UIRefreshControl not firing target after switching tab

Question

Created Oct ’18

Replies 2

Boosts 0

Views 2.8k

Participants 2

I have navigation bar controller and inside one of the tab table view controller with pull down refresh action to refresh data from server.

When I start app and load view first time it works ok, but if I switch tab and come back action method isn't fired again, only spinner is spinning.

Here is some of the code used in my class that is extending UITableViewController:

//this is as class property:

let refresh = UIRefreshControl()

//inside viewDidLoad()

refresh.addTarget(self, action: #selector(reload), for: .valueChanged)

self.refreshControl = refresh

//and to manually fire reload action:

self.refreshControl?.beginRefreshing()

reload()

//inside viewWillAppear()

refresh.addTarget(self, action: #selector(reload), for: .valueChanged)

self.refreshControl = refresh

//these two lines have no effect whatsoever, even if I remove them nothing changes...

//and reload method:

@objc func reload()

{

print("reload")

fetchData()

}

reload() doesn't get called after switching tabs so user cannot manually reload data from server anymore.

Answered by matej@Ineor in 335939022

Solved issue with:

https://useyourloaf.com/blog/uirefreshcontrol-fun-and-games/?utm_source=iOS%20Dev%20Weekly&utm_campaign=d888c696dd-iOS_Dev_Weekly_Issue_99&utm_medium=email&utm_term=0_7bda94b7ca-d888c696dd-298114649

You have to make refresh control in storyboard editor as well link it with action.

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Answer 1

matej@Ineor OP

Oct ’18

Accepted Answer

Solved issue with:

https://useyourloaf.com/blog/uirefreshcontrol-fun-and-games/?utm_source=iOS%20Dev%20Weekly&utm_campaign=d888c696dd-iOS_Dev_Weekly_Issue_99&utm_medium=email&utm_term=0_7bda94b7ca-d888c696dd-298114649

You have to make refresh control in storyboard editor as well link it with action.

0

Answer 2

Claude31 OP

Oct ’18

You don't tell how you initiate UIRefreshControl and how the class is defined.

But it is possible that it is empty after

let refresh = UIRefreshControl()

What is beginRefreshing doing ?

So, please, dont extract a few lines of code out of context. It is very difficult to help with a more comprehensive understanding of what you have defined. And no time to try and guess what it could be !

0