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）

CHANGELOG(变更日志)

Installation

CocoaPods

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

pod "VTMagic"

Manually

1. Download the project and drop folder VTMagic into your project.
2. Import file VTMagic.h.

#import "VTMagic.h"

Requirements

• iOS 6.0

Usage

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

Integration

- (void)viewDidLoad
{
    [super viewDidLoad];

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

    [_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 viewDidAppear:(UIViewController *)viewController atPage:(NSUInteger)pageIndex
{
    NSLog(@"pageIndex:%ld viewDidAppear:%@", (long)pageIndex, viewController.view);
}

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

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

VTMagicReuseProtocol

This method will be called when page is reused, you should clear old data or reset content offset in here.

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

Features

Appearance methods

VTMagic will automatically calls the appearance methods when user switches the page, maybe 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...
}

Get magicController

You can get 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

You can switch to some specified page.

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

or like this

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

Get specified view controller

You can get any page controller by page index, it will return nil if the page is not on the screen.

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.