How to determine the IOS version

-(Void) getiosversion

{

// # If _ iphone_ OS _version_max_allowed> = 50000 // This method is related to the compiler.

// Quanju. iosversion = 1;

// # Endif

Float version = [[[uidevice currentdevice] systemversion] floatvalue];

If (version> = 5.0)

{

Quanju. iosversion = 1; // defines the global variable to mark the IOS version

}

}

-(Void) getiosmodel

{

Cgsize sizetorequest;
If ([[[uidevicecurrentdevice] model] rangeofstring: @ "iPad"]. Location = 0)
Sizetorequest = cgsizemake (748,110 );
Else
Sizetorequest = cgsizemake (320, 48 );

}

// The following method is used to determine other information in IOS.

Obtain process information and device information (including Device Type, serial number, and IOS version) [[Nsprocessinfo processinfo] globallyuniquestring], [[Nsprocessinfo processinfo] hostname], [[Nsprocessinfo processinfo] operatingsystemname], [[Nsprocessinfo processinfo] operatingsystemversionstring], [[Nsprocessinfo processinfo] physicalmemory], [[Nsprocessinfo processinfo] processname]); ------------------------------ [Uidevice currentdevice]. uniqueidentifier, [Uidevice currentdevice]. Name, [Uidevice currentdevice]. systemname, [Uidevice currentdevice]. systemversion, [Uidevice currentdevice]. model, [Uidevice currentdevice]. localizedmodel, [Uidevice currentdevice]. batterylevel ___________________________________________________ Nslog ([[uidevice currentdevice] Name]); // name of the phone as named by user Nslog ([[uidevice currentdevice] uniqueidentifier]); // a guid like string Nslog ([[uidevice currentdevice] systemname]); // "iPhone OS" Nslog ([[uidevice currentdevice] systemversion]); // "2.2.1" Nslog ([[uidevice currentdevice] model]); // "iPhone" on both devices Nslog ([[uidevice currentdevice] localizedmodel]); // "iPhone" on both devices From: http://blog.csdn.net/jinglijun/article/details/7292674