CODEWITHSUNDEEP
iosobjective-cuiviewuinavigationcontrolleruinavigationbar
Erik
Erik

Reputation: 2530

Pushing between 2 ViewControllers - NavigationBar

I'm trying to push from one VC to another - which is 0 problem, but VC1 has a orange NavigationBar while VC2 has a completely transparent NavigationBar. I would like to transition smoothly between the 2 different NavigationBars during the push segue. However, at the moment - it comes this blackish sliding bar and the color isn't transitioning nicely. This is my code:

VC1 viewWillAppear:

    // Set the BarTintColor to translucent and text colors to white
[UIView animateWithDuration:0.5 animations:^{
    self.navigationController.navigationBar.barTintColor = [UIColor orangeColor];
    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
    self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:UITextAttributeTextColor];
}];

VC 2 viewWillAppear:

    // Make the NavigationBar transparent
[UIView animateWithDuration:0.5 animations:^{
    self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
    [self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = [UIImage new];
    self.navigationController.navigationBar.translucent = YES;
}];

How can I solve this in a more efficient and better way?

Thanks! Erik

Upvotes: 0

Views: 126

Answers (1)

Erik
Erik

Reputation: 2530

Solved it like this:

    // Make the NavigationBar transparent
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
[UIView animateWithDuration:0.4 delay:0 usingSpringWithDamping:.8 initialSpringVelocity:1.5 options:UIViewAnimationOptionTransitionNone animations:^{
    [self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = [UIImage new];
    self.navigationController.navigationBar.translucent = YES;
}completion:^(BOOL finished) {
}];

Setting the clearColor outside of the animateWithDuration block made the animation a billion times smoother. Now it animates nicely away

Upvotes: 1

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