本文实例为大家分享了iOS主题皮肤切换代码，供大家参考，具体内容如下

1. 主题皮肤功能切换介绍

主题切换就是根据用户设置不同的主题，来动态改变用户的界面，通常会改变navigationBar背景图片、tabBar背景图片、tabBar中的按钮的图片和选中的背景图片、navigationItem.title 标题的字体颜色、UI中其他元素控件

下载源代码地址： http://xiazai.jb51.net/201609/yuanma/ThemeSkinSetup(jb51.net).rar

2.项目目录结构及实现效果截图

3. 具体实现步骤

1.将image文件夹（group）和 Skins拖入到项目工程中的资源文件夹中

2.创建BaseViewController

3.配置theme.plist

4.事项项目所需的基本框架供能，并实现主题的tableView功能

5.创建主题管理器：ThemeManager

6.自定义ThemeTabBarItem 控件

7.创建UI工厂： UIFactory

8. 实现tableView中的didSelected事件完成主题切换

9.记录用户选择的主题，以便用户下次启动时是上次设置的主题

1.创建BaseViewController

#import <UIKit/UIKit.h> @interface BaseViewController : UIViewController - (void) reloadThemeImage; @end

#import "BaseViewController.h" #import "ThemeManager.h" #import "NotificationMacro.h" @interface BaseViewController () @end @implementation BaseViewController - (id) init { if (self == [super init]) { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(themeChangedNotfication:) name:kThemeChangedNotification object:nil]; } [self reloadThemeImage]; return self; } - (void)viewDidLoad { [super viewDidLoad]; [self reloadThemeImage]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void) themeChangedNotfication:(NSNotification *)notification { [self reloadThemeImage]; } - (void) reloadThemeImage { ThemeManager * themeManager = [ThemeManager sharedThemeManager]; UIImage * navigationBackgroundImage = [themeManager themeImageWithName:@"navigationbar_background.png"]; [self.navigationController.navigationBar setBackgroundImage:navigationBackgroundImage forBarMetrics:UIBarMetricsDefault]; UIImage * tabBarBackgroundImage = [themeManager themeImageWithName:@"tabbar_background.png"]; [self.tabBarController.tabBar setBackgroundImage:tabBarBackgroundImage]; } @end

2. 实现AppDelegate

#import "AppDelegate.h" #import "MainViewController.h" #import "ThemeManager.h" #import "NotificationMacro.h" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [self initUserDefaultConfig]; MainViewController * rootViewController = [[MainViewController alloc] init]; self.window.rootViewController = rootViewController; return YES; } - (void) initUserDefaultConfig { NSString * themeName = [[NSUserDefaults standardUserDefaults] objectForKey:kThemeNameKey]; ThemeManager * themeManager = [ThemeManager sharedThemeManager]; themeManager.themeName = themeName; }</span></span>

<span><span>#import "MainViewController.h" #import "HomeViewController.h" #import "MessageViewController.h" #import "MineViewController.h" #import "UIFactory.h" @interface MainViewController () @end @implementation MainViewController - (id) init { if (self = [super init]) { [self initTabBarUI]; } return self; } - (void)viewDidLoad { [super viewDidLoad]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } - (void) initTabBarUI { // 主页 HomeViewController * homeViewController = [[HomeViewController alloc] init]; UINavigationController * homeNavigationController = [[UINavigationController alloc] initWithRootViewController:homeViewController]; // UITabBarItem * homeTabBarItem = [[UITabBarItem alloc] initWithTitle:@"主页" image:[UIImage imageNamed:@"tabbar_home"] selectedImage:[UIImage imageNamed:@"tabbar_home_selected"]]; UITabBarItem * homeTabBarItem = [UIFactory createTabBarItemWithTitle:@"主页" imageName:@"tabbar_home" selectedImage:@"tabbar_home_selected"]; homeNavigationController.tabBarItem = homeTabBarItem; // 消息（中心） MessageViewController * messageViewController = [[MessageViewController alloc] init]; UINavigationController * messageNavigationController = [[UINavigationController alloc] initWithRootViewController:messageViewController]; // UITabBarItem * messageTabBarItem = [[UITabBarItem alloc] initWithTitle:@"消息" image:[UIImage imageNamed:@"tabbar_message_center"] selectedImage:[UIImage imageNamed:@"tabbar_message_center_selected"]]; UITabBarItem * messageTabBarItem = [UIFactory createTabBarItemWithTitle:@"消息" imageName:@"tabbar_message_center" selectedImage:@"tabbar_message_center_selected"]; messageNavigationController.tabBarItem = messageTabBarItem; // 我 MineViewController * mineViewController = [[MineViewController alloc] init]; UINavigationController * mineNavigationController = [[UINavigationController alloc] initWithRootViewController:mineViewController]; // UITabBarItem * mineTabBarItem = [[UITabBarItem alloc] initWithTitle:@"我" image:[UIImage imageNamed:@"tabbar_profile"] selectedImage:[UIImage imageNamed:@"tabbar_profile_selected"]]; UITabBarItem * mineTabBarItem = [UIFactory createTabBarItemWithTitle:@"我" imageName:@"tabbar_profile" selectedImage:@"tabbar_profile_selected"]; mineNavigationController.tabBarItem = mineTabBarItem; NSArray * viewControllers = @[homeNavigationController, messageNavigationController, mineNavigationController]; self.viewControllers = viewControllers; } @end

3. 创建主题管理器

#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface ThemeManager : NSObject @property (nonatomic, copy) NSString * themeName; // 主题名字 @property (nonatomic, retain) NSDictionary * themePlistDict; // 主题属性列表字典 + (ThemeManager *) sharedThemeManager; - (UIImage *) themeImageWithName:(NSString *)imageName; @end</span></span>

<span><span>#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface ThemeManager : NSObject @property (nonatomic, copy) NSString * themeName; // 主题名字 @property (nonatomic, retain) NSDictionary * themePlistDict; // 主题属性列表字典 + (ThemeManager *) sharedThemeManager; - (UIImage *) themeImageWithName:(NSString *)imageName; @end #import "ThemeManager.h" #import "NotificationMacro.h" static ThemeManager * sharedThemeManager; @implementation ThemeManager - (id) init { if(self = [super init]) { NSString * themePath = [[NSBundle mainBundle] pathForResource:@"theme" ofType:@"plist"]; self.themePlistDict = [NSDictionary dictionaryWithContentsOfFile:themePath]; self.themeName = nil; } return self; } + (ThemeManager *) sharedThemeManager { @synchronized(self) { if (nil == sharedThemeManager) { sharedThemeManager = [[ThemeManager alloc] init]; } } return sharedThemeManager; } // Override 重写themeName的set方法 - (void) setThemeName:(NSString *)themeName { _themeName = themeName; } - (UIImage *) themeImageWithName:(NSString *)imageName { if (imageName == nil) { return nil; } NSString * themePath = [self themePath]; NSString * themeImagePath = [themePath stringByAppendingPathComponent:imageName]; UIImage * themeImage = [UIImage imageWithContentsOfFile:themeImagePath]; return themeImage; } // 返回主题路径 - (NSString *)themePath { NSString * resourcePath = [[NSBundle mainBundle] resourcePath]; if (self.themeName == nil || [self.themeName isEqualToString:@""]) { return resourcePath; } NSString * themeSubPath = [self.themePlistDict objectForKey:self.themeName]; // Skins/blue NSString * themeFilePath = [resourcePath stringByAppendingPathComponent:themeSubPath]; // .../Skins/blue return themeFilePath; } @end

4. 创建主题按钮 ThemeTabBarItem

#import <UIKit/UIKit.h> @interface ThemeTabBarItem : UITabBarItem @property (nonatomic, copy) NSString * imageName; @property (nonatomic, copy) NSString * selectedImageName; - (id) initWithTitle:(NSString *)title imageName:(NSString *)imageName selectedImage:(NSString *)selectedImageName; @end </span></span>

<span><span>#import "ThemeTabBarItem.h" #import "ThemeManager.h" #import "NotificationMacro.h" @implementation ThemeTabBarItem // 初始化时注册观察者 - (id) init { if (self = [super init]) { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(themeChangedNotification:) name:kThemeChangedNotification object:nil]; } return self; } - (id) initWithTitle:(NSString *)title imageName:(NSString *)imageName selectedImage:(NSString *)selectedImageName { if (self = [self init]) { self.title = title; self.imageName = imageName; // 此时会调用[self setImageName:imageName] ---> [self reloadThemeImage] --->[self setImage:image] self.selectedImageName = selectedImageName;// 此时会调用[self setSelectedImageName:selectedImageName]; } return self; } #pragma mark - #pragma mark - Override Setter - (void) setImageName:(NSString *)imageName { if (_imageName != imageName) { _imageName = imageName; } [self reloadThemeImage]; } - (void) setSelectedImageName:(NSString *)selectedImageName { if (_selectedImageName != selectedImageName) { _selectedImageName = selectedImageName; } [self reloadThemeImage]; } // 主题改变之后重新加载图片 - (void)themeChangedNotification:(NSNotification *)notification { [self reloadThemeImage]; } - (void)reloadThemeImage { ThemeManager * themeManager = [ThemeManager sharedThemeManager]; if (self.imageName != nil) { UIImage * image = [themeManager themeImageWithName:self.imageName]; [self setImage:image]; } if (self.selectedImageName != nil) { UIImage * selectedImage = [themeManager themeImageWithName:self.selectedImageName]; [self setSelectedImage:selectedImage]; } } - (void) dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self]; }

5. 创建UI工厂

#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface UIFactory : NSObject + (UITabBarItem *) createTabBarItemWithTitle:(NSString *)title imageName:(NSString *)imageName selectedImage:(NSString *)selectedImageName; @end</span></span>

<span><span>#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface UIFactory : NSObject + (UITabBarItem *) createTabBarItemWithTitle:(NSString *)title imageName:(NSString *)imageName selectedImage:(NSString *)selectedImageName; @end #import "UIFactory.h" #import "ThemeTabBarItem.h" @implementation UIFactory + (UITabBarItem *) createTabBarItemWithTitle:(NSString *)title imageName:(NSString *)imageName selectedImage:(NSString *)selectedImageName { ThemeTabBarItem * themeTabBarItem = [[ThemeTabBarItem alloc] initWithTitle:title imageName:imageName selectedImage:selectedImageName]; return themeTabBarItem; } @end

6. 实现选中单元格的事件

#import "BaseViewController.h" @interface MineViewController : BaseViewController <UITableViewDelegate, UITableViewDataSource> @property (weak, nonatomic) IBOutlet UITableView *tableView; @property (nonatomic, retain) NSMutableArray * themeDataSource; @end

#import "BaseViewController.h" @interface MineViewController : BaseViewController <UITableViewDelegate, UITableViewDataSource> @property (weak, nonatomic) IBOutlet UITableView *tableView; @property (nonatomic, retain) NSMutableArray * themeDataSource; @end #import "MineViewController.h" #import "ThemeManager.h" #import "NotificationMacro.h" @interface MineViewController () @end @implementation MineViewController - (void)viewDidLoad { [super viewDidLoad]; self.title = @"我"; ThemeManager * themeManager = [ThemeManager sharedThemeManager]; _themeDataSource = [NSMutableArray arrayWithArray:themeManager.themePlistDict.allKeys]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } #pragma mark - #pragma mark - UITableViewDelegate - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return self.themeDataSource.count; } - (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString * Identifier = @"Cell"; UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:Identifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:Identifier]; } NSString * text = self.themeDataSource[indexPath.row]; cell.textLabel.text = text; ThemeManager * themeManager = [ThemeManager sharedThemeManager]; NSString * currentTheme = themeManager.themeName; if (currentTheme == nil) { currentTheme = @"默认"; } if ([currentTheme isEqualToString:text]) { cell.accessoryType = UITableViewCellAccessoryCheckmark; } else { cell.accessoryType = UITableViewCellAccessoryNone; } return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { ThemeManager * themeManager = [ThemeManager sharedThemeManager]; NSString * themeName = self.themeDataSource[indexPath.row]; if ([themeName isEqualToString:@"默认"]) { themeName = nil; } // 记录当前主题名字 themeManager.themeName = themeName; [[NSNotificationCenter defaultCenter] postNotificationName:kThemeChangedNotification object:nil]; // 主题持久化 NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults]; [userDefaults setObject:themeName forKey:kThemeNameKey]; [userDefaults synchronize]; // 重新加载数据显示UITableViewCellAccessoryCheckmark 显示选中的对号 v [self.tableView reloadData]; }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持查字典教程网。