New image name for iPhone 5

Question

With the retina we make images with the @2x in the name. I see where the default image has to be default-568h@2x but this does not seem to be the case for other images. Like

Answer 1

You can also make category for this just make category as below .

UIImage+Retina4.h
#import 
#import 
 @interface UIImage (Retina4)
 @end

UIImage+Retina4.m
#import "UIImage+Retina4.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

And you can directly check using import this category as below where you wont to check 568 or normal image

imgvBackground.image=[UIImage imageNamed:@"bkground_bg"];//image name without extantion