iOS_侧滑开启和关闭

• iOS默认开启侧滑返回，在一些页面(手势解锁页面)需要将侧滑进行关闭，为了不对原本的页面产生影响，需要在页面消失时将侧滑打开。

// 视图将要出现
- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    // 关闭 侧滑
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;
    }
}
// 视图将要消失
- (void)viewWillDisappear:(BOOL)animated{
     [super viewWillDisappear:animated];
     // 开启侧滑
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.enabled = YES;
    }
}