herrtim herrtim - 11 months ago 62
iOS Question

How can I programmatically set selected tab of UITabBarController while also triggering shouldSelectViewController in UITabBarControllerDelegate

I'm trying to animate the transitions between tabs in my UITabBarController, which is working fine when I push on the tab buttons. However, when I switch tabs programmatically by calling

[self.tabBarController setSelectedIndex:2];

in a swipe gesture recognizer, the shouldSelectViewController function is NOT being called in my UITabBarControllerDelegate delegate, and therefore my animation isn't being triggered.

Is there a way to accomplish what I want? Can I programmatically trigger the tab switch differently perhaps so that the shouldSelectViewController function gets called?

Answer Source

If you have implemented - (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController in your tabBarController's delegate than you can call it manually.

[self.tabBarController.delegate tabBarController:self.tabBarController shouldSelectViewController:[[tabBar viewControllers] objectAtIndex:2]];
[self.tabBarController setSelectedIndex:2];

Hope this helps.

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