I can't quite seem to figure it out how to get the index etc to switch to it i've tried stuff like this. The nearest ancestor in the view controller hierarchy that is a tab bar controller. If the view controller or one of its ancestors is a child of a tab bar controller, this property contains the owning tab bar controller.How to use Page control using swift and xcode 10.
This property is nil if the view controller is not embedded inside a tab bar controller. The solution provided by Leo Dabus see above works fine for me.
However - some controls have bad states. Can't fix that, but this little workaround will do you all good:.
Learn more. Switch tab bar programmatically in Swift Ask Question. Asked 5 years, 8 months ago. Active 3 months ago. Viewed 60k times. Azabella Azabella 1 1 gold badge 9 9 silver badges 18 18 bronze badges.
Active Oldest Votes. So you just need to add "? Leo Dabus Leo Dabus k 48 48 gold badges silver badges bronze badges. Is there a way to make it so that the tab slides instead of just changing abruptly? I just saw your comment now :.Select a product name and be sure to select Swift for the language. Next, inside Main. Make sure to set the new UIPageViewController object as the initial view controller in the attributes inspector.
These will eventually be scrolled through in the page view controller. These will be used in code to instantiate the view controllers. Alternatively, you could create three separate UIViewController subclass files and assign them to the objects in the storyboard. The view controllers will be shown in this order. Sweet, green is shown, but what about red and blue?
You definitely asked a great question. So, you have to get a little creative. I take advantage of UIPageControl. Here is a snippet:. I have also added this to the GitHub repo. To hide the dots, simply leave off these methods. Hey Jeff—thanks for a really handy tutorial! Or is the default behavior for the page view controller to present that at the bottom?
In my app, I have my main UIViewControllera subview that is transparent but slides in from the bottom of the screen, and then 4 subviews of the sliding subview that are all working UIScrollViews. I seriously can't grasp delegates and how to implement the using swift. Any help would be much appreciated! Also, I'm doing this all programmatically, so no IB please.
Happy to provide code if it'll help. The code example enabled me to create a page control indicator on my scrollView, and it was the first time attempting to do this. I found it very clear. You will need to play with the frame numbers to get it to appear where you want it.
For reference the numbers mean x position for top left corner of indicator, y coordinate for top left corner, width of page indicator, height of page indicator. The scrollView delegate is actually very simple to set up. And then in viewDidLoadyou complete the delegate setup by assigning the scroll view's delegate property to your class with the line scrollView. Delegates are just methods of a class, that can be palmed off to another class. These methods are usually callbacks.
A callback for a TextField, when the user hits return, can be implemented in a Delegate. The delegate can be implemented in the ViewController class. Now when the user hits return the TextField Object will call the delegate method in the ViewController object.
The great thing about this is, you can access all the variables and methods of the ViewController object from the delegated method. Otherwise you would need a handle to the ViewController object within the TextField object itself. Delegates are implemented as protocols, which are just interfaces. So if the ViewController implements the TextFieldDelegate protocol, all your textfield callbacks can be called from within the ViewController object.
Learn more. Asked 6 years, 2 months ago. Active 2 years, 3 months ago. Viewed 46k times. Ross Isdaner Ross Isdaner 1 1 gold badge 2 2 silver badges 3 3 bronze badges.
Active Oldest Votes. The lines you probably need to add to your project are: 1: add UIScrollViewDelegate as a protocol when you first name your view controller class. Natalia Natalia 1, 15 15 silver badges 22 22 bronze badges. I have managed to set up page control indicators using your function, so thanks a lot for that. However, the indicator doesn't change when the page changes. I tried fixing it by setting up pageControl. I have 3 pages and the page indicator just keeps jumping between the two extremes, it never takes the middle value.
Where should I set pageControl. You can update the code for pageControl. You'll have to implement the PageViewControllerDelegate for that. Documentation is here developer.Auto Layout constraints allow us to create views that dynamically adjust to different size classes and positions.
The constraints will make sure that your views adjust to any size changes without having to manually update frames or positions. Can you imagine a world without Auto Layout? We used to calculate frames ourselves or we used auto resizing masks yes, that is related to the translatesAutoresizingMaskIntoConstraints property. I decided to ask my followers with a poll on Twitter which resulted in votes and a lot of replies with strong opinions.
Do you do auto layout in code or interface builder? You might think that we can be happy with the idea that SwiftUI will solve this after all. Therefore, I would personally recommend to always start with Storyboards if you just get started with building apps.
Combining the Interface Builder with constraints in code could be a solution as well. Writing constraints while using the Interface Builder as well could be seen as writing Auto Layout side effects.
Once you decided to write your constraints in code you enter a world with a lot of possibilities. Luckily enough, these type of constraints are no longer needed:. First of all, we need to set the translatesAutoresizingMaskIntoConstraints to false. After that, you start by creating an array of constraints. In this array, you define your set of constraints:. This example shows the basics of writing constraints and should be both readable and understandable.
It creates a square and centers it in its superview. The last line is needed to actually activate the constraints so they make your layout appear as expected. Each UIView comes with a collection of anchor properties that allow you to set up relations between views:.
How to Use UIPageViewController in Swift
Each Anchor it returns subclasses from NSLayoutAnchor which comes with a few common methods to set relationships. These include equal to, greater than, and less than or equal to relationships. Once you start writing your constraints its important to keep in mind the order of your constraints if you start working with constants.
If we would change the order of the outer square and inner square the constants need to be set with negative values:. The same counts for the top and bottom constraints. Therefore, keep in mind the following order when setting constraints and switch the view and superview for the last two anchors:.
Although it might seem really obvious to just use leftAnchor and rightAnchoryou might want to think about using leadingAnchor and trailingAnchor instead.
Doing so adds support for Right-to-Left languages to your views. This is mostly important for views like labels in which you want to make sure that they get flipped for Right-to-Left languages. Performance and Auto Layout constraints can be a topic on its own. By using those extensions you prevent yourself from writing a lot of boilerplate code. Once you have to set priorities to your constraints to prevent breaking constraints you might be happy with the following extension:.
If you want to learn more about Property Wrappers, check out my blog post Property wrappers to remove boilerplate code in Swift. I wrote a blog post on User Interface debugging tools that can help you solve Auto Layout issues: UI Debugging by making use of third-party apps. There are a lot of external dependencies that say that they make it easier to write constraints. External frameworks introduce custom code patterns that might not be familiar to current and future colleagues.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I send the user over to a page on a button click. I thought about something like self. In the first casebe sure that you embedded your ViewController to a navigationController in your storyboard.
If your last ViewController is embebed in a TabViewController the below code will send you to the root For questions regarding how to embed your viewController to a navigationController in the storyboard:.
I would like to suggest another approach to this problem. Instead of using the navigation controller to pop a view controller, use unwind segues. This solution has a few, but really important, advantages:. You can find more details in Unwind Segues Step-by-Step. The how to is better explained in the former link, including how to send data back, but here I will make a brief explanation. Learn more. Asked 5 years, 7 months ago.
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Active 4 months ago. Viewed k times. Now if the user taps on a cell, I would like to push him back to the previous page. What is the correct way to do it? FelixSFD 5, 9 9 gold badges 39 39 silver badges bronze badges. Christian Christian 5, 8 8 gold badges 32 32 silver badges 72 72 bronze badges. Active Oldest Votes. Codetard 1, 21 21 silver badges 32 32 bronze badges. How can I send data back to previousController when the cell is tapped?
JDDelgado This is how you send the data back with the user, stackoverflow. For Swift 3 it is. Vyacheslav Vyacheslav SandipSubedi use [weak self] and self?. Fullpower Fullpower 6 6 silver badges 10 10 bronze badges. That's not 'fully' correct. If you present a view controller that contains its own navigation, and after you push a view controller use that method dismiss: it will not only dismiss the current view controller, but also the root view controller, and it's not what was asked here.
The question did not ask if the user had a navigation controller. This is the simplest and best answer for no navigation controller. This should really be the accepted answer. Thanks Droid - Hi ernestofndz, you might be right in saying that the rootVC will also be dismissed, but this does not happen with me, it only dismisses the currentVC, i am adding and removing items programmatically, and it might not be the same approach with the normal adding elements on storyboard.Your feedback will help ensure we release only the best.
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Both Wade and Oladipo played for Tom Crean in college and worked out together last summer in Miami. Cleveland brings a 13-game winning streak into Friday's contest at Bankers Life Fieldhouse. On Monday, Indiana (14-11) took advantage of an undermanned Knicks squad to snap a two-game losing streak. Against the Bulls on Wednesday, Indiana needed a heroic late 3-pointer from Victor Oladipo, who pulled up on the fastbreak and stole a victory from the struggling Chicago squad.
But come Friday, Indiana faces one of its toughest tests of the season: a rolling Cleveland Cavaliers (18-7) team that has won 13 in a row after a desultory start to their season.
The seemingly ageless LeBron James enters Friday night on pace for one of his most statistically dominant seasons of his career. The 13-time All-Star is now averaging 28 points, 7. The Pacers enter Friday's test against a division rival on a solid stretch of play as well, having won eight of their last 11 contests. Indiana's 3-point shooting has been a key to its success all season long.
The Pacers have knocked down 40 percent of their threes this year, the second best mark in the league, trailing only the Golden State Warriors. Pacers: PG - Darren Collison, SG - Victor Oladipo, SF - Bojan Bogdanovic, PF - Thaddeus Young, C - Myles TurnerCavaliers: PG - Jose Calderon, SG - JR Smith, SF - Jae Crowder, PF - LeBron James, C - Kevin LovePacers: Myles Turner - questionable (sore right calf), Cory Joseph - questionable (sore left shoulder), Glenn Robinson III - out (left ankle surgery rehabilitation), Edmond Sumner - out (left knee surgery rehabilitation)Cavaliers: Derrick Rose - out (left ankle sprain), Iman Shumpert - out (left knee arthroscopic surgery), Isaiah Thomas - out (right hip), Tristan Thompson - out (left calf strain)On April 11, 2012, the Pacers began a nine-game win streak against the Cavaliers that would last until March 2014.
Furthermore, the Cavs only won three games from 2010-15 against the Pacers. November 1, 2017: On the second night of a back-to-back, playing against a well-rested Cavaliers team, the Pacers notched their biggest win of the season, toppling the reigning Eastern Conference Champion Cleveland Cavaliers 124-107 at Quicken Loans Arena.
We played the game the right way. We talk about that all the time, you play the game the right way and normally good things happen. The Pacers continue their six-game homestand with a matchup against LeBron James and the Cleveland Cavaliers on Friday, Dec. The Game Night Special can be purchased at the Pacers Team Store on game day as well as online from 10:00 AM-Midnight.The result will be determined by the number of points accumulated for a specified race by the two named drivers after the handicap has been applied.
The Field includes any driver who is not listed. Any drivers who do not qualify for the race will be deemed no action. The race must be run within one week of the scheduled off time for there to be action. The official NASCAR winner of the race shall be the winner of the race for wagering purposes (this includes all races which are halted prematurely for any reason).
In the event of the specified number of laps not being fully completed, all bets will be void. All match-ups will be settled as per the official NASCAR result. If one driver fails to complete the race then the other driver will be declared the winner.
Where both drivers fail to complete the race then the number of full laps completed will determine the result. If both drivers fail to complete on the same lap then the official placing as assigned by the controlling authority will determine the result. Both drivers must start the race (e. If any driver is replaced before the start of the race then all match-ups will be void.
For example, Driver Gordon qualifies in 1st place but due to injury is replaced by driver Brack (all bets void). If a driver is replaced during the race then bets will stand on his replacement.
For example, Driver Gordon starts the race but due to injury is replaced after 10 laps by replacement Driver Brack who then finishes the race and places 4th. In the race standings and for betting purposes Driver Gordon would be credited with a 4th place finish. Race props will be settled on official NASCAR results. If a race is shortened and no official results are posted then all bets will be deemed no action. For all markets, for customers ease, we will endeavour to grade all wagers at the conclusion of the race on the unofficial result.
However, we reserve the right to alter any wagers which may be affected by the official results as displayed on Nascar. Qualifying match-ups are based on qualifying times (quickest times) and not the starting line-up. For example, positions 37th to 43rd will be decided on times and not on any other criteria.
If two or more drivers have an equal qualifying time then the driver with the higher grid position will be deemed the winner. Bets will be void unless the driver starts the qualifying lap. If any driver fails to start then bets are deemed no action.
In the event of qualifying not being completed then all qualifying bets will be no action.