iOS獲取設備信息常用方法

    NSLog(@"HostName: %@", [[NSProcessInfo processInfo] hostName]);

    //globallyUniqueString 唯一的標示符，每次調用都會不一樣，可以用作一些臨時緩存文件的名字

    NSLog(@"GlobalUniqueString: %@", [[NSProcessInfo processInfo] globallyUniqueString]);

    //操作系統名稱

    NSLog(@"OperatingSystemName: %@", [[NSProcessInfo processInfo] operatingSystemName]);

    //操作系統版本

    NSLog(@"OperatingSystemVersion: %@", [[NSProcessInfo processInfo] operatingSystemVersionString]);

    //物理內存

    NSLog(@"PhysicalMem: %llu", [[NSProcessInfo processInfo] physicalMemory]);

    //進程名稱

    NSLog(@"ProcessName: %@", [[NSProcessInfo processInfo] processName]);

    //供應商標識

    NSLog(@"UniqueId: %@", [UIDevice currentDevice].identifierForVendor);

    //設備類型（iPhone、iPad）

    NSLog(@"userInterfaceIdiom: %d", [UIDevice currentDevice].userInterfaceIdiom);

    //設備名字

    NSLog(@"Name: %@", [UIDevice currentDevice].name);

    //系統名字

    NSLog(@"SystemName: %@", [UIDevice currentDevice].systemName);

    //系統版本

    NSLog(@"SystemVersion: %@", [UIDevice currentDevice].systemVersion);

    //模型

    NSLog(@"Model: %@", [UIDevice currentDevice].model);

    //本地化的模型

    NSLog(@"LocalizeModel: %@", [UIDevice currentDevice].localizedModel);

    //電池狀態

    NSLog(@"BatteryLevel: %f", [UIDevice currentDevice].batteryLevel);

   //判斷設備是否是9.0以上系統
    [[[UIDevice currentDevice] systemVersion] floatValue] >= 9.0f  注意：
//假如我們的設備版本號為9.1.1（為字符串類型），對其進行floatValue浮點化后值為9.100000。3. //判斷設備是否是iPhone、iPad
    iPad：[[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad

    iPhone: [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone


UIUserInterfaceIdiom in UIDevice.h  
typedef NS_ENUM(NSInteger, UIUserInterfaceIdiom) {  
#if __IPHONE_3_2 <= __IPHONE_OS_VERSION_MAX_ALLOWED  
    UIUserInterfaceIdiomPhone,           // iPhone and iPod touch style UI  
    UIUserInterfaceIdiomPad,             // iPad style UI  
#endif  
};  </pre>