iOS 系统tabbarcontroller拦截选中事件

- (BOOL)tabBarController:(UITabBarController*)tabBarController shouldSelectViewController:(UIViewController*)viewController

{

NSLog(@"viewcontoller===%@",viewController.childViewControllers);

if([[viewController.childViewControllersobjectAtIndex:0]isKindOfClass:[FOLLOWViewControllerclass]]&&[[UserObjectsharedInstance].login_statuesintValue]!=1)

{

[JXTAlertToolsshowAlertWith:selftitle:@""message:@"你还没登录,请去登录吧."callbackBlock:^(NSIntegerindex)

{

if(index==0)

{

[GlobalObjectexitLogin];

}

}cancelButtonTitle:@"确定"destructiveButtonTitle:@"取消"otherButtonTitles:nil,nil];

returnNO;

}

returnYES;

}