判断手机分辨率和系统版本号

#define isiPhone3 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(320, 480), [[UIScreen mainScreen] currentMode].size) : NO)

#define isiPhone4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)

#define isiPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

#define isiPhone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)

#define isiPhone6p ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208), [[UIScreen mainScreen] currentMode].size) : NO)

 

#define isIOS7After ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0f)

#define isIOS8After ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0f) 

 

#define screenHeight [[UIScreen mainScreen] bounds].size.height

#define screenWidth [[UIScreen mainScreen] bounds].size.width 

 

- (void)viewDidLoad {

    [super viewDidLoad];

    if (isiPhone4) {

        NSLog(@"This is iPhone4");

    }else if (isiPhone5){

        NSLog(@"This is iPhone5");

    }else if (isiPhone6){

        NSLog(@"This is iPhone6");

    }else if (isiPhone6p){

        NSLog(@"This is iPhone6p");

    }else if (isiPhone3){

        NSLog(@"This is iPhone3");

    }

 

}