iOS开发--仿新闻首页效果WMPageController的使用详解

这一篇记录的是iOS开发中第三方库WMPageController控件的使用方法，主要是用来分页显示内容的，可以通过手势滑动来切换页面，也可以通过点击标题部分来切换页面，如下图所示：

使用方法:

新建工程DemoTest1，然后通过cocoapods引入WMPageController到项目中，Podfile文件的内容如下：

platform :ios,'7.0'

target 'DemoTest1' do

 pod 'WMPageController', '~> 1.6.4'

end

方法一：

（1）创建几个ViewController继承自UIViewController测试用：

（2）打开AppDelegate.m文件，在其中加入下面一个方法：

#import "WMPageController.h"

#import "OneViewController.h"
#import "ViewController.h"
#import "TwoViewController.h"

@interface AppDelegate ()

@property(nonatomic,strong) WMPageController *createPages;

@end

@implementation AppDelegate

- (WMPageController *)createPages {

  //WMPageController中包含的页面数组
  NSArray *controllers = [NSArray arrayWithObjects:[ViewController class], [OneViewController class],[TwoViewController class], nil];
  //WMPageController控件的标题数组
  NSArray *titles = [NSArray arrayWithObjects:@"体育新闻", @"娱乐新闻",@"直播新闻", nil];
  //用上面两个数组初始化WMPageController对象
  WMPageController *pageController = [[WMPageController alloc] initWithViewControllerClasses:controllers andTheirTitles:titles];
  pageController.menuViewStyle = WMMenuViewStyleLine;
  pageController.titleColorSelected = [UIColor whiteColor];
  pageController.titleColorNormal = [UIColor colorWithRed:168.0/255.0 green:20.0/255.0 blue:4/255.0 alpha:1];
  pageController.progressColor = [UIColor colorWithRed:168.0/255.0 green:20.0/255.0 blue:4/255.0 alpha:1];
  //  pageController.itemsWidths = @[@(70),@(100),@(70)]; // 这里可以设置不同的宽度

  //设置WMPageController每个标题的宽度
  pageController.menuItemWidth = 375/3;
  //设置WMPageController标题栏的高度
  pageController.menuHeight = 35;
  //设置WMPageController选中的标题的颜色
  pageController.titleColorSelected = [UIColor colorWithRed:200 green:0 blue:0 alpha:1];
  return pageController;
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

  WMPageController *page = [self createPages];

  UINavigationController *na = [[UINavigationController alloc] initWithRootViewController:page];

  self.window.rootViewController = na;

  [self.window makeKeyAndVisible];

  return YES;
}

方法二：

（1）创建个ViewController继承自WMPageController

（2）编辑ViewController.m文件，代码如下：

初始化设置：

#import "TwoViewController.h"
#import "OneViewController.h"
#import "TableViewController.h"

#import "ThreeViewController.h"

@interface ThreeViewController () 

@property (nonatomic, strong) NSArray *titleData;
@end

@implementation ThreeViewController

#pragma mark 标题数组
- (NSArray *)titleData {
  if (!_titleData) {
    _titleData = @[@"单曲", @"详情", @"歌词",@"歌词"];
  }
  return _titleData;
}
#pragma mark 初始化代码
- (instancetype)init {
  if (self = [super init]) {

    self.titleSizeNormal = 15;
    self.titleSizeSelected = 15;
    self.menuViewStyle = WMMenuViewStyleLine;
    self.menuItemWidth = [UIScreen mainScreen].bounds.size.width / self.titleData.count;
    self.menuHeight = 50;
  }
  return self;
}

WMPageController --Datasource & Delegate

#pragma mark - Datasource & Delegate

#pragma mark 返回子页面的个数
- (NSInteger)numbersOfChildControllersInPageController:(WMPageController *)pageController {
  return self.titleData.count;
}

#pragma mark 返回某个index对应的页面
- (UIViewController *)pageController:(WMPageController *)pageController viewControllerAtIndex:(NSInteger)index {

  switch (index) {
      case 0:{

        TwoViewController  *vcClass = [[TwoViewController alloc] init];
        vcClass.title = @"1";

        return vcClass;
      }

        break;
      case 1:{

        OneViewController *vcClass = [OneViewController new];
        vcClass.title = @"2";
        return vcClass;

      }
        break;
      case 2:{

        TableViewController *vcClass = [TableViewController new];
        vcClass.title = @"3";
        return vcClass;

      }
        break;

      default:{

        OneViewController *vcClass = [OneViewController new];
        vcClass.title = @"4";
        return vcClass;

      }

        break;
    }

}

#pragma mark 返回index对应的标题
- (NSString *)pageController:(WMPageController *)pageController titleAtIndex:(NSInteger)index {

  return self.titleData[index];
}

相关设置：

/**
 * Values and keys can set properties when initialize child controlelr (it's KVC)
 * values keys 属性可以用于初始化控制器的时候为控制器传值(利用 KVC 来设置)
  使用时请确保 key 与控制器的属性名字一致！！(例如：控制器有需要设置的属性 type，那么 keys 所放的就是字符串 @"type")
 */
@property (nonatomic, strong) NSMutableArray<id> *values;
@property (nonatomic, strong) NSMutableArray<NSString *> *keys;

/**
 * 各个控制器的 class, 例如:[UITableViewController class]
 * Each controller's class, example:[UITableViewController class]
 */
@property (nonatomic, copy) NSArray<Class> *viewControllerClasses;

/**
 * 各个控制器标题
 * Titles of view controllers in page controller.
 */
@property (nonatomic, copy) NSArray<NSString *> *titles;
@property (nonatomic, strong, readonly) UIViewController *currentViewController;

/**
 * 设置选中几号 item
 * To select item at index
 */
@property (nonatomic, assign) int selectIndex;

/**
 * 点击相邻的 MenuItem 是否触发翻页动画 (当当前选中与点击Item相差大于1是不触发)
 * Whether to animate when press the MenuItem, if distant between the selected and the pressed is larger than 1,never animate.
 */
@property (nonatomic, assign) BOOL pageAnimatable;

/**
 * 选中时的标题尺寸
 * The title size when selected (animatable)
 */
@property (nonatomic, assign) CGFloat titleSizeSelected;

/**
 * 非选中时的标题尺寸
 * The normal title size (animatable)
 */
@property (nonatomic, assign) CGFloat titleSizeNormal;

/**
 * 标题选中时的颜色, 颜色是可动画的.
 * The title color when selected, the color is animatable.
 */
@property (nonatomic, strong) UIColor *titleColorSelected;

/**
 * 标题非选择时的颜色, 颜色是可动画的.
 * The title's normal color, the color is animatable.
 */
@property (nonatomic, strong) UIColor *titleColorNormal;

/**
 * 标题的字体名字
 * The name of title's font
 */
@property (nonatomic, copy) NSString *titleFontName;

/**
 * 导航栏高度
 * The menu view's height
 */
@property (nonatomic, assign) CGFloat menuHeight;

// 当所有item的宽度加起来小于屏幕宽时，PageController会自动帮助排版，添加每个item之间的间隙以填充整个宽度
// When the sum of all the item's width is smaller than the screen's width, pageController will add gap to each item automatically, in order to fill the width.

/**
 * 每个 MenuItem 的宽度
 * The item width,when all are same,use this property
 */
@property (nonatomic, assign) CGFloat menuItemWidth;

/**
 * 各个 MenuItem 的宽度，可不等，数组内为 NSNumber.
 * Each item's width, when they are not all the same, use this property, Put `NSNumber` in this array.
 */
@property (nonatomic, copy) NSArray<NSNumber *> *itemsWidths;

/**
 * 导航栏背景色
 * The background color of menu view
 */
@property (nonatomic, strong) UIColor *menuBGColor;

/**
 * Menu view 的样式，默认为无下划线
 * Menu view's style, now has two different styles, 'Line','default'
 */
@property (nonatomic, assign) WMMenuViewStyle menuViewStyle;

@property (nonatomic, assign) WMMenuViewLayoutMode menuViewLayoutMode;

/**
 * 进度条的颜色，默认和选中颜色一致(如果 style 为 Default，则该属性无用)
 * The progress's color,the default color is same with `titleColorSelected`.If you want to have a different color, set this property.
 */
@property (nonatomic, strong) UIColor *progressColor;

/**
 * 定制进度条在各个 item 下的宽度
 */
@property (nonatomic, strong) NSArray *progressViewWidths;

/// 定制进度条，若每个进度条长度相同，可设置该属性
@property (nonatomic, assign) CGFloat progressWidth;

/// 调皮效果，用于实现腾讯视频新效果，请设置一个较小的 progressWidth
@property (nonatomic, assign) BOOL progressViewIsNaughty;

/**
 * 是否发送在创建控制器或者视图完全展现在用户眼前时通知观察者，默认为不开启，如需利用通知请开启
 * Whether notify observer when finish init or fully displayed to user, the default is NO.
 * See `WMPageConst.h` for more information.
 */
@property (nonatomic, assign) BOOL postNotification;

/**
 * 是否记录 Controller 的位置，并在下次回来的时候回到相应位置，默认为 NO (若当前缓存中存在不会触发)
 * Whether to remember controller's positon if it's a kind of scrollView controller,like UITableViewController,The default value is NO.
 * 比如 `UITabelViewController`, 当然你也可以在自己的控制器中自行设置, 如果将 Controller.view 替换为 scrollView 或者在Controller.view 上添加了一个和自身 bounds 一样的 scrollView 也是OK的
 */
@property (nonatomic, assign) BOOL rememberLocation __deprecated_msg("Because of the cache policy,this property can abondon now.");

/** 缓存的机制，默认为无限制 (如果收到内存警告, 会自动切换) */
@property (nonatomic, assign) WMPageControllerCachePolicy cachePolicy;

/** 预加载机制，在停止滑动的时候预加载 n 页 */
@property (nonatomic, assign) WMPageControllerPreloadPolicy preloadPolicy;

/** Whether ContentView bounces */
@property (nonatomic, assign) BOOL bounces;

/**
 * 是否作为 NavigationBar 的 titleView 展示，默认 NO
 * Whether to show on navigation bar, the default value is `NO`
 */
@property (assign, nonatomic) BOOL showOnNavigationBar;

/**
 * 用代码设置 contentView 的 contentOffset 之前，请设置 startDragging = YES
 * Set startDragging = YES before set contentView.contentOffset = xxx;
 */
@property (nonatomic, assign) BOOL startDragging;

/** 下划线进度条的高度 */
@property (nonatomic, assign) CGFloat progressHeight;

/** WMPageController View' frame */
@property (nonatomic, assign) CGRect viewFrame;

/**
 * Menu view items' margin / make sure it's count is equal to (controllers' count + 1),default is 0
  顶部菜单栏各个 item 的间隙，因为包括头尾两端，所以确保它的数量等于控制器数量 + 1, 默认间隙为 0
 */
@property (nonatomic, copy) NSArray<NSNumber *> *itemsMargins;

/**
 * set itemMargin if all margins are the same, default is 0
  如果各个间隙都想同，设置该属性，默认为 0
 */
@property (nonatomic, assign) CGFloat itemMargin;

/** 顶部 menuView 和 scrollView 之间的间隙 */
@property (nonatomic, assign) CGFloat menuViewBottomSpace;

/** progressView 到 menuView 底部的距离 */
@property (nonatomic, assign) CGFloat progressViewBottomSpace;

/** progressView's cornerRadius */
@property (nonatomic, assign) CGFloat progressViewCornerRadius;
/** 顶部导航栏 */
@property (nonatomic, weak) WMMenuView *menuView;

/** 内部容器 */
@property (nonatomic, weak) WMScrollView *scrollView;

/** MenuView 内部视图与左右的间距 */
@property (nonatomic, assign) CGFloat menuViewContentMargin;

/**
 * 左滑时同时启用其他手势，比如系统左滑、sidemenu左滑。默认 NO
  (会引起一个小问题，第一个和最后一个控制器会变得可以斜滑, 还未解决)
 */
@property (assign, nonatomic) BOOL otherGestureRecognizerSimultaneously;
/**
 * 构造方法，请使用该方法创建控制器. 或者实现数据源方法. /
 * Init method，recommend to use this instead of `-init`. Or you can implement datasource by yourself.
 *
 * @param classes 子控制器的 class，确保数量与 titles 的数量相等
 * @param titles 各个子控制器的标题，用 NSString 描述
 *
 * @return instancetype
 */
- (instancetype)initWithViewControllerClasses:(NSArray<Class> *)classes andTheirTitles:(NSArray<NSString *> *)titles;

/**
 * A method in order to reload MenuView and child view controllers. If you had set `itemsMargins` or `itemsWidths` `values` and `keys` before, make sure you have update them also before you call this method. And most important, PAY ATTENTION TO THE COUNT OF THOSE ARRAY.
  该方法用于重置刷新父控制器，该刷新包括顶部 MenuView 和 childViewControllers.如果之前设置过 `itemsMargins` 和 `itemsWidths` `values` 以及 `keys` 属性，请确保在调用 reload 之前也同时更新了这些属性。并且，最最最重要的，注意数组的个数以防止溢出。
 */
- (void)reloadData;

/**
 * Update designated item's title
  更新指定序号的控制器的标题
 *
 * @param title 新的标题
 * @param index 目标序号
 */
- (void)updateTitle:(NSString *)title atIndex:(NSInteger)index;

/**
 * Update designated item's title and width
  更新指定序号的控制器的标题以及他的宽度
 *
 * @param title 新的标题
 * @param index 目标序号
 * @param width 对应item的新宽度
 */
- (void)updateTitle:(NSString *)title andWidth:(CGFloat)width atIndex:(NSInteger)index;

/** 当 app 即将进入后台接收到的通知 */
- (void)willResignActive:(NSNotification *)notification;
/** 当 app 即将回到前台接收到的通知 */
- (void)willEnterForeground:(NSNotification *)notification;

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