iOS Development--Summary of device information (not yet finished ...) ）

1. Get information about your device

Uidevice *device = [[Uidevice alloc] init];

NSString *name = device.name; Get the name of the device owner

NSString *model = device.name; Get the category of the device

NSString *type = Device.localizedmodel; Get localized version

NSString *systemname = device.systemname; Get the currently running system

NSString *systemversion = device.systemversion;//Gets the version of the current system

NSLog (@ "name:%@\nmodel:%@\ntype:%@\nsystemname:%@\nsystemversion:%@\n", Name,model,type,systemname, Systemversion);

2. Get unique identifiers for the device

NSString *identifier = [[[Uidevice Currentdevice] Identifierforvendor] uuidstring];

NSLog (@ "identifier:%@", identifier);

3. Create a UUID (a random identifier)

NSString *uuid = [self createuuid];

NSLog (@ "uuid:%@", uuid);

-(nsstring*) Createuuid {

NSString *id = [[Nsuserdefaults standarduserdefaults] objectforkey:@ "UUID"]; Gets the value identified as "UUID"

if (id = = nil)

{

if ([[[Uidevice Currentdevice] systemversion] Floatvalue] > 6.0)

{

APIs that can be used after iOS 6.0

NSString *identifiernumber = [[Nsuuid UUID] uuidstring];

[[Nsuserdefaults Standarduserdefaults] setobject:identifiernumber forkey:@ "UUID"];

[[Nsuserdefaults standarduserdefaults] synchronize];

}

else{

APIs used prior to ios6.0

Cfuuidref uuid = cfuuidcreate (NULL);

Cfstringref uuidstring = cfuuidcreatestring (NULL, UUID);

NSString *identifiernumber = [NSString stringwithformat:@ "%@", uuidstring];

[[Nsuserdefaults Standarduserdefaults] setobject:identifiernumber forkey:@ "UUID"];

[[Nsuserdefaults standarduserdefaults] synchronize];

Cfrelease (uuidstring);

Cfrelease (UUID);

}

return [[Nsuserdefaults standarduserdefaults] objectforkey:@ "UUID"];

}

return ID;

}

iOS Development--Summary of device information (not yet finished ...) ）