[iOS基礎控件-6.12.1]QQ菜單管理UITabBarController控制器管理

2019-11-14 19:42:23

字體：大中小

來源：轉載

供稿：網(wǎng)友

A.需求

1.類似QQ、微信頂部或者底部的窗口轉換導航條

2.給每個頁面添加相應內容

B.UITabBarController

1.基本概念：

（1）內容高度

iOS7之前內容高度為：屏幕高度 - 狀態(tài)欄高度44 - 底部導航條高度49

iOS7及之后，內容高度為整個屏幕

2.使用代碼創(chuàng)建初始化

（1）創(chuàng)建一個UITabBarController

UITabBarController的使用步驟

初始化UITabBarController
設置UIWindow的rootViewController為UITabBarController
根據(jù)具體情況，通過addChildViewController方法添加對應個數(shù)的子控制器

（2）添加子控制器

UITabBarController添加控制器的方式有2種

添加單個子控制器

- (void)addChildViewController:(UIViewController *)childController;

設置子控制器數(shù)組

@PRoperty(nonatomic,copy) NSArray *viewControllers;

如果UITabBarController有N個子控制器，那么UITabBar內部就會有N個UITabBarButton作為子控件

如果UITabBarController有4個子控制器，那么UITabBar的結構大致如下圖所示

AppDelegate:

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 2     // Override point for customization after application launch. 3     4     // 設置window 5     self.window = [[UIWindow alloc] init]; 6     self.window.frame = [[UIScreen mainScreen] bounds]; 7     self.window.backgroundColor = [UIColor grayColor]; 8     [self.window makeKeyAndVisible]; 9    10    11     // 設置一個UITabBarController12     UITabBarController *tabBarController = [[UITabBarController alloc] init];13     self.window.rootViewController = tabBarController;14    15     // 添加子控制器16     UIViewController *c1 = [[UIViewController alloc] init];17     c1.view.backgroundColor = [UIColor redColor];18 //    [tabBarController addChildViewController:c1];19    20     UIViewController *c2 = [[UIViewController alloc] init];21     c2.view.backgroundColor = [UIColor blueColor];22 //    [tabBarController addChildViewController:c2];23    24     UIViewController *c3 = [[UIViewController alloc] init];25     c3.view.backgroundColor = [UIColor greenColor];26    27     tabBarController.viewControllers = @[c1,c2,c3];28    29    30     return YES;31 }

（3）設置導航條選項樣式

UITabBarButton里面顯示什么內容，由對應子控制器的tabBarItem屬性決定

UITabBarItem有以下屬性影響著UITabBarButton的內容
標題文字
@property(nonatomic,copy) NSString *title;

圖標
@property(nonatomic,retain) UIImage *image;

選中時的圖標
@property(nonatomic,retain) UIImage *selectedImage;

提醒數(shù)字

@property(nonatomic,copy) NSString *badgeValue;

AppDelegate:

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 2     // Override point for customization after application launch. 3     4     // 設置window 5     self.window = [[UIWindow alloc] init]; 6     self.window.frame = [[UIScreen mainScreen] bounds]; 7     self.window.backgroundColor = [UIColor grayColor]; 8     [self.window makeKeyAndVisible]; 9    10    11     // 設置一個UITabBarController12     UITabBarController *tabBarController = [[UITabBarController alloc] init];13     self.window.rootViewController = tabBarController;14    15     // 添加子控制器16     UIViewController *c1 = [[UIViewController alloc] init];17     c1.view.backgroundColor = [UIColor redColor];18     c1.tabBarItem.title = @"紅色";19 //    [tabBarController addChildViewController:c1];20    21     UIViewController *c2 = [[UIViewController alloc] init];22     c2.view.backgroundColor = [UIColor blueColor];23     c2.tabBarItem.title = @"藍色";24 //    [tabBarController addChildViewController:c2];25    26     UIViewController *c3 = [[UIViewController alloc] init];27     c3.view.backgroundColor = [UIColor greenColor];28     c3.tabBarItem.title = @"綠色";29    30     tabBarController.viewControllers = @[c1,c2,c3];31    32    33     return YES;34 }

3.使用storyboard創(chuàng)建初始化

（1）拖入UITabBarController

（2）拖入N個UIViewController待用

（3）按照順序連線，設置UITabBarController的子控制器

（4）設置子控制器的TabBarItem

out:

注意：Selected Image不設置，系統(tǒng)就會自動將原圖編程藍色作為 Selected Image

4.子控制器的生命周期

（1）單個子控制器的生命周期和普通的控制器生命周期一樣

 1 - (void)viewDidLoad { 2     [super viewDidLoad]; 3     NSLog(@"%@ - viewDidLoad", self.class); 4 } 5  6 - (void)viewWillAppear:(BOOL)animated { 7     [super viewWillAppear:animated]; 8     NSLog(@"%@ - viewWillAppear", self.class); 9 }10 11 - (void)viewDidAppear:(BOOL)animated {12     [super viewDidAppear:animated];13     NSLog(@"%@ - viewDidAppear", self.class);14 }15 16 - (void) viewWillDisappear:(BOOL)animated {17     [super viewWillDisappear:animated];18     NSLog(@"%@ - viewWillDisappear", self.class);19 }20 21 - (void)viewDidDisappear:(BOOL)animated {22     [super viewDidDisappear:animated];23     NSLog(@"%@ - viewDidDisappear", self.class);24 }25 26 27 - (void)didReceiveMemoryWarning {28     [super didReceiveMemoryWarning];29     NSLog(@"%@ - didReceiveMemoryWarning", self.class);30 }31 32 - (void)viewWillUnload {33     [super viewWillUnload];34     NSLog(@"%@ - viewWillUnload", self.class);35 }36 37 - (void)viewDidUnload {38     [super viewDidUnload];39     NSLog(@"%@ - viewDidUnload", self.class);40 }

（2）兩個子控制器切換的生命周期

a.出現(xiàn)第一個子控制器view

2014-12-27 21:11:44.338 UITabBarControllerByStoryboard[22567:590996] OneViewController - viewDidLoad
2014-12-27 21:11:44.340 UITabBarControllerByStoryboard[22567:590996] OneViewController - viewWillAppear

2014-12-27 21:11:44.407 UITabBarControllerByStoryboard[22567:590996] OneViewController - viewDidAppear

b.切換到第二個控制器view

2014-12-27 21:12:10.042 UITabBarControllerByStoryboard[22567:590996] TwoViewController - viewDidLoad
2014-12-27 21:12:10.042 UITabBarControllerByStoryboard[22567:590996] TwoViewController - viewWillAppear
2014-12-27 21:12:10.042 UITabBarControllerByStoryboard[22567:590996] OneViewController - viewWillDisappear
2014-12-27 21:12:10.054 UITabBarControllerByStoryboard[22567:590996] OneViewController - viewDidDisappear

2014-12-27 21:12:10.055 UITabBarControllerByStoryboard[22567:590996] TwoViewController - viewDidAppear

C.App框架

在每個子控制器之前再包裝上一個NavigationController