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16进制颜色与UIColor互转
效果图:
代码:
- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view. UIView *view=[[UIView alloc]initWithFrame:CGRectMake(50, 100, 200, 200)]; view.backgroundColor=[self colorWithHexString:@"e26562"]; [self.view addSubview:view]; }//16进制颜色#e26562与UIColor互转,设置View背景颜色- (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];}
16进制颜色与UIColor互转
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