UIButton added as subview is away from UIView

Question

Tried and searched a lot. Button added as subview is away from view when the frame of superview is small. I dont want it to be appear when frame is small.

 UIView *vw = [[UIView alloc] initWithFrame:CGRectMake(20 , 100, 200, 30)];
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
    [btn setTitle:@"OK" forState:UIControlStateNormal];
    [btn setFrame:CGRectMake(20 , 100, 30, 20)];
    [vw sendSubviewToBack:btn];
    [vw addSubview:btn];
    [vw setBackgroundColor:[UIColor redColor]];
    [self.view addSubview:vw];

this is my code. It look like this

enter image description here

you know the bounds of the superview. test on that to whether you place the button. — Warren Burton, Mar 13 '14 at 12:13
Check First View Hierarchy of UIButton.......It Change in iOS 7 — Parvendra Singh, Mar 13 '14 at 12:19
Check this http://stackoverflow.com/questions/5423185/uiview-hide-children-views-when-out-of-bounds You have to clip the subviews — svrushal, Mar 13 '14 at 12:23
Button's frame should have y origin 0. You have to add the btw and then manipulate it. [vw addSubview:btn]; [vw sendSubviewToBack:btn]; — Praveen Matanam, Mar 13 '14 at 12:23

score 2 · Answer 1 · answered Mar 13 '14 at 12:25

2

Look on the frame of the UIButton. Its origin.y is 100px. It should be 0, if you want to add it to the vw.

answered Mar 13 '14 at 12:25

Krivoblotsky

1,492
11
17

score 1 · Accepted Answer · answered Mar 13 '14 at 12:22

You did wrong. Before adding btn to view, you've called sendSubviewToBack:. Just rewrite as below.

[vw addSubview:btn];//First
[self.view addSubview:vw];//second
[vw sendSubviewToBack:btn];//Third

You don't want to appear if it's lie outside superview, use this. vw.clipsToBounds = YES

UIButton added as subview is away from UIView

2 Answers2