coding如何区分iphone ipod & ipad 的几种方法

UI_USER_INTERFACE_IDIOM
Returns the interface idiom supported by the current device.#define UI_USER_INTERFACE_IDIOM() \([[UIDevice currentDevice] respondsToSelector:@selector(userInterfaceIdiom)] ? \[[UIDevice currentDevice] userInterfaceIdiom] : \UIUserInterfaceIdiomPhone)
Return Value
UIUserInterfaceIdiomPhone if the device is an iPhone or iPod touch or UIUserInterfaceIdiomPad if the device is an iPad.

1）使用  UI_USER_INTERFACE_IDIOM() 进行区分  (ios 3.2 >=)  无法区分iphone和ipod

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

// <define your constants here>

} else {

//  <define your constants here>

}

区分目前UI_USER_INTERFACE_IDIOM()有2个返回值

UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad    //ipad

UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone    //ipad

2）使用 UIDevice.model 进行区分  (ios 2.0 >=)

NSString *deviceType = [UIDevice currentDevice].model;

if([deviceType isEqualToString:@"iPhone"]) {

//iPhone

}

else if([deviceType isEqualToString:@"iPod touch"]) {

//iPod Touch

}

else {

//iPad

}

3)使用系统的一个函数sysctlbyname 来获取设备名称

- (NSString *) platformString

{

size_t size;

sysctlbyname("hw.machine", NULL, &size, NULL, 0);

char *machine = malloc(size);

sysctlbyname("hw.machine", machine, &size, NULL, 0);

NSString *platform = [NSString stringWithUTF8String:machine];

free(machine);

if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 1G";

if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";

if ([platform isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";

if ([platform isEqualToString:@"iPhone3,1"])    return @"iPhone 4";

if ([platform isEqualToString:@"iPhone3,3"])    return @"Verizon iPhone 4";

if ([platform isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";

if ([platform isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";

if ([platform isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";

if ([platform isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";

if ([platform isEqualToString:@"iPad1,1"])      return @"iPad";

if ([platform isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";

if ([platform isEqualToString:@"iPad2,2"])      return @"iPad 2 (GSM)";

if ([platform isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";

if ([platform isEqualToString:@"i386"])         return @"Simulator";

return @"";

}