android ios 夜间模式切换,iOS-夜间模式(换肤设置)-优快云博客

iOS 开发中有时候会有夜间模式(换肤设置)的需求, 其实主要是更改相关颜色操作!

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思路:每次切换夜间/白天模式时，都会发出通知给所有ViewController，让它们切换到相应的主题。创建一个管理模式主题的单例管理类ThemeManage封装好需要做夜间模式变色处理的控件扩展:UIView (ThemeChange), UINavigationBar (ThemeChange), UITabBar (ThemeChange), UILabel (ThemeChange), UIButton (ThemeChange)

在 AppDelegate里先获取夜间模式状态, 根控制器里先设置tabBar 及子控制器里navigationBar的夜间模式状态

添加控制白天/黑夜模式item,发通知切换相对应i模式及image

添加相关控件是否黑夜模式下已更换字色和背景色

一. 创建一个管理模式主题的单例管理类ThemeManage

ThemeManage.h 文件:#import #import @interface ThemeManage : NSObject#pragma mark - 颜色属性@property(nonatomic, retain) UIColor *bgColor;@property(nonatomic, retain) UIColor *color1;@property(nonatomic, retain) UIColor *color2;@property(nonatomic, retain) UIColor *textColor;@property(nonatomic, retain) UIColor *textColorGray;@property(nonatomic, retain) UIColor *navBarColor;@property(nonatomic, retain) UIColor *colorClear;#pragma mark -// 是否是夜间 YES表示夜间, NO为正常@property(nonatomic, assign) BOOL isNight;/**

* 模式管理单例

*/+ (ThemeManage *)shareThemeManage;@end

ThemeManage. m 文件#import "ThemeManage.h"static ThemeManage *themeManage; // 单例@implementation ThemeManage#pragma mark - 单例的初始化+ (ThemeManage *)shareThemeManage {

static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{

themeManage = [[ThemeManage alloc] init];

}); return themeManage;

}#pragma mark 重写isNight的set方法- (void)setIsNight:(BOOL)isNight {

_isNight = isNight;

if (self.isNight) { // 夜间模式改变相关颜色

self.bgColor = [UIColor colorWithRed:0.06 green:0.08 blue:0.1 alpha:1]; self.textColor = [UIColor whiteColor]; self.color1 = [UIColor colorWithRed:0.08 green:0.11 blue:0.13 alpha:1]; self.navBarColor = [UIColor whiteColor]; self.color2 = [UIColor colorWithRed:0.2 green:0.31 blue:0.43 alpha:1]; self.textColorGray = [UIColor whiteColor];

} else{

self.bgColor = [UIColor whiteColor]; self.textColor = [UIColor blackColor]; self.color1 = [UIColor colorWithRed:0.06 green:0.25 blue:0.48 alpha:1]; self.navBarColor = [UIColor colorWithRed:0.31 green:0.73 blue:0.58 alpha:1]; self.color2 = [UIColor colorWithRed:0.57 green:0.66 blue:0.77 alpha:1]; self.textColorGray = [UIColor grayColor];

}

static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ self.colorClear = [UIColor clearColor];

});

}@end

二. 封装好需要做夜间模式变色处理的控件扩展

一般需要UIView (ThemeChange), UINavigationBar (ThemeChange), UITabBar (ThemeChange), UILabel (ThemeChange), UIButton (ThemeChange);这里拿 UIView 做例子:#import /**

* 颜色状态枚举值颜色的定义(一个代表一套)

*/typedef NS_ENUM(NSInteger, UIViewColorType) { UIViewColorTypeNormal, // 白天白色, 夜间黑色

UIViewColorType1, // 白天蓝色, 夜间深灰

UIViewColorType2, // 白天浅蓝, 夜间浅蓝

UIViewColorTypeClear // 透明状态};@interface UIView (ThemeChange)// 定义颜色类型的属性, NSNumber类型@property(nonatomic, assign) id type;// 消息中心开始监听- (void)startMonitor;// 改变颜色的方法- (void)changeColor;// 设置颜色类型和对应颜色- (void)NightWithType:(UIViewColorType)type;// 设置字体颜色的方法- (void)initTextColor;@end#import "UIView+ThemeChange.h"#import "ThemeManage.h"// 添加runtime头文件#import @implementation UIView (ThemeChange)#pragma mark - 添加type的set,get方法- (void)setType:(id)type {

objc_setAssociatedObject(self, @selector(type), type, OBJC_ASSOCIATION_RETAIN_NONATOMIC);

}

- (id)type { return objc_getAssociatedObject(self, @selector(type));

}#pragma mark - 开始监听- (void)startMonitor {

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeColor) name:@"changeColor" object:nil];

}#pragma mark - 改变颜色- (void)changeColor { // type为NSNumber型, 变为NSInteger

switch ([self.type integerValue]) { case UIViewColorTypeNormal: self.backgroundColor = [ThemeManage shareThemeManage].bgColor; break; case UIViewColorType1: self.backgroundColor = [ThemeManage shareThemeManage].color1; break; case UIViewColorType2: self.backgroundColor = [ThemeManage shareThemeManage].color2; break; case UIViewColorTypeClear: self.backgroundColor = [ThemeManage shareThemeManage].colorClear; break;

default: break;

}

}#pragma mark - 设置颜色类型和对应颜色- (void)NightWithType:(UIViewColorType)type {

self.type = [NSNumber numberWithInteger:type];

[self changeColor];

[self startMonitor];

// 调用设置字体颜色的方法

[self initTextColor];

}#pragma mark - 改变字体颜色的方法, 空方法, 可以在子类中重写这个方法来改变颜色(例如:Label)- (void)initTextColor {

}@end

三. 在 AppDelegate里先获取夜间模式状态, 根控制器里先设置tabBar 及子控制器里navigationBar的夜间模式状态#import "ThemeManage.h"#import "UIView+ThemeChange.h"- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// 获取夜间模式状态

[ThemeManage shareThemeManage].isNight = [[NSUserDefaults standardUserDefaults] boolForKey:@"night"];

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; self.window.backgroundColor = [UIColor whiteColor];

[self.window makeKeyAndVisible];

RootViewController *rootVc = [[RootViewController alloc] init]; self.window.rootViewController = rootVc;

return YES;

}

RootViewController.m 文件:- (void)viewDidLoad {

[super viewDidLoad];

[self.view NightWithType:UIViewColorTypeNormal];

HomeViewController *vc = [[HomeViewController alloc] init]; UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:vc]; // 设置navigationBar的夜间模式状态

[nav.navigationBar NightWithType:UIViewColorTypeNormal];

vc.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"首页" image:[UIImage imageNamed:@"home"] tag:10];

SchemaViewController *secondVC = [[SchemaViewController alloc] init]; UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:secondVC]; // 设置navigationBar的夜间模式状态

[nav1.navigationBar NightWithType:UIViewColorTypeNormal];

secondVC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"菜单" image:[UIImage imageNamed:@"schema"] tag:11];

[self.tabBar NightWithType:UIViewColorTypeNormal]; self.viewControllers = @[nav, nav1]; self.tabBar.translucent = NO;

[[UINavigationBar appearance] setTranslucent:NO];

}

四. 添加控制白天/黑夜模式item,发通知切换相对应i模式及image.#import "ThemeManage.h"#import "UIView+ThemeChange.h"[self.view NightWithType:UIViewColorTypeNormal];

UIImage *barButtonImage = [ThemeManage shareThemeManage].isNight ? [UIImage imageNamed:@"night"] : [UIImage imageNamed:@"day"]; self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:barButtonImage style:UIBarButtonItemStylePlain target:self action:@selector(rightBarBtnAction:)];#pragma mark - Action点击动作事件// 切换夜间模式- (void)rightBarBtnAction:(UIBarButtonItem *)barButton {

[ThemeManage shareThemeManage].isNight = ![ThemeManage shareThemeManage].isNight;

[[NSNotificationCenter defaultCenter] postNotificationName:@"changeColor" object:nil];

[[NSUserDefaults standardUserDefaults] setBool:[ThemeManage shareThemeManage].isNight forKey:@"night"]; UIImage *barBtnImage = [ThemeManage shareThemeManage].isNight ? [UIImage imageNamed:@"night"] : [UIImage imageNamed:@"day"];

[barButton setImage:barBtnImage];

}

发了通知不要忘记移除监听- (void)dealloc { // 移除监听

[[NSNotificationCenter defaultCenter] removeObserver:self];

}

五. 添加相关控件是否黑夜模式下已更换字色和背景色#import "UILabel+ThemeChange.h"UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 200, 40)];

label.text = @"测试看看字色及背景色";

[label NightWithType:UIViewColorTypeNormal];

[label NightTextType:LabelColorGray];

[self.view addSubview:label];

这时候测试下, 看下效果:

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