（IOS）禁用系统滑动返回功能

- (void)viewDidAppear:(BOOL)animated

{

    [superviewDidAppear:animated];

    if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {self.navigationController.interactivePopGestureRecognizer.delegate =self;

    }

}

- (void)viewWillDisappear:(BOOL)animated {

    [superviewWillDisappear:animated];

    if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {self.navigationController.interactivePopGestureRecognizer.delegate =nil;

    }

}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer*)gestureRecognizer

{

    return NO;

}