问题
I'm implementing UITabBar in my app. I managed making it work by implementing UITabBarDelegate in my header file and using
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item
in my .m file (as explained in this tutorial).
Now, there are 3 scenarios in my app where I wish to set the selected UITabBarItem manually from within the code (and not based on user action):
- Upon
viewDidLoad - After
didReceiveMemoryWarning - In a certain case when the user is entering another view controller - when they get back, they should get back to a different tab than the one they clicked on.
Can anyone direct me to how this should be done?
回答1:
The UITabBarController class has two properties for managing the selected tab, namely, selectedViewController and selectedIndex. Look into those in the reference.
来源：https://stackoverflow.com/questions/6806770/how-to-set-the-selected-item-in-a-uitabbar-from-within-the-code