如何以编程方式关闭 UISearchBar？

Question

I have a standard table view, with a UISearchController implemented via a NIB. I want to mimic what happens when the user clicks "Cancel" in the search bar - the normal behaviour is that the search bar goes away and the table returns to its original state. Basically, I want to have the same happen when the user selects an item that appears in their search results.

I can't find anywhere the process of what happens when the user clicks "Cancel".

Answer 1

This is a sorta old question, but I just beat my head against this for an hour or two and finally figured it out, so I thought I'd share for posterity. At first I tried doing things like resigning first responder / deleting search text / etc by hand, but in this view I wanted the user to be able to possibly use the search bar multiple times, and doing things manually was meaning that the search bar would have had to be re-set-up every time the user started editing it again - seemed like the wrong approach. Here's what I did:

I had already added the search bar, with the optional search display controller, in Interface Builder. In my implementation, I set up a UISearchDisplayController IBOutlet, and then linked it to the search display controller using IB. Finally, in the spot where I want to dismiss the search bar, I simply have to call:

[mySearchController setActive:NO];

Works like a charm!

Answer 2

Usually, the searchBarCancelButtonClicked: method looks something like this:

yourSearchBar.text = @"";
[yourTableView reloadData];
[yourSearchBar resignFirstResponder];

Answer 3

Here is how i solved this problem after a few hours of experiments =)

for(UIView *subView in self.searchDisplayController.searchBar.subviews){
    if([subView isKindOfClass:UIButton.class])
    {
        UIButton *cancelButton = (UIButton*)subView;
        [cancelButton sendActionsForControlEvents: UIControlEventTouchUpInside];
        break;
    } 
}

Answer 4

Set active also cleared my UISearchBar text and so my array of data items would get cleared, therefore this worked for me:

self.searchController.dismissViewControllerAnimated(true, completion: nil)

This cleared the UIDimmingView and left my search text alone - perfect in my case.