VTMagic

VTMagic is a page container library, you can custom every page controller by different identifier if you need. It's so easy to use!（中文手册传送门）

Usage

To run the example project, clone the repo, and run pod install from the project directory first.

Installation

VTMagic is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "VTMagic"

Integration

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self addChildViewController:self.magicController];
    [self.view addSubview:_magicController.view];
    [_magicController didMoveToParentViewController:self];

    [_magicController.magicView reloadData];
}

- (VTMagicController *)magicController
{
    if (!_magicController) {
        _magicController = [[VTMagicController alloc] init];
        _magicController.magicView.navigationColor = [UIColor whiteColor];
        _magicController.magicView.sliderColor = [UIColor redColor];
        _magicController.magicView.layoutStyle = VTLayoutStyleDivide;
        _magicController.magicView.switchStyle = VTSwitchStyleDefault;
        _magicController.magicView.navigationHeight = 40.f;
        _magicController.magicView.dataSource = self;
        _magicController.magicView.delegate = self;
    }
    return _magicController;
}

or like this

#import "VTMagicController.h"

@interface ViewController : VTMagicController

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.magicView.navigationColor = [UIColor whiteColor];
    self.magicView.sliderColor = [UIColor redColor];
    self.magicView.layoutStyle = VTLayoutStyleDefault;
    self.magicView.switchStyle = VTSwitchStyleDefault;
    self.magicView.navigationHeight = 40.f;
    self.magicView.dataSource = self;
    self.magicView.delegate = self;
    
    [self.magicView reloadData];
}

Protocols

You must conform to <VTMagicViewDataSource>. <VTMagicViewDelegate> and <VTMagicReuseProtocol> are optional.

VTMagicViewDataSource

- (NSArray<NSString *> *)menuTitlesForMagicView:(VTMagicView *)magicView
{
    return _menuList;
}

- (UIButton *)magicView:(VTMagicView *)magicView menuItemAtIndex:(NSUInteger)itemIndex
{
    static NSString *itemIdentifier = @"itemIdentifier";
    UIButton *menuItem = [magicView dequeueReusableItemWithIdentifier:itemIdentifier];
    if (!menuItem) {
        menuItem = [UIButton buttonWithType:UIButtonTypeCustom];
        [menuItem setTitleColor:RGBCOLOR(50, 50, 50) forState:UIControlStateNormal];
        [menuItem setTitleColor:RGBCOLOR(169, 37, 37) forState:UIControlStateSelected];
        menuItem.titleLabel.font = [UIFont fontWithName:@"Helvetica" size:16.f];
    }
    return menuItem;
}

- (UIViewController *)magicView:(VTMagicView *)magicView viewControllerAtPage:(NSUInteger)pageIndex
{
    if (0 == pageIndex) {
        static NSString *recomId = @"recom.identifier";
        VTRecomViewController *recomViewController = [magicView dequeueReusablePageWithIdentifier:recomId];
        if (!recomViewController) {
            recomViewController = [[VTRecomViewController alloc] init];
        }
        return recomViewController;
    }

    static NSString *gridId = @"grid.identifier";
    VTGridViewController *gridViewController = [magicView dequeueReusablePageWithIdentifier:gridId];
    if (!gridViewController) {
        gridViewController = [[VTGridViewController alloc] init];
    }
    return gridViewController;
}

VTMagicViewDelegate

- (void)magicView:(VTMagicView *)magicView viewDidAppeare:(UIViewController *)viewController atPage:(NSUInteger)pageIndex
{
    NSLog(@"pageIndex:%ld viewDidAppeare:%@", (long)pageIndex, viewController.view);
}

- (void)magicView:(VTMagicView *)magicView viewDidDisappeare:(UIViewController *)viewController atPage:(NSUInteger)pageIndex
{
    NSLog(@"pageIndex:%ld viewDidDisappeare:%@", (long)pageIndex, viewController.view);
}

- (void)magicView:(VTMagicView *)magicView didSelectItemAtIndex:(NSUInteger)itemIndex
{
    NSLog(@"didSelectItemAtIndex:%ld", (long)itemIndex);
}

VTMagicReuseProtocol

- (void)vtm_prepareForReuse
{
    NSLog(@"clear old data if needed:%@", self);
}

Features

Appearance methods

VTMagic will automatically calls appearance methods when user switches the page, you should do something in here, e.g. refresh page info.

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    // do something...
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    
    // do something...
}

Obtain magicController

You can obtain the nearest magicController in any child view controller which is conforms to <VTMagicProtocol>, after you import file VTMagic.h.

NSInteger currentPage = [self.magicController currentPage];
UIViewController *viewController = self.magicController.currentViewController;

Switch to specified page

[self.magicView switchToPage:3 animated:YES];

or like this

[self.magicController switchToPage:3 animated:YES];

Obtain specified view controller

UIViewController *viewController = [self.magicView viewControllerAtPage:3];

or like this

UIViewController *viewController = [self.magicController viewControllerAtPage:3];

License

VTMagic is released under the MIT license. See LICENSE for details.