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Editorial Team
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Asked: 2026-05-28T04:07:45+00:00

UIButton * test=[[UIButton alloc] initWithFrame:CGRectMake(30, 30, 49, 49)]; test.buttonType= UIButtonTypeCustom; -> assinging to property

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UIButton * test=[[UIButton alloc] initWithFrame:CGRectMake(30, 30, 49, 49)];

test.buttonType= UIButtonTypeCustom;

-> assinging to property with ‘readonly’ **attribute not a allow

why? how??

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1 Answer

  1. Editorial Team

    You should use the class method

    + buttonWithType:

    to create the button. After that, set the frame.

    From the UIButton Class Reference:

    buttonType

    The button type. (read-only)

    @property(nonatomic, readonly) UIButtonType buttonType

    This means that you cannot change the buttonType once the button as been created.

    For example, you can do

    UIButton *test = [UIButton buttonWithType:UIButtonTypeCustom];
test.frame = CGRectMake(30, 30, 49, 49);
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