I have a UIScrollview and I want to scroll content of the scrollview automatically
How can we implement this
Using Timer and change contentSize every second
Related
I'm trying to make a collectionView that shows 10 item at first, when scrolling to the bottom I want to have a button that clicking it will load more info, its something simple but the thing is that I'm not using storyboard and I did everything programmatically, so how it can be done?
UICollectionView is a subclass of UIScrollView. So you need to:
Add your button as subview of your UICollectionView
Set it's frame in the way you prefer (if you count your frames in code - just set it manually) based on .contentSize of you UICollectionView.
Set .contentInset.bottom property based on the height of your button/footer
You need to handle the case when .contentSize changes. If your button should be visible all the time, maybe better to set your button frame in viewDidLayoutSubviews() function
If you want to show/hide it in some cases, you can animate it using UIView.animate(withDuration:) by setting .contentInset.bottom in the block
Here's my architecture.
I have a UIScrollView with some UIView's added in.
At the end on my scrollview i have a UICollectionView (embedded in my scrollview) in which i loads many data. I had to use a UICollectionView in order to reuse the multiple views displayed.
What i want is keep a smooth scroll when the user scrolls to the bottom of the parent scrollview and continue scrolling in the UICollectionView.
What i've made now is set the size of my UICollectionView equal to my UIScrollView Size and i've disabled bounces on both.
But i can't have a smooth scroll. When i reach the end of my UIScrollView, the scrollview's stop and then i have to re scroll on my UICollectionView
Not sure if it's really clear.
You should not normally "pass scroll" between elements. What you need to make sure is that the UICollectionView's frameSize is equal to its contentSize, meaning its frameSize expands as much as its contents so that all of its content is visible without having to scroll. Then your UIScrollView will handle the scroll and show the contents of your UIViewController by scrolling just itself.
On one screen,I am having some content and below that having collectionview,so I want to know how to manage scrollview of screen and scroll of collectionview.I cant make disable collectionview scroll bcoz I am using paging for collectionview on DecelerationEnded delegate method,So for that I ahve to use scroll of collectionview.
So,please give me solution that how to mange these two scrollview same time because screen is not responsing for two seconds.
You can put tag(self.scrollView.tag = XXX) for the scroll view and put conditions in the delegate methods.
Hello I have some app (from book) which looks like this:
You can see the image is cropped. I want to have a UIScrollView
which allows to scroll up and also see the whole picture.
This is how my app looks in interface builder.
What do you suggest where should I add ScrollView (as which subview etc.) to achieve what I need? (I guess I will need some intermediary UIView?)
This is what I usually do for fixed contents:
In IB create your view with a UIScrollView at your desired size and position connected to a scrollView outlet.
Also in IB create the view for the contents (bigger than the scroll view). Connect this to a UIView outlet called contentView.
In viewDidLoad do this:
// Put the content view into the scroll view
[self.scrollView addSubview:self.contentView];
self.scrollView.contentSize = self.contentView.bounds.size;
If you want dynamic contents then programatically lay them out in viewWillLayoutSubviews and set the contentSize of the scrollView.
Add the UIScrollView as a direct child of Control, and then put everything else inside the scroll view.
Add UIScrollView as first child of your main View and put all of your controls (UITextView, UILabel,...etc ) as sub view of UIScrollView.
And use UIScrollView property contentSize for set your visible area.
For more information read this tutorial.
You should add the UIScrollView directly under Control, then everything else, besides the toolbar should go into it.
What I usually do in these cases is set the scrollView to the size so all content fits, add the content, then resize the scrollview so it only occupies as much of the screen you want.
I was wondering how one would update items such as a UILabel when a scroll view reaches a certain point - I have a picker app in which the user scrolls a UIScrollView and the contents of the screen update relative to the position of the UIScrollView however I would like to know how to actually update the contents of a view, again, things like a UILabel relative to the position of the UIScrollView.
You can use scrollView.contentOffset to get current content position inside scrollView.