Backup
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
if (self.fromResultView) {
NSMutableArray *array = [[NSMutableArray alloc]initWithArray:self.navigationController.viewControllers];
if (array.count >= 3) {
[array removeObjectsInRange:NSMakeRange(array.count - 3, 2)];
self.navigationController.viewControllers = array;
}
self.fromResultView = NO;//保证只允许一次
}
}