我有一个 UITabBarController
,其中包含 4 个不同的 UIViewControllers
.
在第一个选项卡上有一个 UINavigationViewController
,其中包含其子 UIViewController
.在不点击标签栏的情况下,我想将用户带到第二个标签上.为此,我尝试了:
I have a UITabBarController
which containing 4 different UIViewControllers
.
On first tab there is a UINavigationViewController
which contains its child UIViewController
. without tapping the tab bar, i want to take user on second tab. For this I tried:
self.navigationController.tabBarController.selectedIndex = 1;
但它不起作用.
忽略任何错误我是新手.
ignore any mistake i am a newbie.
谢谢.
在尝试更改选项卡之前,请执行以下操作:
Do the following, before trying to change tab:
UITabBarController *tab = self.tabBarController;
if (tab) {
NSLog(@"I have a tab bar");
[self.tabBarController setSelectedIndex: 1];
}
else {
NSLog(@"I don't have one");
}
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