[ 夜间模式 ] NightVersion

DKNightVersion框架、重写管理类 & 控件的分类！--可重写
{ 使用GCD、runtime、delegate等 & 工具类的创建 }

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1、管理类的头文件 NightVersionManager.h

 

定义宏，通过RGB获取颜色！

#define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

定义头文件.h

typedef enum : NSUInteger {
   DKThemeVersionNormal,
   DKThemeVersionNight,
} DKThemeVersion;

extern NSString *const DKNightVersionNightFallingNotification;
extern NSString *const DKNightVersionDawnComingNotification;

extern CGFloat const DKNightVersionAnimationDuration;

@interface DKNightVersionManager : NSObject
+ (DKThemeVersion)currentThemeVersion;
+ (void)nightFalling;
+ (void)dawnComing;
+ (BOOL)useDefaultNightColor;
+ (void)setUseDefaultNightColor:(BOOL)use;

2、核心代码 NightVersionManager.m

2.1 单例、保证工具类对象，只被分配一次内存

+ (DKNightVersionManager *)sharedNightVersionManager {
   static dispatch_once_t once;
   static DKNightVersionManager *instance;
   dispatch_once(&once, ^{
       instance = [self new];
       instance.useDefaultNightColor = YES;
   });
   return instance;
}

2.2 设置主题的版本

- (void)setThemeVersion:(DKThemeVersion)themeVersion {
   if (_themeVersion == themeVersion) {
       // if type does not change, don't execute code below to enhance performance.
       return;
   }
   _themeVersion = themeVersion;
   [self changeColor:[[UIApplication sharedApplication].delegate.window.subviews firstObject]];
}

2.3 改变颜色－－委托

- (void)changeColor:(id <DKNightVersionSwichColorProtocol>)object {
   if ([object respondsToSelector:@selector(changeColor)]) {
       [object changeColor];
   }
   if ([object respondsToSelector:@selector(subviews)]) {
       if (![object subviews]) {
           // Basic case, do nothing.
           return;
       } else {
           for (id subview in [object subviews]) {
               // recursice darken all the subviews of current view.
               [self changeColor:subview];
               if ([subview respondsToSelector:@selector(changeColor)]) {
                   [subview changeColor];
               }
           }
       }
   }
}

2.4 设置模式的颜色

+ (BOOL)useDefaultNightColor {
   return self.sharedNightVersionManager.useDefaultNightColor;
}

+ (void)setUseDefaultNightColor:(BOOL)use {
   [self.sharedNightVersionManager setUseDefaultNightColor:use];
}

3、控件分类（UIButton、UILabel、UIScrollView等）

3.1 UIButton+NightVersion.m

- (void)changeColor {
   
   [UIView animateWithDuration:DKNightVersionAnimationDuration animations:^{
       
       [self setTitleColor:([DKNightVersionManager currentThemeVersion] == DKThemeVersionNight) ? self.nightTitleColor : self.normalTitleColor forState:UIControlStateNormal];
       
       [self setBackgroundColor:([DKNightVersionManager currentThemeVersion] == DKThemeVersionNight) ? self.nightBackgroundColor : self.normalBackgroundColor];
       
       [self setTintColor:([DKNightVersionManager currentThemeVersion] == DKThemeVersionNight) ? self.nightTintColor : self.normalTintColor];
       
   }];
}

3.2 UIButton+TitleColor.m

> 加载时GCD，保证线程安全。

> runtime运行时，SEL & Method的使用。

+ (void)load {
   static dispatch_once_t onceToken;                                              
   dispatch_once(&onceToken, ^{                                                   
       Class class = [self class];                                                
       SEL originalSelector = @selector(setTitleColor:forState:);                                  
       SEL swizzledSelector = @selector(hook_setTitleColor:forState:);                                 
       Method originalMethod = class_getInstanceMethod(class, originalSelector);  
       Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);  
       BOOL didAddMethod =                                                        
       class_addMethod(class, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod));                   
       if (didAddMethod){
           class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));           
       } else {                                                                   
           method_exchangeImplementations(originalMethod, swizzledMethod);        
       }
   });
}

设置默认的标题颜色

- (UIColor *)defaultNightTitleColor {
   if ([self isMemberOfClass:[UIButton class]]) { 
       return UIColorFromRGB(0x5F80AC);
   } else {
       UIColor *resultColor = self.normalTitleColor ?: [UIColor clearColor];
       return resultColor;
   }
}

4、Test测试

4.1 AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
   // Override point for customization after application launch.
   self.window.backgroundColor = [UIColor whiteColor];
   [self.window makeKeyAndVisible];
   UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:[[RootViewController alloc] init]];
   self.window.rootViewController = navigation;
   return YES;
}

4.2 RootViewController.m

- (void)nightFalls {
   [DKNightVersionManager nightFalling];
}

- (void)dawnComes {
   [DKNightVersionManager dawnComing];
}

- (void)push {
   [self.navigationController pushViewController:[[SuccViewController alloc] init] animated:YES];
}

4.3 SuccViewController.m

- (void)viewDidLoad {
   [super viewDidLoad];
   self.view.backgroundColor = [UIColor whiteColor];
   self.view.nightBackgroundColor = [UIColor colorWithRed:0.141 green:0.145 blue:0.153 alpha:1.0];
}

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PS：

［ 每日一句 ］

" Smiling is the best reaction in all situations. "

［开源框架］

http://www.umeng.com/

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