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：
ScreenShot.gif
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;
