CODEWITHSUNDEEP
iosipad
cshavit
cshavit

Reputation: 414

Prevent contentSizeForViewInPopover from animating

I have a popover which contains a UITableView. In the storyboard I've set the popover height to fit the entire table, and it displays nicely. However, in some situations I need to display less cells, and in these cases I'd like to change the height of the popover. I do it thus:

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated]; 
    if (trimFourCells) {  // reduce the popover's height by that of four cells
        CGSize size = self.contentSizeForViewInPopover;
        size.height -= 4*60;
        self.contentSizeForViewInPopover = size;
    }
}

It works well, except that the change is animated: first the full size is shown, then it shrink in about one second.

My question is whether this animation can be disabled.

I have tried to pass NO in [super viewDidAppear:animated], and even tried to move that line after the size change. It did not prevent the animation. Then I tried to move the code to viewWillAppear, and that did not even change the height.

Upvotes: 0

Views: 1335

Answers (2)

cshavit
cshavit

Reputation: 414

Thanks to @frowing, here is the solution. Instead of changing the size in the popover's code, it has to be done in the caller. I have added code like the following to prepareForSegue:

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    UIPopoverController *pc = ((UIStoryboardPopoverSegue*)segue).popoverController;
    if (trim_nCells > 0) { // trim that many cells from the table
        CGSize size = pc.contentViewController.contentSizeForViewInPopover;
        size.height -= trim_nCells * cellHeight;
        [pc setPopoverContentSize:size animated:NO];
    }
    (... rest of the prep code ...)
}

Note that since it's done before the display, there is no animation involved, so the value of the animated: param has no effect.

Upvotes: 2

Fran Sevillano
Fran Sevillano

Reputation: 8163

Just use

- (void)setPopoverContentSize:(CGSize)size animated:(BOOL)animated

like this:

[popoverController setPopoverContentSize:size animated:NO];

Upvotes: 1

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