IOS中十六进制的颜色转换为UIColor
IOS中十六进制的颜色转换为UIColor
来源 http://quding0308.iteye.com/blog/1743221
// UIColor+expanded.h #import <UIKit/UIKit.h> @interface UIColor (expanded) #pragma mark - 颜色转换 IOS中十六进制的颜色转换为UIColor + (UIColor*) colorWithHexString:(NSString*)color; @end
// UIColor+expanded.m
#import "UIColor+expanded.h"
@implementation UIColor (expanded)
#pragma mark - 颜色转换 IOS中十六进制的颜色转换为UIColor
+ (UIColor *) colorWithHexString: (NSString *)color
{
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
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
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:1.0f];
}
方法调用
segmentedControl.tintColor = [UIColor colorWithHexString:@"cecece"];
利用系统自带“数码测色计” 颜色复制快捷键 shift+command+space
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