iOS開發之WMPageController的使用
這一篇記錄的是iOS開發中第三方庫WMPageController控制項的使用方法,WMPageController類似於Android平台上的ViewPager控制項,主要是用來分頁顯示內容的,可以通過手勢滑動來切換頁面,也可以通過點擊標題部分來切換頁面,如所示:
WMPageController的git地址為:https://github.com/wangmchn/WMPageController
下面就記錄WMPageController控制項的使用方法:
(1)建立工程WMPageControllerTest,然後通過cocoapods引入WMPageController到項目中,Podfile檔案的內容如下:
platform:ios, '7.0'pod 'WMPageController', '~> 1.4.1'
(2)在ViewController.m檔案中加入以下代碼:
#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(50, 50, 100, 50)]; label.text = @"體育新聞"; [self.view addSubview:label];}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end
這裡我們僅僅只是在ViewController中加入了一個UILabel標籤
(3)再建立一個ViewController2繼承自UIViewController,並且在ViewController2.m檔案中加入以下代碼:
#import "ViewController2.h"@interface ViewController2 ()@end@implementation ViewController2- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(50, 50, 100, 50)]; label.text = @"娛樂新聞"; [self.view addSubview:label];}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end
(4)開啟AppDelegate.m檔案,在其中加入下面一個方法:
#pragma mark 返回一個WMPageController對象- (WMPageController *) getPages { //WMPageController中包含的頁面數組 NSArray *controllers = [NSArray arrayWithObjects:[ViewController class], [ViewController2 class], nil]; //WMPageController控制項的標題數組 NSArray *titles = [NSArray arrayWithObjects:@"體育新聞", @"娛樂新聞", nil]; //用上面兩個數組初始化WMPageController對象 WMPageController *pageController = [[WMPageController alloc] initWithViewControllerClasses:controllers andTheirTitles:titles]; //設定WMPageController每個標題的寬度 pageController.menuItemWidth = 100; //設定WMPageController標題列的高度 pageController.menuHeight = 35; //設定WMPageController選中的標題的顏色 pageController.titleColorSelected = [UIColor colorWithRed:200 green:0 blue:0 alpha:1]; return pageController;}
然後在AppDelegate.m的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法中,加入如下代碼:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. WMPageController *pageController = [self getPages]; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:pageController]; self.window.rootViewController = navController; return YES;}
上面的代碼建立了一個WMPageController對象,然後用它初始化了一個導覽列,最後將視窗的根視圖控制器設定為這個導覽列,然後我們就可以運行程式了,效果如:
上面是在代碼中使用WMPageController,根據github上提供的demo,WMPageController還可以在Storyboard中使用,下面說明如何在storyboard中使用WMPageController控制項:
(1)建立一個項目WMPageControllerTest2
(2)開啟Main.storyboard,然後選中ViewController視圖,給它添加一個導覽列,如所示:
(3)下面建立一個新的ViewController,取名為NewsViewController,並且在Main.storyboard中也拖入一個ViewController視圖,將該視圖設定為NewsViewController,然後將StoryboardID設定為“viewController”,如所示:
在新建立的ViewController視圖中加入一個UILabel標籤,如所示。
(4)開啟ViewController.h檔案,讓ViewController繼承自WMPageController,代碼如下所示:
#import #import "WMPageController.h"@interface ViewController : WMPageController#pragma mark 標題數組@property (strong, nonatomic) NSArray *titles;@end
(5)編輯ViewController.m檔案,代碼如下:
#import "ViewController.h"@interface ViewController ()@end@implementation ViewController#pragma mark 初始化代碼- (instancetype)initWithCoder:(NSCoder *)aDecoder { self = [super initWithCoder:aDecoder]; if(self) { self.menuHeight = 35; self.menuItemWidth = 100; self.menuViewStyle = WMMenuViewStyleLine; self.titles = [NSArray arrayWithObjects:@"娛樂新聞", @"體育新聞", nil]; } return self;}- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.}#pragma mark 返回index對應的標題- (NSString *)pageController:(WMPageController *)pageController titleAtIndex:(NSInteger)index { return [self.titles objectAtIndex:index];}#pragma mark 返回子頁面的個數- (NSInteger)numbersOfChildControllersInPageController:(WMPageController *)pageController { return [self.titles count];}#pragma mark 返回某個index對應的頁面,該頁面從Storyboard中擷取- (UIViewController *)pageController:(WMPageController *)pageController viewControllerAtIndex:(NSInteger)index { UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; UIViewController *controller = [storyboard instantiateViewControllerWithIdentifier:@"viewController"]; //這裡的identifer是我們之前設定的StoryboardID return controller;}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end
到這裡就可以運行程式了,效果如:
需要注意的是,WMPageController的標題部分有幾個樣式可以選擇,樣式的枚舉值如下:
typedef NS_ENUM(NSUInteger, WMMenuViewStyle) { WMMenuViewStyleDefault, // 預設 WMMenuViewStyleLine, // 帶底線 (若要選中字型大小不變,設定選中和非選中大小一樣即可) WMMenuViewStyleFoold, // 湧入效果 (填充) WMMenuViewStyleFooldHollow, // 湧入效果 (空心的)};