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Swizzled UIImage imageNamed for iPhone 5
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// | |
// UIImage+Retina4.h | |
// StunOMatic | |
// | |
// Created by Benjamin Stahlhood on 9/12/12. | |
// Copyright (c) 2012 DS Media Labs. All rights reserved. | |
// | |
#import <UIKit/UIKit.h> | |
@interface UIImage (Retina4) | |
@end |
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// | |
// UIImage+Retina4.m | |
// StunOMatic | |
// | |
// Created by Benjamin Stahlhood on 9/12/12. | |
// Copyright (c) 2012 DS Media Labs. All rights reserved. | |
// | |
#import "UIImage+Retina4.h" | |
#import <objc/objc-runtime.h> | |
static Method origImageNamedMethod = nil; | |
@implementation UIImage (Retina4) | |
+ (void)initialize { | |
origImageNamedMethod = class_getClassMethod(self, @selector(imageNamed:)); | |
method_exchangeImplementations(origImageNamedMethod, | |
class_getClassMethod(self, @selector(retina4ImageNamed:))); | |
} | |
+ (UIImage *)retina4ImageNamed:(NSString *)imageName { | |
NSLog(@"Loading image named => %@", imageName); | |
NSMutableString *imageNameMutable = [imageName mutableCopy]; | |
NSRange retinaAtSymbol = [imageName rangeOfString:@"@"]; | |
if (retinaAtSymbol.location != NSNotFound) { | |
[imageNameMutable insertString:@"-568h" atIndex:retinaAtSymbol.location]; | |
} else { | |
CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height; | |
if ([UIScreen mainScreen].scale == 2.f && screenHeight == 568.0f) { | |
NSRange dot = [imageName rangeOfString:@"."]; | |
if (dot.location != NSNotFound) { | |
[imageNameMutable insertString:@"-568h@2x" atIndex:dot.location]; | |
} else { | |
[imageNameMutable appendString:@"-568h@2x"]; | |
} | |
} | |
} | |
NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageNameMutable ofType:@"png"]; | |
if (imagePath) { | |
return [UIImage retina4ImageNamed:imageNameMutable]; | |
} else { | |
return [UIImage retina4ImageNamed:imageName]; | |
} | |
return nil; | |
} | |
@end |
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// | |
// UIImage+FullScreen+FullScreen.h | |
// StunOMatic | |
// | |
// Created by Benjamin Stahlhood on 9/12/12. | |
// Modified by bromanko on 9/26/12 | |
// Copyright (c) 2012 DS Media Labs. All rights reserved. | |
// | |
@interface UIImage (FullScreen) | |
@end |
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// | |
// UIImage+FullScreen+FullScreen.m | |
// StunOMatic | |
// | |
// Created by Benjamin Stahlhood on 9/12/12. | |
// Modified by bromanko on 9/25/12 | |
// Copyright (c) 2012 DS Media Labs. All rights reserved. | |
// | |
#import <objc/runtime.h> | |
static Method origImageNamedMethod = nil; | |
@implementation UIImage (FullScreen) | |
+ (void)load { | |
if ([UIScreen mainScreen].scale == 2.f && [UIScreen mainScreen].bounds.size.height == 568.0f) { | |
origImageNamedMethod = class_getClassMethod(self, @selector(imageNamed:)); | |
method_exchangeImplementations(origImageNamedMethod, class_getClassMethod(self, @selector(fullScreenImageNamed:))); | |
} | |
} | |
+ (UIImage *)fullScreenImageNamed:(NSString *)imageName { | |
NSMutableString *imageNameMutable = [imageName mutableCopy]; | |
NSRange retinaAtSymbol = [imageName rangeOfString:@"@"]; | |
if (retinaAtSymbol.location != NSNotFound) { | |
[imageNameMutable insertString:@"-568h" atIndex:retinaAtSymbol.location]; | |
} else { | |
NSRange dot = [imageName rangeOfString:@"." options:NSBackwardsSearch]; | |
if (dot.location != NSNotFound) { | |
[imageNameMutable insertString:@"-568h@2x" atIndex:dot.location]; | |
} else { | |
[imageNameMutable appendString:@"-568h@2x"]; | |
} | |
} | |
// remove extension | |
NSRange dot = [imageNameMutable rangeOfString:@"." options:NSBackwardsSearch]; | |
NSString *extension = @"png"; | |
if (dot.location != NSNotFound) { | |
NSRange range; | |
range.location = dot.location; | |
range.length = imageNameMutable.length - range.location; | |
NSRange extensionRange = range; | |
extensionRange.location += 1; | |
extensionRange.length -= 1; | |
extension = [imageNameMutable substringWithRange:extensionRange]; | |
[imageNameMutable deleteCharactersInRange:range]; | |
} | |
// get path | |
NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageNameMutable ofType:extension]; | |
NSString *imageNameWithout2x = [imageNameMutable stringByReplacingOccurrencesOfString:@"@2x" withString:@""]; | |
if (imagePath) { | |
return [UIImage fullScreenImageNamed:imageNameWithout2x]; | |
} else { | |
return [UIImage fullScreenImageNamed:imageName]; | |
} | |
} | |
@end |
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This fork fixes the issue where images are rendered at 2x resolution. The problem is that the original would call [UIImage imageNamed:] with a filename that includes "@2x".
@waynehartman noticed this issue and commented that you can create a new image and set the scale manually but I preferred to correct this without generating a new image.