通常UI给我们的色值都是16进制，我们需要进行转换
#import@interface UIColor (NSString)
/**
* 16进制字符串转颜色
*
* @param hexColor 16进制字符串
*
* @return 返回颜色
*/
+ (UIColor *)getColor:(NSString *)hexColor;
@end
实现：
#pragma -mark GetColor//解析16进制的颜色
+ (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 RGBACOLOR(red, green, blue, 1.0);
}
