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添加随机颜色函数 #5

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添加随机颜色函数 #5

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3 changes: 3 additions & 0 deletions ColorUtils/ColorUtils.h
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,9 @@
- (instancetype)colorWithBrightness:(CGFloat)brightness;
- (instancetype)colorBlendedWithColor:(UIColor *)color factor:(CGFloat)factor;

+ (instancetype)randomColor;
+ (instancetype)randomColorWithAlpha:(CGFloat)alpha;

@end


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18 changes: 18 additions & 0 deletions ColorUtils/ColorUtils.m
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -385,4 +385,22 @@ - (instancetype)colorBlendedWithColor:(UIColor *)color factor:(CGFloat)factor
alpha:fromRGBA[3] + (toRGBA[3] - fromRGBA[3]) * factor];
}

+ (instancetype)randomColor
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
srandom((unsigned int)time(NULL));
});

return [UIColor colorWithRed:random()%256/255.0
green:random()%256/255.0
blue:random()%256/255.0
alpha:1];
}

+ (instancetype)randomColorWithAlpha:(CGFloat)alpha
{
return [[UIColor randomColor] colorWithAlphaComponent:alpha];
}

@end