Oct 23
iOS/iPhone/iPad, Projects, Upgrades/Hacks No Comments
Let’s start with a quick video of it in action:
This was an easy fix. Go to K & J Magnetics, Inc. and get yourself a thin little neodymium rare earth magnet. By, “thin,” I mean thinner than the cover of your DODOcase. The one I used in this upgrade was salvaged from a little laptop hard drive head servo thingy. More
Oct 15
iOS/iPhone/iPad, Objective-C/Apple Development, Programming/Computer cocoa, code, ipad, iphone, mac, objective-c, programming, software 2 Comments
Until I find a home for my little snippets of code, here is where they will go.
While building an iOS (iPhone) application, I needed a quick little method in Objective-c that would take strings of color codes from data provided by web developer peeps and convert those string values into UIColor objects. For instance, sometimes we’d get “#ff7401″ from the data for our app. Sometimes it might be formatted like, “0xff7401″ or even just, “ff7401″. I simply created a category on NSString to make is super-simple.
NSString+meltutils.h
// UIColor+meltutils.h // Created by Andy Frey on 10/15/10. #import <Foundation/Foundation.h> @interface NSString (meltutils) - (UIColor *)toUIColor; @end
NSString+meltutils.m
RSS
#import "NSString+meltutils.h"
@implementation NSString (meltutils)
- (UIColor *)toUIColor {
unsigned int c;
if ([self characterAtIndex:0] == '#') {
[[NSScanner scannerWithString:[self substringFromIndex:1]] scanHexInt:&c];
} else {
[[NSScanner scannerWithString:self] scanHexInt:&c];
}
return [UIColor colorWithRed:((c & 0xff0000) >> 16)/255.0 green:((c & 0xff00) >> 8)/255.0 blue:(c & 0xff)/255.0 alpha:1.0];
}
@end
So, to use this, all you have to do is import the header file and send a message to your string that contains the color code:
#import "NSString+meltutils.h" ... UIColor *c = [@"#ff840a" toUIColor]; ...
Hope that helps someone out a little!