android ios 夜间模式切换,iOS-夜间模式(换肤设置)

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!

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:

夜间模式.gif

Demo 下载请移步: 夜间模式(换肤设置)