iOS 常用的判断

1.1判断设备类型（iphone、ipod、ipad）

 NSString* deviceType = [UIDevice currentDevice].model;  
    NSLog(@"deviceType = %@", deviceType);  //@"iphone"/@"ipod"/@"ipad"
      
    NSRange range = [deviceType rangeOfString:name];  
    return range.location != NSNotFound;