CODEWITHSUNDEEP
iosswiftviewviewcontrollerappdelegate
user1528944
user1528944

Reputation: 223

How can I interact with specific Views from the AppDelegate?

I have a function in my appdelegate that is being called when a notification fires off. When this function is called I am hoping to get access to a specific ViewController and manipulate a table cell whether it is the current View or not. I was able to get this to work using the rootViewController method but since it is no longer set as the root view this no longer works.

I am currently using this code:

let stopOption = UIAlertAction(title: "OK", style: .default) {
        (action:UIAlertAction)->Void in self.audioPlayer?.stop()
        print("Stop index is \(index)")
        Alarms.sharedInstance.setEnabled(false, AtIndex: index)
        let sb = UIStoryboard(name: "Main", bundle: nil)
        let mainVC = sb.instantiateViewController(withIdentifier: "MainVC")
        dump(mainVC)
        let cells = (mainVC as! MainAlarmViewController).tableView.visibleCells
        dump(cells)
        for cell in cells
        {
            if cell.tag == index{
                print("Found the cell")
                let sw = cell.accessoryView as! UISwitch
                sw.setOn(false, animated: false)
            }
        }
    }

The first "dump" statement is returning the correct ViewController but it does not show any of the subViews and the second dump statement returns "- 0 elements".

Any help is massively appreciated.

Upvotes: 0

Views: 87

Answers (1)

Prashant Tukadiya
Prashant Tukadiya

Reputation: 16456

When this function is called I am hoping to get access to a specific ViewController and manipulate a table cell whether it is the current View or not

For that you need to use Notification

here is example how to use notificatoin http://dev.iachieved.it/iachievedit/notifications-and-userinfo-with-swift-3-0/

you can post notification from AppDelegate and catch to ViewController

Upvotes: 1

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