BOOLisExit=NO;
for(UIViewController *temp in self.navigationController.viewControllers) {
if([temp isKindOfClass:[AddBFrientList class]]){
isExit=YES;
[self.navigationController popToViewController:temp animated:YES];
break;
}
}
if(isExit==NO)
{
AddBFrientList *list=[[AddBFrientList alloc]init];
list.sta_mid=_sta_mid;
[self.navigationController pushViewController:list animated:YES];
}
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