- (void)viewWillDisappear:(BOOL)animated{
if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound){
//用户点击了返回按钮
}
[super viewWillDisappear:animated];
}
if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound){
//用户点击了返回按钮
}
[super viewWillDisappear:animated];
}
501

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