Why is UIScrollView leaving space on top and does not scroll to the bottom

Question

I am new to objective-C programming.

I am using UIScrollView with some labels, image and text view on it.

I have turned off Autolayout and already tried with "Adjust scroll View Insets" on (situation described in title) and off (doesn't scroll).

This is what I insert into viewDidLoad:

    [scroller setScrollEnabled:YES];
[scroller setContentSize:CGSizeMake(320, 687)];

But I must be missing something very simple.

Directed

Try with large number in contentSize like CGSizeMake(320, 1687) – Giraud

It works. Thx. But I still have some empty space on top. – Directed

Uncheck Under Top Bars on your controller – Ornate

Answer 1

1... Why is UIScrollView leaving space on top

With Storyboard- Goto view controller > Attribute Inspector > Uncheck Adjust Scroll View Insets property

With Code- For extra space set viewController property automaticallyAdjustsScrollViewInsets to NO, by default it is YES.

self.automaticallyAdjustsScrollViewInsets = false; 
scroller.contentInset = UIEdgeInsetsZero;
scroller.scrollIndicatorInsets = UIEdgeInsetsZero;
scroller.contentOffset = CGPointMake(0.0, 0.0);

2... does not scroll to the bottom

To make it scroll try with large number in contentSize like CGSizeMake(320, 1687). If it works that means you are not setting the contentSize large enough to have all its content.

Giraud

Answer 2

Just select your view controller and set shown option to false (uncheck)

Kokura

Answer 3

iOS 11 && 12

if #available(iOS 11.0, *) {
    scrollView.contentInsetAdjustmentBehavior = .never
} else {
    automaticallyAdjustsScrollViewInsets = false
}

Nolasco

iOS 12: scrollView.contentInsetAdjustmentBehavior = .never – Intramural

Answer 4

iOS 11

In my case only changing this UIScrollView Content Insets property in IB from Automatic to Never helped.

Fayina

Thanks, I was going crazy on this problem, this is the only thing I've missed! – Conservatory

Answer 5

Swift 3.0

self.automaticallyAdjustsScrollViewInsets = false

scrollView.contentInset = UIEdgeInsets.zero

scrollView.scrollIndicatorInsets = UIEdgeInsets.zero;     

Germinate

Answer 6

Actually, the margin has nothing to do with ScrollViewInsets or contentOffset. It's just a conflict between SuperView.Top and SafeArea.Top pinning, happens when you pin the UIScrollView to top, bottom, left and right.

This is the right way to cover the top margin.

1) Pin all the four sides.

2) Select the top constraint > Change Second Item to Superview.Top

3) Then the last step is to change the Constant to 0 (Zero).

You might want to check this too: https://github.com/29satnam/MoveTextFieldWhenKeyboardAppearsSwift

Cortege

Answer 7

I did below, my problem solved

changing UIScrollView Content Insets property in from Automatic to Never and Adding below code in viewDidLoad()

scroller.contentInset = UIEdgeInsetsZero;
scroller.scrollIndicatorInsets = UIEdgeInsetsZero;
scroller.contentOffset = CGPointMake(0.0, 0.0);`

Myramyrah

Answer 8

On iPhoneX this will also occur due to some non-sense safe area stuff that auto-layout tried to account for. Fix (for iPhoneX) with this:

if (@available(iOS 11.0, *)) {
    scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}

Discussant

Answer 9

In your view .m file, use this code to fix this problem

-(void)layoutSubviews{
    // To fix iOS8 bug of scrollView autolayout
    if([[[[[UIDevice currentDevice]systemVersion] componentsSeparatedByString:@"."]objectAtIndex:0] integerValue] == 8){
        [self.tableView setContentInset:UIEdgeInsetsMake(0, 0, 0, 0)];
    }
}

Triserial

Answer 10

Swift 3.0

self.automaticallyAdjustsScrollViewInsets = false

scrollView.contentInset = UIEdgeInsets.zero

scrollView.scrollIndicatorInsets = UIEdgeInsets.zero;    

scrollView.contentOffset = CGPoint(x: 0.0, y: 0.0);

Vestavestal

Answer 11

Swift 3 (Auto Layout)

1. Change "Layout Margins" to explicit
2. Set margins to your needs

Bullard

Answer 12

This works for me,

_scrollView.scrollIndicatorInsets = UIEdgeInsetsZero;
_scrollView.contentOffset = CGPointMake(0.0, 0.0);
[_scrollView setContentSize:CGSizeMake(self.view.frame.size.width, self.view.frame.size.height)];

Ghostwrite

Answer 13

After user interface orientation going to landscape, my UIScrollView shown its UIScrollIndicator being misplaced. To fix this, you need to add the following code.

As per iOS 13, yet supporting iOS 12 and earlier:

    // Fixes the scroll indicator misplacement when rotated in landscape
    if #available(iOS 13.0, *) {
        v.automaticallyAdjustsScrollIndicatorInsets = false
    } else {
        // Fallback on earlier versions
        v.contentInsetAdjustmentBehavior = .never
    }

    v.contentInset = .zero
    v.scrollIndicatorInsets = .zero

Teryl