IOS_ Random获取随机颜色值

本群【ken_深圳】的第一次分享

来自Ken的独白：由于真正接触IOS就几个月，也木有什么存储箱，就拿以前刚学的是的一个自定义颜色类

.h 文件

#import <UIKit/UIKit.h>

//category for class of UIColor
@interface UIColor(Random)

//create random color
+ (UIColor *)randomColor;//随机颜色

+ (UIColor *) getColor: (NSString *) hexColor;//获得颜色

@end

.m文件

#import "UIColor_Random.h"

@implementation UIColor(Random)


//create random color
+ (UIColor *)randomColor {
	static BOOL seeded = NO;
	if (!seeded) {
		seeded = YES;		
        (time(NULL));
	}
	CGFloat red = (CGFloat)random() / (CGFloat)RAND_MAX;
	CGFloat green = (CGFloat)random() / (CGFloat)RAND_MAX;
	CGFloat blue = (CGFloat)random() / (CGFloat)RAND_MAX;
	return [UIColor colorWithRed:red green:green blue:blue alpha:1.0f];
}


+ (UIColor *) getColor: (NSString *) hexColor

{
	
	unsigned int red, green, blue;
	
	NSRange range;
	
	range.length = 2;
	
	range.location = 0;
	
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
	
	range.location = 2;
	
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
	
	range.location = 4;
	
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];
	
	return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green/255.0f) blue:(float)(blue/255.0f) alpha:0.35f];
	
}



@end

小编：

真是难为IOS兄了，不过写总结对自身是很有好处的，希望以后多多分享。