I've UIViewController with navigation bar and scrollview within it.
When scrollview scrolls down I hide navigation bar and set bounds for scrollview to fit free space.
self.navigationController.navigationBarHidden = YES;
[scrollView setBounds:CGRectMake(0, 0, 320, 411)];
Height is 411 cos there is also UITabBarController.
But scrollview doesn't fit whole view. When I check it's frame it says that frame = (0 22; 320 411); How could I fix that?
I've tried to use setFrame function instead of setBounds. Also I dont need to resize it's content I need to change its frame.
i think you use setFrame and also setContentSize if needed here...
its may be happen because off its content size not manage after your scrollview bounds are changed...
hope this help you....
:)
I believe you need to set the frame of the scrollview.
scrollView.frame = CGRectMake(0, 0, 320, 411);
The bounds is a coordinate system in relation to the view and not its containing view.
Try to use setFrame function.
[scrollView setFrame:CGRectMake(0, 0, 320, 411)];
Related
I have a UIScrollView which is 208pt wide and 280pt tall that contains custom buttons that are 200pt wide and 280 pt tall with 8pt gaps between them. This scrollview has paging enabled but doesn't clip the subviews so that it always snaps to having one button centered but shows the other ones that go off screen. I am trying to make the field in which you can swipe through the buttons take up the full width of the screen, and I am trying to accomplish this with a secondary custom subclass of UIScrollView called PagingView which just has a UIScrollView property and passes all hits on it down to its scrollview. For whatever reason, though, when I try it without the paging view like this:
unsigned height = self.view.frame.size.height;
scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(60, height - 308, 208, 280)];
scrollView.pagingEnabled = true;
scrollView.clipsToBounds = false;
scrollView.showsHorizontalScrollIndicator = false;
[self.view addSubview:scrollView];
It works, albeit with the field I can interact with the scrollview limited to its frame. However, when I try it with the scrollview:
unsigned height = self.view.frame.size.height;
pagingView = [[PagingView alloc] initWithFrame:CGRectMake(0, height - 308, 320, 280)];
scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(60, height - 308, 208, 280)];
scrollView.pagingEnabled = true;
scrollView.clipsToBounds = false;
scrollView.showsHorizontalScrollIndicator = false;
pagingView.scrollView = scrollView;
[self.view addSubview:pagingView];
[self.view addSubview:scrollView];
It works, but I am able to swipe anywhere on the screen to move through the scrollview. How do I remedy this?
Not clear what you are doing here. You are adding two scroll views to self.view but actually you need only one.
The easiest way with least code is to use one plain UIScrollView, present your buttons as subviews of correctly sized UIViews (you need the gaps around the buttons), and enable paging for the scroll view. Done.
Please note that the measurements you describe do not work out. The scroll view width is 208, the button 200, so the wrapper view should have width 208 and the origin.x of the button should be 4. The scroll view height is 280, the button as well, so there is no vertical margin: wrapper height also 280, button origin.y is 0.
My UIScrollView is a ~4500px horizontal view that the user needs to scroll horizontally through to view the content.
I have set it up as follows:
- (void)viewDidLoad
{
[super viewDidLoad];
sview.frame = CGRectMake(0, 0, 568, 320);
sview.contentSize = CGSizeMake(4500, 320);
[sview setScrollEnabled:YES];
}
Yet the scroll view does nothing. Is there something obvious I missed? i've tried literally every tutorial on the web.
I got similar issue. I did following modifications and the scrollView started scrolling for me:
Select to check the 'Bounce Horizontally' property for UIScrollView
in xib.
Move the code following code to viewDidAppear instead of
viewDidLoad:
-(void) viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
sview.frame = CGRectMake(0, 0, 568, 320);
sview.contentSize = CGSizeMake(4500, 320);
[sview setScrollEnabled:YES];
}
I think this should help you.
I've explained it here, but there are so many answers to this problem that suggests turning off Auto Layout. That fixes the problem but that's not really the correct solution. Here's my answer:
Turning Auto Layout works, but that's not the solution. If you really need Auto Layout, then use it, if you don't need it, turn it off. But that is not the correct fix for this solution.
UIScrollView works differently with other views in Auto Layout. Here is Apple's release note on Auto Layout, I've copied the interesting bit:
Here are some notes regarding Auto Layout support for UIScrollView:
In general, Auto Layout considers the top, left, bottom, and right edges of a view to be the visible edges. That is, if you pin a view to
the left edge of its superview, you’re really pinning it to the
minimum x-value of the superview’s bounds. Changing the bounds origin
of the superview does not change the position of the view.
The UIScrollView class scrolls its content by changing the origin of its bounds. To make this work with Auto Layout, the top, left, bottom,
and right edges within a scroll view now mean the edges of its content
view.
The constraints on the subviews of the scroll view must result in a size to fill, which is then interpreted as the content size of the
scroll view. (This should not be confused with the
intrinsicContentSize method used for Auto Layout.) To size the scroll
view’s frame with Auto Layout, constraints must either be explicit
regarding the width and height of the scroll view, or the edges of the
scroll view must be tied to views outside of its subtree.
Note that you can make a subview of the scroll view appear to float (not scroll) over the other scrolling content by creating constraints
between the view and a view outside the scroll view’s subtree, such as
the scroll view’s superview.
Apple then goes on to show example of how to correctly use UIScrollView with Auto Layout.
As a general rule, one of the easiest fix is to create a constraint between the element to the bottom of the UIScrollView. So in the element that you want to be at the bottom of the UIScrollView, create this bottom space constraint:
Once again, if you do not want to use Auto Layout, then turn it off. You can then set the contentSize the usual way. But what you should understand is that this is an intended behaviour of Auto Layout.
First of all you have to add some content to UIScrollSiew as subview for scrolling,without content on UIScrollView how can you scroll?. Here is what i did,just add UIImageView to UIScrollView as subview of size same as size of UIScrollView...
In viewDidLoad method try the following code..
-(void)viewDidLoad
{
UIScrollView *scroll=[[UIScrollView alloc] init];
scroll.frame=CGRectMake(0, 0, 320, 460);
UIImageView *imageView=[[UIImageView alloc] init];
imageView.frame=CGRectMake(0, 0, 320,460);
imageView.image=[UIImage imageNamed:#"chiranjeevi.jpeg"];
scroll.contentSize = CGSizeMake(4500, 460);
[scroll setScrollEnabled:YES];
[scroll addSubview:imageView];
[self.view addSubview:scroll];
}
I tested this code it works well.I hope this code will be helpful to you..
I assume you are adding UISrollingView in your Xib file. This will work for you.
sview.delegate = self;
sview.backgroundColor=[UIColor clearColor];
[sview setCanCancelContentTouches:NO];
sview.indicatorStyle = UIScrollViewIndicatorStyleWhite;
sview.clipsToBounds = YES;
sview.scrollEnabled = YES;
sview.contentSize = CGSizeMake(320,570);
CGPoint topOffset = CGPointMake(0,0);
[sview setContentOffset:topOffset animated:YES];
Also, make sure to give IBOutlet connection in your Xib file.
I also faced the same issue.I added the scroll view in xib.I also added some subviews to this scroll view. The scroll view would stop scrolling after I added the subviews. The solution for this problem was in the xib for the view in file inspector Use Autolayout was checked. I unchecked it and the scroll view scrolled after adding the subviews.
The solution was uncheking the Use Autolayout in file inspector in xib.
Before you bash me for duplicate, please know that I have looked nearly every other method but none of them have helped. I have a long view in which I have a scroll view.
The view is 320 by 671. The scroll view has been linked to the outlet "scrollView" correctly.
The property "scrollView" has been properly declared and synthesised.
My code:
[scrollView setScrollEnabled: YES];
scrollView.contentSize = CGSizeMake(320, 671);
scrollView.clipsToBounds = YES;
scrollView.delegate = self; // I have adopted the delegate protocol in .h
So, my problem is that the view doesn't scroll, and the scroll bar doesn't even show up.
EDIT:
I resized the uiview to normal 320 by 460. I deleted the scroll view in xib and decided to add like this:
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame: CGRectMake(self.view.center.x, self.view.center.y, 320, 460)];
[scrollView setScrollEnabled: YES];
scrollView.contentSize = CGSizeMake(320, 671);
scrollView.clipsToBounds = YES; scrollView.delegate = self;
[self.view addSubview: scrollView];
OK, now what happens is when I scroll the screen, the bar comes up and I can scroll around to change the bar's position, but the actual view doesn't scroll
You need set the ContentSize of UIScrollView to the size of your CONTENT.
Do not set "ContentSize" to the size of the view. The "Content Size" should tell the size of the content within the scroll view.
Your scrollview should be 320x460 and your scrollview.contentsize should be 320x671.
You must layout your subviews "outside" of the view in IB.
EDIT:
Your layout should look like this:
http://ge.tt/api/1/files/4qGbz2N/2/blob/x675
The textview is placed outside the views frame but inside the scrollview. The scrollviews content size should be set accordingly to fit all subviews. In this case yValue should be 550 + 128
hello every buddy
i want to make horizontal image scroller at bottom view and in the back of side big Image View. i don't know how to make image horizontal scroll.
Place the image view inside a scroll view whose horizontal content size is greater than its frame width, i.e.
UIScrollView *scrollView = [[UIScrollView alloc] init];
scrollView.frame = CGRectMake(0, 0, 100, 100);
scrollView.contentSize = CGSizeMake(300, 100);
[scrollView addSubview:imageView];
You should use contentSize property of the UIScrollView to set its content size according to your requirement and then set the property showsHorizontalScrollIndicator to YES and showsVerticalScrollIndicator to NO . But you don't require to set these two if you set frame and content size properly. Like if _myScrollView.frame.height and _myScrollView.contentSize.height is same then you don't need to set horizontal and vertical scroll. Its vertical scroll will automatically be disabled.
you can use scroll view with page control for a horizontal slideshow. follow the tutorial it might help you
http://www.edumobile.org/iphone/iphone-programming-tutorials/pagecontrol-example-in-iphone/
I've got a scroll view, in which I have an imageview displaying a 960x960 image, but it scrolls to something close to 4x that. I've tried to log the widths of all possible views and everything claims that it's 960x960 (or smaller, I think I logged the screen width once...?)
I need this image to stop scrolling at the bottom right corner of the image rather than entering deadspace. Any help would be greatly appreciated.
Heck, even telling me what the name of the object is that is larger than my scrollView.contentSize would put me on the right track...
//Test-Image is just a 960 by 960 image that's numbered around the edges 1-10 so you can tell if it's being moved
UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"Test-Image.png"]];
self.imageView = tempImageView;
[tempImageView release];
scrollView.contentSize = CGSizeMake(imageView.frame.size.width, imageView.frame.size.height);
//Tested with this, results the same.
//[scrollView setContentSize:CGSizeMake(960, 960)];
NSLog(#"What is my scrollView's height attribute?...%f", scrollView.contentSize.height);
// Returns 960
NSLog(#"What is in scrollView's width attribute?...%f", scrollView.contentSize.width);
// Returns 960
scrollView.contentOffset = CGPointMake(480, 480);
scrollView.maximumZoomScale = 8.0;
scrollView.minimumZoomScale = 0.25;
// Commenting clipsToBounds out doesn't seem to have any effect
scrollView.clipsToBounds = YES;
scrollView.delegate = self;
[scrollView addSubview:imageView];
Unfortunately, I do not have a specific answer.
Reference. Try [scrollView addSubview: self.imageView]; instead of [...addSubview: imageView];
Content Size. Try setting the content size after adding the ImageView.
[scrollView setContentSize: CGSizeMake(imageView.frame.size.width, imageView.frame.size.height)];
Delegate. Did you use and set the scrollview's delegate property (oIWScroll.delegate = self;)?
Clipping. It should not matter.
ScrollView Frame. Make sure the frame of the scrollview is equal to or smaller than [UIScreen mainScreen].applicationFrame.
Framing. When I had a situation similar to what you described, one of the the things I did was to create a container UIView, add it to the scroll view and stuff the objects into the container view. But you really should not have to do that for one image.
I also set the contentMode = UIViewContentModeTop.
I hope these suggestions help.