如何使用xcode 5检测运行ios8的设备

Question

我需要检测IOS8上运行的iphone 5和iphone 6。我使用下面的代码，但这只适用于ios7。如何更改此功能才能在ios8上运行？我有权访问xcode 5，无法升级到xcode 6.

- (BOOL)isCurrentDeviceiPhone5{

    BOOL value = NO;


    printf("\nDetected Resolution : %d x %d\n\n",(int)[[UIScreen mainScreen] bounds].size.width,(int)[[UIScreen mainScreen] bounds].size.height);
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){
        if ([[UIScreen mainScreen] respondsToSelector: @selector(scale)])
        {
            CGSize result = [[UIScreen mainScreen] bounds].size;
            CGFloat scale = [UIScreen mainScreen].scale;
            result = CGSizeMake(result.width * scale, result.height * scale);
            if(result.height == 960 || result.height == 480){
                value = NO;

            }else if(result.height == 1136){
                value  =YES;

            }
        }
    }else{
        printf("Device Type : iPad");
        value = NO;

    }