I have UIView with auto layout constraint. My view contains subview. I have height constraint that I attached to my view controller as a property.
#property (weak, nonatomic) IBOutlet NSLayoutConstraint *headerViewHeightLayoutConstraint;
In view did load I set:
[[self headerViewHeightLayoutConstraint] setConstant:0.0f];
But I still see subviews. So I check Clip subviews in storyboard for that view but I still see subview.
Related
Here is my structure of views for this
-ViewController
-UIView
-UIScrollView
-UIView * customview
Data comes form web Serivce. automatically increase the UIScrollView Height and subview Height.
I am fixing autolayouts to UIScrollView and UIView.
In customview UILables and UITableView.
You need to take the Outlet of your customeview height constrains.
#property (strong, nonatomic) IBOutlet NSLayoutConstraint *viewHeight;
bind viewHeight with your customeview height constrains and set the constant property of your outlet
self.viewHeight.constant = 2000; //Your subview Height
in define image you can see the your subview height constrains and bind outlet with this constrains after it height will change dynamically as per your .constant value.
I am using UIScrollview and top of a UIView but scrolling is not working.
for scrollview i added constraints all the side (0,0,0,0) then i have take container view and adedd constraints for (0,0,0,0) for all side . and one more constraints i added for this container view to View with equal width.
my scrollview hight is 504 and containner hight is 840. i am not getting any warning and suggestion constraints but not able to scroll . what is missing here .Please suggest me .
if you have added constraints properly . then add this
make property or your scrolview and container view as
#property (weak, nonatomic) IBOutlet UIScrollView *scrollview;
#property (weak, nonatomic) IBOutlet UIView *containerview;
then in .m file
#synthesize scrollview,containerview,
then add this
-(void)viewDidAppear:(BOOL)animated
{
[scrollview setContentSize:CGSizeMake(scrollview.frame.size.width, containerview.frame.size.height)];
}
I hope the will solve your issue.
There is no problem with autolayout in x-code 6.4 just try to check that you have properly bind the outlets of scrollview as well as give contentsize to scrollview that how much you would like to scroll your scrollview.
scrollview.ContentSize = CGContentSize(0, height);
--> Give height as float or integer as how much you want to scroll your scrollview.
For the ScrollView to work, reference it to your .h file by CTRL + Dragging the scroll view, and on your .m file add a
scrollView.contentSize(0,doubleTheSizeOfTheViewHeight);
if you want the scroll to be scrollable horizontally do the same with the width.
Hope this helps
Update
Or you can always use this for the storyboard way of doing it:
Storyboard UIScrollView contentSize?
To make UIScrollview scrolling, you have to uncheck checkbox with "Use Auto Layout" from XIB.
I am designed my screen in xib using autolayout(xcode 6). I have to redesign the screen programmatically using autolayout.
I have 4 views in my screen horizontally. I have to hide the third view and move the fourth view to third view's position using autolayout.
How do I update the constraint programmatically.
You may use NSLayoutConstraint and assign proper IBOutlet to any of your constraints and then where you wants to change the view size use constant property of NSLayoutConstraint to change the value.
e.g
in your viewController.h
#property (strong, nonatomic) IBOutlet NSLayoutConstraint *tempConstraint;
some where in your viewController.m
tempConstraint.constant = 50; // or what ever you want
I am using autolayout. In xib i have a scrollview as a parent view. Added one view as a subview. For that subview i have added four child elements. Three are views(say view1,view2,view3) and one is label which is having multiline text.
I am using the below code to change the height of the view
#property (strong, nonatomic) IBOutlet NSLayoutConstraint *view1Height;
self.view1Height.constant = 200;
In this case there is no issues with content size the view2 and view3 frames are adjusted automatically.
But while coming to multiline label I am using the below code for setting label text
#property (strong, nonatomic) IBOutlet NSLayoutConstraint *textLabelHeight;
self.textLabelHeight.constant = expectedLabelSize.height;
But here I am facing issue with scroll content size. Unable to view the entire text. Similarly I want to place one more view below the label how to set constraints for it.
I originally had a normal view with a bunch of stuff in it, and I want that view to be an UIScrollView, so I created a new ScrollView and dragged everything over. The view is not scrolling.
After looking around - I unchecked use autolayout, but that didn't work. I also realize that this could be solved by setting contentSize, but I have access to this view through a variable that is of type UIView, and not UIScrollView. In other words I would be doing -
self.someController.view.contentSize = //something
where self.someController.view is only an UIView and contentSize is not a property of UIView(or at least that's what I'm seeing- I get compiler warnings).
Why is this scroll view not scrolling?
EDIT -
So I stupidly forgot I can cast - I did that, but it's still not working -
UIScrollView* basicCardView = ((UIScrollView *)self.detailController.view);
basicCardView.contentSize = CGSizeMake(basicCardView.frame.size.width * 12,
basicCardView.frame.size.height);
You need to connect your scrollview to Iboutlet var in .m .
Create var in your interface:
IBOutlet UIScrollView *scrollview;
And connect to your scrollview in storyboard, then you can set contentsize.
[scrollview setContentSize:CGSizeMake(2000,200)];
Elto has it correct. To elaborate: In your view controller .m say it's called MyViewController:
#interface MyViewController ()
#property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
#end
Go back to storyboard, select your view controller and select the connections tab (last one on the upper right). You should now see an outlet called scrollView. Drag a connection from that outlet to the scroll view that you added to the scene.
Now the content size code can be written. Just to get it working, use large constants in content size, like:
self.scrollView.contentSize = CGSizeMake(1000, 1000);
The size you're setting in the post (on the wrong view) looks like it's just the size of one of the subviews. You want the content size of the scroll view to be more like a multiple of the scrollView's size. You want the rectangle it can scroll within to at least encompass the frame (not the bounds) of every subview it contains.