uidevice extension工程解读（读取设备信息）

工程可以从https://github.com/erica/uidevice-extension下载，主要用于读取各种平台（iPhone、iPad、模拟器）下设备的信息。

工程截图：

main.m函数

/*
 Erica Sadun, http://ericasadun.com
 iPhone Developer's Cookbook, 3.0 Edition
 BSD License, Use at your own risk
 */

#import <UIKit/UIKit.h>
#import "UIDevice-Reachability.h"
#import "UIDevice-IOKitExtensions.h"
#import "UIDevice-Hardware.h"
#import "UIDevice-Capabilities.h"
#import "UIDevice-Orientation.h"

#define COOKBOOK_PURPLE_COLOR    [UIColor colorWithRed:0.20392f green:0.19607f blue:0.61176f alpha:1.0f]
#define BARBUTTON(TITLE, SELECTOR)     [[[UIBarButtonItem alloc] initWithTitle:TITLE style:UIBarButtonItemStylePlain target:self action:SELECTOR] autorelease]
#define CFN(X) [self commasForNumber:X]

@interface TestBedViewController : UIViewController
{
    NSMutableString *log;
    IBOutlet UITextView *textView;
}
@property (retain) NSMutableString *log;
@property (retain) UITextView *textView;
@end

@implementation TestBedViewController
@synthesize log;
@synthesize textView;


//输出log日志
- (void) doLog: (NSString *) formatstring, ...
{
    va_list arglist;
    if (!formatstring) return;
    va_start(arglist, formatstring);
    NSString *outstring = [[[NSString alloc] initWithFormat:formatstring arguments:arglist] autorelease];
    va_end(arglist);
    
    NSLog(@"%@", outstring);
    
    [self.log appendString:outstring];
    [self.log appendString:@"\n"];
    self.textView.text = self.log;
}

- (NSString *) commasForNumber: (long long) num
{
    if (num < 1000) return [NSString stringWithFormat:@"%d", num];
    return    [[self commasForNumber:num/1000] stringByAppendingFormat:@",%03d", (num % 1000)];
}

- (void) action: (UIBarButtonItem *) bbi
{
    self.log = [NSMutableString string];
    [[UIDevice currentDevice] scanCapabilities];
    
    // [self doLog:@"Adjusted Orientation Angle: %f\n", [[UIDevice currentDevice] orientationAngleRelativeToOrientation:UIDeviceOrientationLandscapeLeft]];
    
    // TESTING REACHABILITY    测试网络
    /*
    [self doLog:@"Host Name: %@", [[UIDevice currentDevice] hostname]]; //主机名
    [self doLog:@"Local IP Addy: %@", [[UIDevice currentDevice] localIPAddress]];//主机IP
    [self doLog:@"  Google IP Addy: %@", [[UIDevice currentDevice] getIPAddressForHost:@"www.google.com"]];
    [self doLog:@"  Amazon IP Addy: %@", [[UIDevice currentDevice] getIPAddressForHost:@"www.amazon.com"]];
    [self doLog:@"Local WiFI Addy: %@", [[UIDevice currentDevice] localWiFiIPAddress]]; //本机的wifi地址
    if ([[UIDevice currentDevice] networkAvailable])
        [self doLog:@"What is My IP: %@", [[UIDevice currentDevice] whatismyipdotcom]];
     */
    
    // TESTING IOKIT  设备的imei和序列号
    /*
    [self doLog:[[UIDevice currentDevice] imei]];
    [self doLog:[[UIDevice currentDevice] serialnumber]];
     */
    
    // TESTING DEVICE HARDWARE   测试平台硬件
    [self doLog:@"Platform: %@", [[UIDevice currentDevice] platform]];//平台
    [self doLog:@"Platform String: %@", [[UIDevice currentDevice] platformString]];//平台名称
    [self doLog:@"Mac: %@", [[UIDevice currentDevice] macaddress]];//设备的mac地址

    /*
    [self doLog:@"Device is%@ portrait", [UIDevice currentDevice].isPortrait ? @"" : @" not"];
    [self doLog:@"Orientation: %@", [UIDevice currentDevice].orientationString];
    [self doLog:@"Platform: %@", [[UIDevice currentDevice] platform]];
    [self doLog:@"Platform String: %@", [[UIDevice currentDevice] platformString]];
    [self doLog:@"Platform Code: %@", [[UIDevice currentDevice] platformCode]];
    [self doLog:@"CPU Freq: %d\nBus Freq: %@\nTotal Memory: %@\nUser Memory: %@", CFN([[UIDevice currentDevice] cpuFrequency]), CFN([[UIDevice currentDevice] busFrequency]), CFN([[UIDevice currentDevice] totalMemory]), CFN([[UIDevice currentDevice] userMemory])];
    [self doLog:@"Mac addy: %@", [[UIDevice currentDevice] macaddress]];
     */
}

- (void) viewDidLoad
{
    self.navigationController.navigationBar.tintColor = COOKBOOK_PURPLE_COLOR;
    self.navigationItem.rightBarButtonItem = BARBUTTON(@"Action", @selector(action:));
    if ([[[UIDevice currentDevice] platformString] hasPrefix:@"iPad"])//如果平台是iPad
    {
        UIImageView *imgView = (UIImageView *)[self.view viewWithTag:999];
        imgView.frame = [[UIScreen mainScreen] applicationFrame];
        imgView.image = [UIImage imageNamed:([[UIDevice currentDevice] isLandscape]) ? @"Default-Landscape.png" : @"Default-Portrait.png"];
    }
}
@end

@interface TestBedAppDelegate : NSObject <UIApplicationDelegate>
@end

@implementation TestBedAppDelegate
- (void)applicationDidFinishLaunching:(UIApplication *)application {    
    UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:[[TestBedViewController alloc] init]];
    [window addSubview:nav.view];
    [window makeKeyAndVisible];
}
@end

int main(int argc, char *argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, @"TestBedAppDelegate");
    [pool release];
    return retVal;
}