IS_IPHONE_5 returns 0 even if it is running on iPhone5C

Question

I have used this code to detect if the device is iPhone 5 or not to set appropriate UI.

( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON )

However, it returns a 0 even if the app is running in iPhone 5c. I also referred to How to detect iPhone 5 (widescreen devices)? but still the updated code doesnt work. Please help.

Answer 1

Well, at first you do also recognize iPhone5S as iPhone 5, which is not the same. I would rather make use of the the device name, as your macros are expandable as much as you like.

#import <sys/utsname.h>
NSString* deviceName()
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *result = [NSString stringWithCString:systemInfo.machine
                                          encoding:NSUTF8StringEncoding];
    return result;
}

#define isIPhone5  [deviceName() rangeOfString:@"iPhone5,"].location != NSNotFound
#define isIPhone5S [deviceName() rangeOfString:@"iPhone6,"].location != NSNotFound

The list of the devices is here:

/*
 @"i386"      on the simulator
 @"iPod1,1"   on iPod Touch
 @"iPod2,1"   on iPod Touch Second Generation
 @"iPod3,1"   on iPod Touch Third Generation
 @"iPod4,1"   on iPod Touch Fourth Generation
 @"iPod5,1"   on iPod Touch Fifth Generation
 @"iPhone1,1" on iPhone
 @"iPhone1,2" on iPhone 3G
 @"iPhone2,1" on iPhone 3GS
 @"iPad1,1"   on iPad
 @"iPad2,1"   on iPad 2
 @"iPad3,1"   on 3rd Generation iPad
 @"iPad3,2":  on iPad 3(GSM+CDMA)
 @"iPad3,3":  on iPad 3(GSM)
 @"iPad3,4":  on iPad 4(WiFi)
 @"iPad3,5":  on iPad 4(GSM)
 @"iPad3,6":  on iPad 4(GSM+CDMA)
 @"iPhone3,1" on iPhone 4
 @"iPhone4,1" on iPhone 4S
 @"iPhone5,1" on iPhone 5
 @"iPad3,4"   on 4th Generation iPad
 @"iPad2,5"   on iPad Mini
 @"iPhone5,1" on iPhone 5(GSM)
 @"iPhone5,2" on iPhone 5(GSM+CDMA)
 @"iPhone5,3  on iPhone 5c(GSM)
 @"iPhone5,4" on iPhone 5c(GSM+CDMA)
 @"iPhone6,1" on iPhone 5s(GSM)
 @"iPhone6,2" on iPhone 5s(GSM+CDMA)
 */

My approach is related to the post here, but can be easily used in prefix header: Detect if the device is iPhone 5s

---

To make sure you can use this macro in each file, follow these steps: create a new file (lets call it "Helperfunctions")

The .h file contains the definition of the function, nothing else:

NSString* deviceName();

The .m file contains the given deviceName-code:

#import "Helperfunctions.h"
#import <sys/utsname.h>

NSString* deviceName()
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *result = [NSString stringWithCString:systemInfo.machine
                                          encoding:NSUTF8StringEncoding];
    return result;
}

In the precompiled header file you could add now the code (or to another file, you already imported in the .pch, so it looks like:

//
//  Prefix header
//
//  The contents of this file are implicitly included at the beginning of every source file.
//

#import <Availability.h>

#ifndef __IPHONE_5_0
#warning "This project uses features only available in iOS SDK 5.0 and later."
#endif

#ifdef __OBJC__
    #import <UIKit/UIKit.h>
    #import <Foundation/Foundation.h>

    #import "Helperfunctions.h"

    #define isIPhone5  [deviceName() rangeOfString:@"iPhone5,"].location != NSNotFound
    #define isIPhone5S [deviceName() rangeOfString:@"iPhone6,"].location != NSNotFound
#endif

Answer 2

Alternatively, if you wanted something similar to what you were already doing, why not just:

BOOL iPhone5 = [[ UIScreen mainScreen ] bounds ].size.height >= 568 ;

Answer 3

Does your app have an R4 Launch Image (if you’re using an asset catalog) or a Default-568h@2x.png launch image? If not, it will think it is running on a 3.5ʺ screen no matter what device it is actually running on.