iOS 适配暗黑模式

 

#import 
@interface UIColor (DarkColorChange)

/**
 * 十六进制字符串
 *
 * @param color 16进制色值  支持@“#123456”、 @“0X123456”、 @“123456”三种格式
 *
 */
+ (UIColor *)colorWithHexString:(NSString *)color;


/**
 * 十六进制字符串 透明度
 *
 * @param color 16进制色值  支持@“#123456”、 @“0X123456”、 @“123456”三种格式
 * @param alpha 透明度
 *
 */
+ (UIColor *)colorWithHexString:(NSString *)color alpha:(CGFloat)alpha;


/**
 * 适配暗黑模式颜色   传入的UIColor对象
 *
 * @param lightColor 普通模式颜色
 * @param darkColor 暗黑模式颜色
 *
 */
+ (UIColor *)colorWithLightColor:(UIColor *)lightColor DarkColor:(UIColor *)darkColor;


/**
 * 适配暗黑模式颜色   颜色传入的是16进制字符串
 *
 * @param lightColor 普通模式颜色
 * @param darkColor 暗黑模式颜色
 *
 */
+ (UIColor *)colorWithLightColorStr:(NSString *)lightColor DarkColor:(NSString *)darkColor;

/**
 * 适配暗黑模式颜色   颜色传入的是16进制字符串 还有颜色的透明度
 *
 * @param lightColor 普通模式颜色
 * @param lightAlpha 普通模式颜色透明度
 * @param darkColor 暗黑模式颜色透明度
 * @param darkAlpha 暗黑模式颜色
 *
 */
+ (UIColor *)colorWithLightColorStr:(NSString *)lightColor WithLightColorAlpha:(CGFloat)lightAlpha DarkColor:(NSString *)darkColor WithDarkColorAlpha:(CGFloat)darkAlpha;

@end

 

#import "UIColor+DarkColorChange.h"

@implementation UIColor (DarkColorChange)

/**
 * 十六进制字符串
 *
 */
+ (UIColor *)colorWithHexString:(NSString *)color{
    
    return [self colorWithHexString:color alpha:1.0f];
}


/**
 * 十六进制字符串 透明度
 *
 */
+ (UIColor *)colorWithHexString:(NSString *)color alpha:(CGFloat)alpha{
    //删除字符串中的空格
    NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    // String should be 6 or 8 characters
    if ([cString length] < 6){
        return [UIColor clearColor];
    }
    
    // strip 0X if it appears
    //如果是0x开头的，那么截取字符串，字符串从索引为2的位置开始，一直到末尾
    if ([cString hasPrefix:@"0X"]){
        cString = [cString substringFromIndex:2];
    }
    
    //如果是#开头的，那么截取字符串，字符串从索引为1的位置开始，一直到末尾
    if ([cString hasPrefix:@"#"]){
        cString = [cString substringFromIndex:1];
    }
    if ([cString length] != 6){
        return [UIColor clearColor];
    }
    
    // Separate into r, g, b substrings
    NSRange range;
    range.location = 0;
    range.length = 2;
    //r
    NSString *rString = [cString substringWithRange:range];
    //g
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    //b
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    
    // Scan values
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    return [UIColor colorWithRed:((float)r / 255.0f) green:((float)g / 255.0f) blue:((float)b / 255.0f) alpha:alpha];
}


/**
 * 适配暗黑模式颜色   传入的UIColor对象
 *
 */
+ (UIColor *)colorWithLightColor:(UIColor *)lightColor DarkColor:(UIColor *)darkColor
{
    if (@available(iOS 13.0, *)) {
        return [UIColor colorWithDynamicProvider:^UIColor * _Nonnull(UITraitCollection * _Nonnull trainCollection) {
            if ([trainCollection userInterfaceStyle] == UIUserInterfaceStyleLight) {
                return lightColor;
            } else {
                return darkColor;
            }
        }];
    } else {
        return lightColor ? lightColor : (darkColor ? darkColor : [UIColor clearColor]);
    }
}


/**
 * 适配暗黑模式颜色   颜色传入的是16进制字符串
 */
+ (UIColor *)colorWithLightColorStr:(NSString *)lightColor DarkColor:(NSString *)darkColor
{
    return [UIColor colorWithLightColor:[UIColor colorWithHexString:lightColor] DarkColor:[UIColor colorWithHexString:darkColor]];
}

/**
 * 适配暗黑模式颜色   颜色传入的是16进制字符串 还有颜色的透明度
 *
 */
+ (UIColor *)colorWithLightColorStr:(NSString *)lightColor WithLightColorAlpha:(CGFloat)lightAlpha DarkColor:(NSString *)darkColor WithDarkColorAlpha:(CGFloat)darkAlpha
{
    return [UIColor colorWithLightColor:[UIColor colorWithHexString:lightColor alpha:lightAlpha] DarkColor:[UIColor colorWithHexString:darkColor alpha:darkAlpha]];
}


@end