Refresh first view after rejecting Popover
I am switching from the first view controller (tableview) to the second view controller which is the tableview. After I'm not with the second view, I need to reload the table view in the first controller. popoverPresentationControllerDidDismissPopover gets called if I go outside of the popover, but what if there is another button in the second table view that navigates to the first? I usually need the user to click the Add button to get out of the table rather than outside the popover. I am leaving the external response as a cancel action.
Thank.
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The delegate method is popoverPresentationControllerDidDismissPopover
not called on programmatic deviation.
The solution is when you dismiss the popover by calling dismiss(animated:completion:)
you must also call the table view to reload the data.
So basically you are calling tableView.reloadData()
twice. One in popoverPresentationControllerDidDismissPopover
, one after dismiss(animated:completion:)
, which is in the cut method of the add button.
Update
From your screenshot I am assuming your first view controller (VC1) is the one on the second, second view controller (VC2) is the pop.
If so, you have two options:
- In VC2, declare your own protocol to notify VC1 to reload the table, look at the data whenever a row is selected, and set a delegate in VC1 to VC2.
-
Instead of using the protocol, you can simply declare the block property in VC2. For example:
@property (copy, nonatomic) void (^itemSelectedHandler)()
;
And when an item is selected, call this (still in VC2):
self.itemSelectedHandler();
Then in VC1, after initializing VC2, which is the popover, you process the block. For example:
vc2.itemSelectedHandler = ^{
[vc1.tableView reloadData];
}
Unfortunately I have no experience with fast programming, so I have to use the c object code as an example.
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Swift 3.0 version:
Popover VC:
define property:
var dismissHandler: (() -> Void)!
calling this handler when the popover is rejected:
self.dismissHandler()
Parent VC:
pass a handler in the Segue preparation method
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
...
destinationVC.dismissHandler = {
self.tableView.reloadData()
}
...
}
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