CODEWITHSUNDEEP
iosobjective-cuiscrollviewcontentsize
Mord Fustang
Mord Fustang

Reputation: 1553

UIScrollview is not scrolling

I know there are tens of similar question about scrollview but I have tried everything, Scrollview is not scrolling.

First I created a uiviewcontroller with a xib file, and set it to freeform and arrange the size of it and added a scrollview on view.

enter image description here

Then added it as a childviewcontroller to another view controller. 

-(void)scrollViewSetup
{
    if (!_scrollView) {
        _scrollView=[[UIView alloc] initWithFrame:CGRectMake(0,200,self.scrollView.frame.size.width,200)];
        [self.view addSubview:_scrollView];

        ScrollView *displayPortf=[[ScrollView alloc] init];
        //add as a child view controller here
        //displayPortf.delegate=(id)self;
        [_scrollView addSubview:displayPortf.view];
        [displayPortf didMoveToParentViewController:self];
        [self addChildViewController:displayPortf];
    }
}

Content size of scroll view is (768,200) on iPad. I tried setting content size to (1920,200) in viewDidLoad didn't work then viewDidAppear didn't work then viewDidLayoutSubviews didn't work.

Then I checked the use auto layout box and tried to add constants by goingeditor->resolve auto layout issues->add constraints

How can I make scrollview to scroll?

Note: Parent view uses auto layout and storyboard.

Upvotes: 0

Views: 98

Answers (1)

Vlad Papko
Vlad Papko

Reputation: 13312

I guess that the reason of issue is zero width of scrollView.
When you call this: 

_scrollView=[[UIView alloc] initWithFrame:CGRectMake(0,200,self.scrollView.frame.size.width,200)];

_scrollView is initiated with width self.scrollView.frame.size.width, but at this moment self.scrollView is nil as it related to instance variable _scrollView that hasn't initiated yet.

Try to set some non zero float value for view width:
_scrollView=[[UIView alloc] initWithFrame:CGRectMake(0,200,768,200)];

Upvotes: 1

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