iPhone popup menu like iPad popover? - iphone

How can i implement this popup menu in iphone app like a popover in ipad?
EDIT: This is the best at moment: https://github.com/runway20/PopoverView

iOS 8 and later
Beginning with iOS 8, you can use UIPopoverPresentationController for iPhones in addition to iPads.
Setup
Add a UIBarButtonItem to your main View Controller.
Add another View Controller to the storyboard. Change it to the size that you want the popover to be and add any content that you want it to have. For my example I just added a UILabel. If you want a whole menu, then just add a table view or list of buttons.
Add a segue from the bar button item to the view controller that you will use as the popover. Rather than show, choose Present as Popover.
Select the segue in the storyboard and set the identifier to popoverSegue (or whatever string you called it in the code).
In the Attributes inspector for the popover view controller, check Use Preferred Explicit Size and confirm that it is the size you want it to be.
Code
This is the code for the main view controller that has the bar button item in it.
class ViewController: UIViewController, UIPopoverPresentationControllerDelegate {
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "popoverSegue" {
let popoverViewController = segue.destinationViewController
popoverViewController.modalPresentationStyle = UIModalPresentationStyle.Popover
popoverViewController.popoverPresentationController!.delegate = self
}
}
// MARK: - UIPopoverPresentationControllerDelegate method
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
// Force popover style
return UIModalPresentationStyle.None
}
}
Popover at an arbitrary anchor point
If you want to set the popover to appear somewhere besides a bar button item (on a UIButton for example) then you need to set the sourceView and sourceRect. See this answer for details.
Further reading
The above example comes mostly from the first link.
iPad Style Popovers on the iPhone with Swift
iOS 8 Popover Presentations
UIPopoverPresentationController on iOS 8 iPhone
General overview of popup options in iOS

Have a look at the iPhone UIPopoverController implementation: WEPopover

On iPhone you would generally use a UIActionSheet for a stack of buttons like that. It slides up from the bottom, rather than popping up next to the button, but that's the standard behavior on iPhone.

There is one that is even better than WEPopover. Developed by a company called 50pixels, it is called FPPopover.
You can download FPPopover at https://github.com/50pixels/FPPopover

You would have to manually instantiate a UIView using a custom background image or drawing with transparency, add some UIButtons (or other type of custom view) on top, and also somehow handle all touches outside that view.
Note that is is non-standard UI. An actionsheet would be more HIG compliant.

To get a popover from a right side bar button item on a navigation controller that is part of a tableview controller, the following worked for me for Swift 4 and Xcode 9.
Follow the steps in Suragch answer above (as edited by the Community.)
Do not implement the Segue as shown in the answer above. For some reason, the segue causes the popover to go full screen despite setting the explicit size.
Give your popover view controller a title in Attributes Inspector
Add the following code in the TableView controller where the popup will show.
Modify the string identifier (the one here is referencing a Constant.swift file)
Modify "as! FilterVC" to use the title of the your popover view controller.
/// Shows a filter popover view
#IBAction func filterBtnPressed(_ sender: UIBarButtonItem) {
let popover = storyboard?.instantiateViewController(withIdentifier: FILTER_VC) as! FilterVC
popover.modalPresentationStyle = UIModalPresentationStyle.popover
popover.popoverPresentationController?.backgroundColor = UIColor.green
popover.popoverPresentationController?.delegate = self
popover.popoverPresentationController?.backgroundColor = ColorPalette.Blue.Medium
popover.popoverPresentationController?.sourceView = self.view
popover.popoverPresentationController?.sourceRect = CGRect(x: self.view!.bounds.width, y: 0, width: 0, height: 0)
popover.popoverPresentationController?.permittedArrowDirections = .up
self.present(popover, animated: true)
} }
func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
return UIModalPresentationStyle.none
}

You can check WYPopoverController: https://github.com/sammcewan/WYPopoverController

The screenshot above is not a UIActionSheet. It looks like a simple UIView subclass with custom UIButtons on top of it. So go ahead and create the subclass according to your needs and then add it as a subview to your view every time you need it.

Related

How can i set master/detail view side by side in portrait mode using uisplitviewcontroller

I am using the new UISplitViewController, coming with iOS 14 as follows:
let splitViewController = UISplitViewController(style: .doubleColumn)
splitViewController.preferredDisplayMode = .oneBesideSecondary
let primaryVC = PrimaryViewController()
splitViewController.setViewController(primaryVC, for: .primary)
let secondaryVC = SecondaryViewController()
splitViewController.setViewController(secondaryVC, for: .secondary)
It works as expected, but i wanted to get a similiar result like this:
Landscape
i want to only have a expand icon in the secondaryViewController to hide or show the sidebar as you maybe also know from the Apple Notes App for iPad. I want to hide/remove default Sidebar Icon.
Portrait
i want the primary and secondary view side-by-side. With the new UISplitViewController, the primary view always collapsed and you get a "Back" Button in the NavigationBar.
So is there a way to manipulate or customize the new UISplitViewController to get the result, as i described above?
What i tried
switch to the "classic" UISplitViewController like this:
let splitViewController = UISplitViewController(style: .unspecified)
but with the style unspecified i get the following runtime error:
API misuse. -initWithStyle: may not be used with UISplitViewControllerStyleUnspecified
I think that in your case the style should be doubleColumn, as it's what you want to achieve in both portrait and landscape mode.
Try to implement this method in the UISplitViewControllerDelegate:
optional func splitViewController(_ splitViewController: UISplitViewController,
collapseSecondary secondaryViewController: UIViewController,
onto primaryViewController: UIViewController) -> Bool
And if not already set, set your UISplitViewController's delegate. Return false if you don't want to collapse the split view controller (which means that if not collapsed, it will display two columns; Which is your case).

How to get the navigation bar to show large title upon a segue back?

I have a tab bar app where one of the views is a UITableViewController containing static cells as content with 1 section and 1 row.
I want the Large Title to be set to "Always," so I made the selection on the storyboard and the title was large on the simulator. Now when the user taps "Start Chat," the app will segue to the Virtual Assistant View Controller, where the Large Title is set to "Never" on the storyboard. Now the problem is that when the user segues back to the previous view controller with the "Start Chat" table view cell, the title is not large anymore.
It is interesting that when I set the table view to be scrollable, the title becomes large again upon dragging down the table view. I made sure the navigation bar on the Navigation Controller storyboard is checked with the "Prefers Large Titles." I am using Xcode 11, and this was not a problem when using Xcode 10.
I tried creating a custom class for the view with the start chat button and this code did not work in making the title large from a segue back:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.navigationItem.largeTitleDisplayMode = .always
navigationController?.navigationBar.prefersLargeTitles = true
What else could I do? Any help will be greatly appreciated!
I'd use willMove(toParent:) to change the title back before the segue is performed.
override func willMove(toParent parent: UIViewController?) {
navigationController?.navigationItem.largeTitleDisplayMode = .always
navigationController?.navigationBar.prefersLargeTitles = true
}
Set the properties when setting up the UINavigationController, before presenting it. If you already presented the navigation controller, try doing this to force-update the navigation bar:
navigationController?.navigationItem.prompt = ""
navigationController?.navigationItem.prompt = nil
I took this workaround from this question.
In your particular case, it would be better to subclass the navigation controller and set those properties in its viewDidLoad method, so its properties (largeTitleDisplayMode and prefersLargeTitles) are set in a self-contained code.

Programmatically press back button for UIViewController with UITableView iOS swift

I have a UIViewController that implements UITableViewDelegate, UITableViewDataSource and that contains a UITableView as a member variable. When a user click on one of the rows of that table, the app performs a storyboard segue to open the detail view controller. That detail view controller of course has a button in the top left of the screen that is the "back" button to go back up to the UIViewController with the UIViewTable.
So, suppose that I want to programmatically "click" that back button. How exactly would I do that in swift? This is the most recent version of swift (swift 4?) in XCode 10.1.
UPDATE:
So here is how I solved this. As the answers below show, it is possible to use self.navigationController?.popViewController(animated: true) to just return to the previous view controller. What I discovered I also wanted to do, however, was to call a specific method in that view controller so that it executed a certain behavior once it got shown. It turns out that is also possible, but in my case it was a bit tricky, since that prior view controller was actually a UITabBarController. Therefore I had to get the ViewController that I was interested in from the UITabBarController. I did it like this:
let numvc = navigationController!.viewControllers.count
let tvc:UITabBarController = navigationController!.viewControllers[numvc-2] as! UITabBarController
let my_vc: MyCustomVC = tvc.viewControllers![0] as! MyCustomVC
my_vc.some_function()
Here of course MyCustomV is my custom view controller class and some_function() is the method I want to call on that class. Hope this helps someone.
When You run a segue you perform a "pushViewController" method to the next view, so if you want to go back to the previous view programmatically you just have to do is pop the last view like so:
self.navigationController?.popViewController(animated: true)
UPDATE
You just need the if statement if you have multiple segues from that viewController, if not, you can delete and just cast the next view as you wish and set the properties, let the autocomplete write the *prepare(for segue... * method for you, so You don't run into any problems
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "yourSegueName" {
let destinationVC = segue.destination as! CustomViewController
destinationVC.labelExample.text = "Some text I'm sending"
}
}
Are you sure you need to "click" the button?
If all you need is to dismiss details view controller, you can just call navigationController?.popViewController(animated: true)
Or if you want to deal directly with button, you can tell it to send its actions: backButton.sendActions(for: .touchUpInside)
Or if you absolutely need to show button clicking animation, then you will need something like this (you should play and choose suitable delay):
backButton.isHighlighted = true
DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.3) {
backButton.isHighlighted = false
backButton.sendActions(for: .touchUpInside)
}

How to reference a View from within a Window Controller?

I'm having a Window Controller with a toolbar. I also have a View Controller containing some views. How do I reference a view from the View Controller within my Window Controller? I'm still learning macOS development and I'm missing the bigger picture how code is structured and classes are meant to interact.
My concrete problem right now is this: Using XCode 9.4.1 I have a window with a toolbar and a button in it. That's how my WindowsController.swift looks like:
import Cocoa
class WindowController: NSWindowController {
override func windowDidLoad() {
super.windowDidLoad()
window?.titleVisibility = .hidden
}
#IBAction func startExport(_ sender: NSButton) {
print("Start Export")
}
}
In the ViewControllerScene there's a WKWebView that's loading a web page. When the button in the toolbar is pressed, I want to call that Web Views takeSnapshot method. So I need a reference in WindowsController.swift to that Web View, but control-dragging the Web View from the storyboard to WindowsController.swift in the assistant editor doesn't let me create that outlet.
This:
let vc = contentViewController as? ViewController
will take you to your view controller.

Swift iOS -How to Add Subview to Window's Center?

I have an activity indicator that gets presented on an iPhone and iPad. In the iPad in split screen mode it gets presented to whichever side of the view that called it. I would instead like it to get presented in the middle/center the window's screen. If I do it this way wether on the iPhone in portrait or iPad in split screen mode it will always be in the center of the screen.
How do I do this?
MyView: UIViewController{
let actInd = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge)
#IBAction fileprivate func buttonPressed(_ sender: UIButton) {
guard let window = UIApplication.shared.keyWindow else { return }
//how to add actInd as subview to the window' screen?
actInd.startAnimating()
}
}
It's pretty simple. Turn off the auto-resizing mask. Add the add actInd to window, then set the center anchors.
actInd.translatesAutoresizingMaskIntoConstraints = false
window.addSubview(actInd)
actInd.centerXAnchor.constraint(equalTo: window.centerXAnchor).isActive = true
actInd.centerYAnchor.constraint(equalTo: window.centerYAnchor).isActive = true
Window is subclass of UIView. Just add it as it's subview like you're adding a view to another view. But remember that window is shared throughout your app, so adding it every-time will consume memory, remove it after your job is done.
If you want to center it in the window, you can use autoResizingMask or add constraints to it.