需求：当点击tabBar下面的item的时候，判断是否登录，没有登录跳转登录页面
听起来很简单，来实现代码：
//UITabBarControllerDelegate
- (BOOL)tabBarController:(UITabBarController*)tabBarController shouldSelectViewController:(UIViewController*)viewController {
if(USERINFO.isUserLogin) {
LoginViewController*loginVC = [[LoginViewControlleralloc]init];
loginVC.hidesBottomBarWhenPushed=YES;
[self.navigationControllerpushViewController:loginVCanimated:YES];
return
NO;
}
return YES;
}
结果你会发现不如愿了，点击没反应了。
解决方法：跳转用modal，代码改为
[selfpresentViewController:[[UINvigationControlleralloc]initWithRootViewController:loginVC]animated:YEScompletion:nil];
