根据需求来改变跳转:
[self.navigationController popToRootViewControllerAnimated:NO];
[self dismissViewControllerAnimated:NO completion:^{
AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
JKMainTabViewController *tab = (JKMainTabViewController *)delegate.window.rootViewController;
tab.selectedIndex = 0;
}];
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