34 questions
I want to manage TableView data sources in the middle of the layout in the UIViewController with the FetchedResultsController, but it does not recognize TableView (see error message below).2018-10-25 ...
Thank you very much for letting me know how to get the time that Swift4 has started.When I actually wrote the code, it turned out to be negative or a ridiculous number.Question 1. Does the systemUptim...
[What I want to do] I want to store data from the GetDataFromAPI class getDataFromAPI function in the ViewController class variable data.つまStumbling points brI don't know how to return the variables i...
Extensions based on the contents of the current textbook (adjust the volume of the UI slider sound source)is about to be implemented.The problem I want to solve is that I can adjust the volume after p...
class ViewController:UIViewController { //..... var friendId—String! userID=098752 letPath=ref.child(user/\(userID)/friend/userId) Path.observeSingleEvent(of:.value, with:{(snapshot)in self.friendI...
I'm studying swift, but I don't know much about classes and structures.When function a calls function b, if the instance of the class is passed to function b as an argument, changing the value of the ...
I want to switch to PAUSE image when I tap START image as attached image, but I can't.追Additional The build passes through the xcode, but when I tap the START image, it does not switch to the PAUSE im...
When I built the application that used CoreData in swift3 with swift4, the following check dependencies came outThe use of Swift3 @objc reference in Swift4 mode is decremented. Please address decremen...
What is the standard for the transition between UIViewControllers in swift4xcode10?When I looked into it, I found that many of them connected segue from the xcode storyboard GUI... and that it was dif...
I'm a beginner practicing database operations at realm.Implementation of tag functionality, database designI was able to run the database using this answer.Therefore, I would like to display a list of...
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