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/// 导航返回时跳过的控制器数目
@property (assign, nonatomic) NSInteger navSkipCount;

- (BOOL)navigationShouldPopOnBackButton {
    NSArray *navStack = self.navigationController.viewControllers;
    [self.navigationController popToViewController:navStack[navStack.count - 2 - self.navSkipCount] animated:YES];
    return NO;
}