ios滑动返回

首先再这个方法设置代理 

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    self.navigationController.interactivePopGestureRecognizer.delegate = self;

}

然后实现代理方法

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer

{

    return YES;

}