如何判断 ios设备的类型（iphone，ipod，ipad）

实现函数：

-(bool)checkDevice:(NSString*)name
{
NSString* deviceType = [UIDevice currentDevice].model;
NSLog(@"deviceType = %@", deviceType);

NSRange range = [deviceType rangeOfString:name];
return range.location != NSNotFound;
}

调用：
NSString * nsStrIphone=@"iPhone";
NSString * nsStrIpod=@"iPod";
NSString * nsStrIpad=@"iPad";
bool bIsiPhone=false;
bool bIsiPod=false;
bool bIsiPad=false;
bIsiPhone=[self checkDevice:nsStrIphone];
bIsiPod=[self checkDevice:nsStrIpod];
bIsiPad=[self checkDevice:nsStrIpad];