In my app, I have a similar view like Instagram reels where video plays and at bottom there is profile picture, description of video, like button and comments button.
When I click comments button, I would like to show comments table view controller covering upto half screen, with comments and inputbar accessoryview at bottom like below:
half screen view controller
When I click inside inputbar accessoryview, the comments view controller show cover fullscreen and should show keyboard like below:
full screen view controller
Please advise me on how to achieve this behaviour.
You could create a new ViewController in storyboard or code, then set the set self.view.backgroundColor = .clear (alternatively, you could change the Opacity of the backgroundColor of the view in storyboard by using a custom color).
Next, place a UIView on the storyboard. Create an #IBOutlet for the height constraint of the view. You can get the height of the view (the ViewController's UIView, not the one you just placed) by using
let viewHeight = self.view.frame.size.height
self.commentsView.setHeight(viewHeight/2)
Make sure to include this extension in your project for setHeight:
extension UIView {
func setHeight(_ h:CGFloat, animateTime:TimeInterval?=nil) {
if let c = self.constraints.first(where: { $0.firstAttribute == .height &&
$0.relation == .equal }) {
c.constant = CGFloat(h)
if let animateTime = animateTime {
UIView.animate(withDuration: animateTime, animations:{
self.superview?.layoutIfNeeded()
})
}
else {
self.superview?.layoutIfNeeded()
}
}
}
}
There are two custom views - viewA and viewB.ViewB is a small view added in viewA. At first viewA is filled in the whole screen. ViewB is located in the bottom of viewA(out of the screen). When click a button in viewA, viewB bottom constant of constraints will be -100, thus viewB will display in the bottom of the screen. But there is a button in viewB did not response its selector. Here is my code:
In ViewA
let viewB: ViewB = {
let view = ViewB(
view.setup()
return view
}()
viewB constraints:
viewB.snp.makeConstraints { (make) in
make.trailing.leading.equalTo(self)
make.height.equalTo(100)
make.top.equalTo(self.snp.bottom)
}
when click button to arouse viewB
UIView.animate(withDuration: 0.5) {
self.snp.updateConstraints({ (make) in
make.bottom.equalTo(-100)
})
}
self.layoutIfNeeded()
In viewB:
class ViewB: UIView {
let b: UIButton = {
let button = UIButton(type: UIButtonType.custom)
button.addTarget(self, action: #selector(btnClicked), for: UIControlEvents.touchUpInside)
button.backgroundColor = UIColor.green
button.setTitle("Button", for: .normal)
return button
}()
func btnClicked() {
print("btnClicked")
}
func setup() {
addSubview(b)
b.snp.makeConstraints { (make) in
make.leading.top.bottom.equalTo(self)
make.width.equalTo(100)
}
}
}
Your code by itself works fine. So the issue is probably something like the button being overlaid by another view which takes the touch actions. You can test this using the view debugger or provide a link to your project so one of us can take a look to see what is going on.
i think , your view is going out of its super View or Any other view is coming on its upper layer. please see by this
superview.clipsToBounds : YES
I'm constantly running into this issue, I don't know how to treat UITableViewCells as UIViews.
I added a button to my UITableViewCell:
let btnWidth = self.contentView.frame.size.width * 1.1
let btnHeight = self.contentView.frame.size.height * 1.6
btnJoinChannel = UIButton(frame: CGRect(x:0,y:0,width:btnWidth,height:btnHeight))
btnJoinChannel.setTitle("Join Channel", for: .normal)
btnJoinChannel.setTitleColor(.white, for: .normal)
btnJoinChannel.backgroundColor = .clear
btnJoinChannel.addTarget(self, action: #selector(JRegionCell.loadRegion), for: .touchUpInside)
self.contentView.addSubview(btnJoinChannel)
Buttons never work on UITableViewCells by default because some kind of touch gesture value overrides the new button.
What do I configure to prevent this override? I would like users to touch buttons inside UITableViewCells. Basically, my cells need to behave like UIViews.
Your button is bigger than content view. Buttons don't work if they are out of superview.
I'm hitting a wall. I have a UIScrollView with a child UIView (contentView) which contains the content and a button. The button is not detecting any taps. I've tested many methods, creating the button programmatically, using storyboard, and creating a UITapGestureRecognizer in the contentView... still nothing. From what I understand, UIScrollView does not delegate any touch events to it's children. How do I solve this?
You can create the button programmatically then you add it as a subview for your contentView.
let button = UIButton()
button.frame = CGRectMake(contentView.center.x-20.0, contentView.center.y-20.0, 40.0, 40.0)
button.addTarget(self, action: "handleTap", forControlEvents: UIControlEvents.TouchUpInside)
button.setTitle("Title", forState: UIControlState.Normal)
contentView.addSubview(button)
On the action you can handle the tap
func handleTap() {
//Do whatever you want
print("Button tapped")
}
I tested it using a scrollView and a UIView inside the scrollView
I am trying to add a button ontop of a uitableview controller table view. The view controller has a navigation controller and static cells, which is why it is a uitableviewcontroller and not a uiviewcontroller. Now I am trying to add a button at the bottom of the screen that is attached to the navigation controller so that it doesn't scroll with the table view.
I am trying to make something similar to what is below. It has a navigation controller for the top bar, a table view with static cells and then a button, but how did they do the button?
Image: http://postimg.org/image/ilsmqqrip/
Thanks!
UPDATE: How can I use a uiviewcontroller with a tableview with static cells using Swift?
I find Container Views very useful in this scenario! A clean solution and very easy to implement.
Just create a normal UIViewController, add your button and a ContainerView as subviews of this UIViewController (the middle one in the image below). Finally create Embed Segue from ContainerView to your UITableViewController (the one on the right).
This way you can use static cell prototypes, not being limited only to UITableView at the same time.
Result:
there is a better solution for this. you can do this by disabling the Auto Layout(button.translatesAutoresizingMaskIntoConstraints = false) property of the corresponding Button or any UIView for floating button:
Swift 4
//create a button or any UIView and add to subview
let button=UIButton.init(type: .system)
button.setTitle("NEXT", for: .normal)
button.frame.size = CGSize(width: 100, height: 50)
self.view.addSubview(button)
//set constrains
button.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
button.rightAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.rightAnchor, constant: -10).isActive = true
button.bottomAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.bottomAnchor, constant: -10).isActive = true
} else {
button.rightAnchor.constraint(equalTo: tableView.layoutMarginsGuide.rightAnchor, constant: 0).isActive = true
button.bottomAnchor.constraint(equalTo: tableView.layoutMarginsGuide.bottomAnchor, constant: -10).isActive = true
}
I did something similar with UITableViewController and a static datasource. I added the button in the footerview of my tableview.
To make it align to the bottom of the screen i needed this code in my viewcontroller:
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
// Make footerview so it fill up size of the screen
// The button is aligned to bottom of the footerview
// using autolayout constraints
self.tableView.tableFooterView = nil
self.footerView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.tableView.frame.size.height - self.tableView.contentSize.height - self.footerView.frame.size.height)
self.tableView.tableFooterView = self.footerView
}
In short, I resize the footerview to take up all the remaining space after the contentsize of the table view is removed. Since the button is aligned to the bottom of the footerView with autolayout, it will stay in the bottom of the screen.
The Storyboard:
Here is the result:
The UITableViewController will take up the whole space, so you won't be able to add the button. Refactor your UITableViewController based code into UIViewController with UITableView manually added. This way you will be able to set the size of your table view and put the button to the bottom.
Unfortunately UITableViewController has a tableView as its top level view. Of course if you look in the view debugger you can see that the tableview is not the root view. Therefore you can add the buttons to the tableView's window programatically. If you have to do it after the fact, this is probably the easiest way to add a top level element over a UITableViewController. Otherwise if you are doing it in the initial design, you can use container view for your buttons and a UITableViewController for the TableView. The downside of this approach is you end up with two view controllers, one for the container and one for the table and its often necessary to pass information back and for between them. If you are using swift you can simplify this by nesting the tableViewcontroller inside the container view controller class.
If you want to add a button to the window, you can do this lazily once you are sure that the view has a window. Note that the buttons belong to the window and not to the view controller, so its your responsibility to remove them when the view controller disappears.
private weak var button: UIButton!
...
override func didMove(toParentViewController parent: UIViewController?) {
super.didMove(toParentViewController: parent)
guard self.button == nil, let window = tableView.window else {
return
}
let button = UIButton(frame: CGRect(x:0, y:40, width: 200, height: 20))
button.setTitle("This is a red button", for: .normal)
button.backgroundColor = UIColor.red
window.addSubview(button)
self.button = button
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
button?.removeFromSuperview()
}
Step 1 :-
Drag and drop one uiview to UITable View Controller (Static)
Automatically it sticks to the bottom.
If you need to, you can also add two buttons inside UIView... It depends on your requirements.
Step 2 :-
Connect the outlet for uiview (outletView)
Step 3 :-
Add this below code in View Will Appear.
override func viewWillAppear(_ animated: Bool) {
outletViewBottom.backgroundColor = .red
tableView.addSubview(outletViewBottom)
// set position
outletView.translatesAutoresizingMaskIntoConstraints = false
outletView.leftAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.leftAnchor).isActive = true
outletView.rightAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.rightAnchor).isActive = true
outletView.bottomAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.bottomAnchor).isActive = true
outletView.widthAnchor.constraint(equalTo: tableView.safeAreaLayoutGuide.widthAnchor).isActive = true
outletView.heightAnchor.constraint(equalToConstant: 50).isActive = true // specify the height of the view
}
Step 4 :-
Now run the code... Happy coding.
all you need to do is to add your Top view whichever it is to the navigationController.view like so:
self.navigationController?.view.addSubview(YOUR_TOP_VIEW)
so if you need a sticky button/view etc... on top of TableViewController which does not scroll with tableView, use this approach.
Here is a UIViewController, with a UITableView added as a subview. At the top right, you can see a dropdown that says Content: Dynamic Prototypes. Change it to Static Cells.