How to access the buttons on the tag from another class in iOS?

Question

I have a button:

- (UIButton *)subwayABBtn
{
    if (!_subwayABBtn)
    {
        _subwayABBtn = [UIButton buttonWithType:UIButtonTypeCustom];

        _subwayABBtn.tag = ADRESS_SUBWAY_BTN_TAG;

        [_subwayABBtn setTitle:@"Метро" forState:UIControlStateNormal];
        [_subwayABBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

        [self.contentView addSubview:_subwayABBtn];
    }

    return _subwayABBtn;
}

How can I change the title of the button with a tag from another class? I need to change the title of the button.

what is "another class" you normally use `viewWithTag:` – Bryan Chen Feb 15 '13 at 13:07 — Bryan Chen, Feb 15 '13 at 13:07

score 1 · Answer 1 · answered Feb 15 '13 at 13:17

I didnt get what you meant by another class. If its from your view where button is added, then you can use the below code to get UIButton

UIButton *btn = (UIButton *)[self.contentView viewWithTag:ADRESS_SUBWAY_BTN_TAG];
[btn setTitle:@"New title" forState:UIControlStateNormal];

score 1 · Answer 2 · edited May 23 '17 at 10:24

1

use delegates and @protocol to access parent view controller in ios refer tis simple example

link1

edited May 23 '17 at 10:24

Community

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1

answered Feb 15 '13 at 13:18

NANNAV

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Yuliani Noriega · Accepted Answer · 2013-02-15T13:41:27.933

1

You would need a reference to the other class in your view controller, declare the button in its header file and use the method -viewWithTage:

Example:

OtherClass *otherClass; // This should be set from previous class and a property in your current class 
UIButton *buttonFromOtherClass = [otherClass viewWithTag:BUTTON_TAG]; 
[buttonFromOtherClass setTitle:@"Метро" forState:UIControlStateNormal];

edited Feb 15 '13 at 13:41

answered Feb 15 '13 at 13:28

Yuliani Noriega

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How to access the buttons on the tag from another class in iOS?

3 Answers3