/PanPush_NavigationController

为UINavigationController添加右滑Pop、左滑Push出ViewController的功能,集成非常简单.

Primary LanguageObjective-C

PanPush_NavigationController

为UINavigationController添加右滑Pop、左滑Push出ViewController的功能,集成非常简单.

1.How to use

使用or继承Demo中提供的`PanNavigationController`即可

2.右滑Pop返回

因为右滑返回功能是默认开启的，如果需要在某一个页面关闭，需要在此Controller的生命周期方法中设置，但因为UINavigationController是全局的，所以在此Controller消失的时候再设置打开，因为其他Controller很有可能会使用此功能(用户亦可根据自己的使用场景设置开启or关闭时机)

//关闭右滑返回功能
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    PanNavigationController *nav = (PanNavigationController *)self.navigationController;
    nav.isForbidDragBack = YES;
}

//开启右滑返回功能
- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    PanNavigationController *nav = (PanNavigationController *)self.navigationController;
    nav.isForbidDragBack = NO;
}

3.左滑Push

此功能是参照网易新闻App在新闻详情页，左滑push出评论列表页面的实现方式.

因为在UINavigationController导航堆栈中，我们根本不知道即将push出的是哪一个Controller,so,在某个Controler中要使用此功能时,必须设置delegate,并实现其代理方法,指定其左滑push出的新的Controller.

@interface SecondViewController ()<PanPushToNextViewControllerDelegate>

既然UINavigationController是全局的，所以在此Controller消失的时候需要关闭此功能(用户亦可根据自己的使用场景设置开启or关闭时机)

//开启左滑push功能，设置代理，实现其代理方法
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    PanNavigationController *nav = (PanNavigationController *)self.navigationController;
    [nav setNextViewControllerDelegate:self];
}

//关闭左滑push
- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    PanNavigationController *nav = (PanNavigationController *)self.navigationController;
    [nav setNextViewControllerDelegate:nil];
}

指定通过左滑push功能推出的新的Controller

#pragma mark -- PanSwiper Delegate --
- (UIViewController *)swiperBeginPanPushToNextController:(PanSwiper *)swiper
{
    FirstViewController *controller = [[FirstViewController alloc] initWithNibName:NSStringFromClass([FirstViewController class]) bundle:nil];
    return controller;
}

Demo Gif