CODEWITHSUNDEEP
iosanimationuigesturerecognizerslidesaslidemenu
fir
fir

Reputation: 387

iOS animation warning on sliding menu (SASlideMenuVC)

I am getting "Multiple gravity behaviour per animator is undefined and may assert in the future" in debugger. I think it is because i use custom [SASlideMenu view controller] (https://github.com/stefanoa/SASlideMenu). What is it?

Upvotes: 1

Views: 806

Answers (1)

milpita
milpita

Reputation: 334

Look for the code where UIGravityBehavior objects are created and added to the UIDynamicAnimator instance. It seems behaviors are accumulating in the animator (and not being released when completing the action).

This project has the same issue https://github.com/simonwhitaker/ioscon-2014-demo. It can be solved using - (void)removeBehavior:(UIDynamicBehavior *)behavior:

- (IBAction)dismissAlertView:(id)sender {
    UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.alertView]];

    gravity.magnitude = 4;
    __weak __typeof(self) weakSelf = self;
    __weak __typeof__(gravity) weakGravity = gravity;

    gravity.action = ^{
        __strong __typeof(weakSelf) strongSelf = weakSelf;
        if (!CGRectIntersectsRect(strongSelf.alertView.frame, strongSelf.alertBackgroundView.bounds)) {

            //[strongSelf.animator removeAllBehaviors];
            [strongSelf.animator removeBehavior:weakGravity];

            [UIView animateWithDuration:0.1 animations:^{
                strongSelf.alertBackgroundView.alpha = 0.0;
            }];
        }
    };

    [self.animator addBehavior:gravity];
}

Upvotes: 1

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