using NSAutolayout concept how to display button all versions at same place in ios

Question

Hi i am creating button programatically. And i am working some app in ios6&ios7 4-inches screen and 3.5 inches screen. I need to display the button for all versions at same position.

So i want to use Auto layout concept for this.i know how to create button programatically, but I have no idea about how to apply auto layout concept for button. This is my code:

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

[button addTarget:self action:@selector(aMethod:)
 forControlEvents:UIControlEventTouchUpInside];

[button setTitle:@"Show View" forState:UIControlStateNormal];

button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);

[view addSubview:button];

score 2 · Accepted Answer · edited May 23 '17 at 11:49

Try this,

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [button addTarget:self action:@selector(aMethod:) forControlEvents:UIControlEventTouchUpInside];

    [button setTitle:@"Show View" forState:UIControlStateNormal];

    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10);

    [self.view addConstraints:@[

                                //view1 constraints
                                [NSLayoutConstraint constraintWithItem:button
                                                             attribute:NSLayoutAttributeTop
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:self.view
                                                             attribute:NSLayoutAttributeTop
                                                            multiplier:1.0
                                                              constant:padding.top],

                                [NSLayoutConstraint constraintWithItem:button
                                                             attribute:NSLayoutAttributeLeft
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:self.view
                                                             attribute:NSLayoutAttributeLeft
                                                            multiplier:1.0
                                                              constant:padding.left],

                                [NSLayoutConstraint constraintWithItem:button
                                                             attribute:NSLayoutAttributeBottom
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:self.view
                                                             attribute:NSLayoutAttributeBottom
                                                            multiplier:1.0
                                                              constant:-padding.bottom],

                                [NSLayoutConstraint constraintWithItem:button
                                                             attribute:NSLayoutAttributeRight
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:self.view
                                                             attribute:NSLayoutAttributeRight
                                                            multiplier:1
                                                              constant:-padding.right],

                                ]];

    [self.view addSubview:button];

Update:

button.autoresizingMask = (UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin);

Ref.Link: Autoresizing masks programmatically vs Interface Builder / xib / nib

thanks for your response.If i create another button same procedure is going on? — Surya, Apr 17 '14 at 11:40
bro it is working fine bro.But u are again updated answer na?so which one can i use it.And another question is if i create another button same procedure i will follow? — Surya, Apr 17 '14 at 12:13
check both answer, use which one is perfect to u. And, you have to use this for all — Ramdhas, Apr 17 '14 at 12:15
but for second you have to use suitable autoresizingmask, pls check attached link , you ll know — Ramdhas, Apr 17 '14 at 12:19
If your question got satisfied answer, please upvote and accept. — Ramdhas, Apr 17 '14 at 12:23

score 0 · Answer 2 · answered Apr 17 '14 at 11:32

0

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answered Apr 17 '14 at 11:32

warriorg

86
1
5

using NSAutolayout concept how to display button all versions at same place in ios

2 Answers2