Question

我一直在寻找这个问题一段时间没有成功。我的问题是：是否有一种简单的方法可以在我的应用程序目录中的.plist文件中存储和获取[UIColor blackColor]或[UIColor colorWithRed:0.38 green:0.757 blue:1 alpha:1];等UIColors？

Answer 1

根据this discussion，您有两种选择：

将其存储为.plist文件的数据字段中的NSData
将其存储为String UIColor表示

NSData选项

NSData *theData = [NSKeyedArchiver archivedDataWithRootObject:[UIColor greenColor]];

NSString选项

NSString *color = @"greenColor";
[UIColor performSelector:NSSelectorFromString(color)]

在此处阅读更多内容：http://www.iphonedevsdk.com/forum/iphone-sdk-development/27335-setting-uicolor-plist.html

Answer 2

如果你想保持人类的可读性，我为此做了一个类别：

@implementation UIColor (EPPZRepresenter)


NSString *NSStringFromUIColor(UIColor *color)
{
    const CGFloat *components = CGColorGetComponents(color.CGColor);
    return [NSString stringWithFormat:@"[%f, %f, %f, %f]",
            components[0],
            components[1],
            components[2],
            components[3]];
}

UIColor *UIColorFromNSString(NSString *string)
{
    NSString *componentsString = [[string stringByReplacingOccurrencesOfString:@"[" withString:@""] stringByReplacingOccurrencesOfString:@"]" withString:@""];
    NSArray *components = [componentsString componentsSeparatedByString:@", "];
    return [UIColor colorWithRed:[(NSString*)components[0] floatValue]
                           green:[(NSString*)components[1] floatValue]
                            blue:[(NSString*)components[2] floatValue]
                           alpha:[(NSString*)components[3] floatValue]];
}


@end

NSStringFromCGAffineTransform使用的格式相同。这实际上是[GitHub] [eppz！kit] [1]中更大规模的plist对象代表的一部分。

Answer 3

Objective-c中最好的可读方法是将其保存为十六进制字符串，例如：“＃1A93A8”，然后通过extern方法获取它；

.h文件中的

：

extern UIColor *colorFromHEX(NSString *hex);
extern NSString *HEXFromColor(UIColor *color);

.m文件中的

UIColor *colorFromHEX(NSString *hex){
    NSString *stringColor = hex;
    int red, green, blue;
    sscanf([stringColor UTF8String], "#%02X%02X%02X", &red, &green, &blue);

    UIColor *color = [UIColor colorWithRed:red/255.0 green:green/255.0 blue:blue/255.0 alpha:1];
    return color;
}


NSString *HEXFromColor(UIColor *color){
    const CGFloat *components = CGColorGetComponents(color.CGColor);
    size_t count = CGColorGetNumberOfComponents(color.CGColor);

    if(count == 2){
        return [NSString stringWithFormat:@"#%02lX%02lX%02lX",
                lroundf(components[0] * 255.0),
                lroundf(components[0] * 255.0),
                lroundf(components[0] * 255.0)];
    }else{
        return [NSString stringWithFormat:@"#%02lX%02lX%02lX",
                lroundf(components[0] * 255.0),
                lroundf(components[1] * 255.0),
                lroundf(components[2] * 255.0)];
    }
}

在任何地方

NSDictionary *Config = [[NSDictionary alloc] initWithContentsOfFile:[NSBundle.mainBundle pathForResource:@"Config" ofType:@"plist"]];

UIColor *color = colorFromHEX( Config[@"color"] );
NSString *strColor = HEXFromColor( UIColor.blackColor );

从.plist文件存储并获取UIColor

3 个答案: