16进制颜色#e26562与UIColor互转,设置View背景颜色

16进制颜色#e26562与UIColor互转,设置View背景颜色

 

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- (void)viewDidLoad {     [super viewDidLoad];     UIView *view=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 300)];     view.backgroundColor=[self colorWithHexString:@"e26562"];     [self.view addSubview:view]; } - (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]; }