CODEWITHSUNDEEP
iphoneobjective-cxcodeuiscrollviewscroll
Henrik LP
Henrik LP

Reputation: 159

Why does my UIScrollView not work?

I have placed a UIScrollView in a ViewController in IB and gave the view the tag:1. In viewDidLoad:, I have this code:

UIScrollView *scrollView = (id)[self.view viewWithTag:1];

scrollView.backgroundColor = [UIColor clearColor];
scrollView.opaque = NO;

[scrollView setScrollEnabled:YES];
[scrollView setContentSize:CGSizeMake(320, 800)];

I have a slider and a label in the ScrollView just to see if it scrolls, but it doesn't scroll at all. I get to change the backgroundColor to for example yellowColor, but it doesn't scroll. Is there a method or action i have to add? Please help! :)

Upvotes: 1

Views: 488

Answers (5)

maelswarm
maelswarm

Reputation: 1070

I had the same problem not long ago, but this did the trick.

Use -(void)viewDidAppear:(BOOL)animated { ... }

-(void)viewDidAppear:(BOOL)animated  {

    [super viewDidAppear:YES];

    scrollView.backgroundColor = [UIColor clearColor];

    scrollView.opaque = NO;

    [scrollView setScrollEnabled:YES];

    [scrollView setContentSize:CGSizeMake(320, 800)];

    [super viewDidLoad];
}

Also declare the UIScrollView in your header

@property (retain, nonatomic) IBOutlet UIScrollView *scrollView;

Upvotes: 2

Nirav Gadhiya
Nirav Gadhiya

Reputation: 6342

try to add this code in viewWillAppear 

UIScrollView *scrollView = (UIScrollView *)[self.view viewWithTag:1];
scrollView.frame=CGRectMake(0, 0, 320, 400);
scrollView.backgroundColor = [UIColor clearColor];
[scrollView setScrollEnabled:YES];
[scrollView setContentSize:CGSizeMake(320, 800)]; 
[scrollView setUserInteractionEnabled:YES];

hope will help you

Upvotes: 0

Ganesh G
Ganesh G

Reputation: 2061

Try Like this 

UIScrollView *scrollView = (id)[self.view viewWithTag:1];
scrollView.frame=CGRectMake(0, 0, 320, 460);
[self.view addSubview:scrollView];
scrollView.backgroundColor = [UIColor clearColor];
scrollView.opaque = NO;
[scrollView setScrollEnabled:YES];
[scrollView setContentSize:CGSizeMake(320, 800)];

because when the scroll view height cross the current view height then only its get scrollable.

Upvotes: 2

Paras Joshi
Paras Joshi

Reputation: 20541

here may be its problem with set TopBar of UIView with UINavigationBar from xib and also BottomBar of that... Here from XIB first select main UIView after click on Attribute Inspector after in Simulated metrics set NavigationBar as a TopBar and after set frame of UIScrollView in XIB.

try with bellow code it will worked ..

[scrollView setContentSize:CGSizeMake(320, 844)];

Upvotes: 0

Mev
Mev

Reputation: 1625

scrollView.backgroundColor = [UIColor clearColor];

change this to something bright like red or green for testing.

UIScrollView *scrollView = (id)[self.view viewWithTag:1];
scrollView.backgroundColor = [UIColor clearColor];

also make sure your scrollview isnt nil (after obtaining from [self.view viewWithtag:1]. otherwise the code seems OK

EDIT

select scroll view in interface builder > go to attributes editor > tick scrolling enabled

enable scrolling

Upvotes: 0

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