tabBarController popToRooTViewControler
每次用户更改选项卡时，对于所选选项卡，我想将其推送到其顶级控制器。我已经为 Tabbarcontroller 实现了委托方法，如下所示：
- (void) tabBarControler:(UITabBarController *)tabBarController didSelectViewController:(UIViewController*)viewController{
[[self navigationController] popToRootViewController Animated:NO];
}
这似乎不起作用，但我可以确认每次更改选项卡时都会调用该方法
Every time a user changes a tab, for the selected tab I want to push it to its top level controller. I have implemented the delegate method for the Tabbarcontroller like this:
- (void) tabBarControler:(UITabBarController *)tabBarController didSelectViewController:(UIViewController*)viewController{
[[self navigationController] popToRootViewController Animated:NO];
}
This does nto seem to work but I can confirm the method is being called every time I change tabs
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根据您的代码，它看起来像是一个简单的拼写错误。正确的方法是
[[self navigationController] popToRootViewControllerAnimated:NO]（你有一个额外的空间）。此外，tabBarController 拼写错误，这会阻止调用该方法。如果这不起作用，则
[self navigationController]可能是错误的（取决于您从何处调用该方法）。如果您从 AppDelegate 调用，它可能应该类似于[tabBarController.selectedViewController.navigationController popToRootViewControllerAnimated:NO]。希望有帮助。Based on your code, it looks like a simple misspelling. The correct method is
[[self navigationController] popToRootViewControllerAnimated:NO](you had an extra space). Also, tabBarController is misspelled, which would prevent the method from being called.If that doesn't work, it's possible that
[self navigationController]might be wrong (depending on where you're calling the method from). If you're calling from your AppDelegate, it should probably be something like[tabBarController.selectedViewController.navigationController popToRootViewControllerAnimated:NO]. Hope that helps.