargin]
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Jimmy_m Avatar answered Nov 10 '22 18:11

Jimmy_m