iphone - How to access the Device token from didRegisterForRemoteNotificationsWithDeviceToken to my ViewDidLoad method -

i know basic need pull device token , store in string , put(display) on label on viewdidload method. might posible solution? im new on ios development. should use global variable? or posible solution?

this code.

appdelegate.m

- (void)application:(uiapplication *)app didregisterforremotenotificationswithdevicetoken:(nsdata *)devicetoken {  nsstring *str = [nsstring stringwithformat:@"device token=%@",devicetoken];  nslog(@"%@", str);  //get string , display on viewdidload method.  } 

please me. how use global variable access string?

on viewcontroller.m class

- (void)viewdidload {    [super viewdidload];     nsstring *gettoken = @"token appdelegate";  } 

something that.

you can store token user defaults:

[[nsuserdefaults standarduserdefaults] setvalue:str forkey:@"device_token"]; 

and in viewdidload:

nsstring *gettoken = [[nsuserdefaults standarduserdefaults] stringforkey:@"device_token"]; 

but there other approaches: global variable, persistence layer, nsnotification, , on.

edit:

here have info how register standard user defaults.

edit2:

in order obtain token string, following

nsstring *devicetokenstring = [devicetoken description]; devicetokenstring = [devicetokenstring stringbytrimmingcharactersinset:[nscharacterset charactersetwithcharactersinstring:@"<>"]]; devicetokenstring = [devicetokenstring stringbyreplacingoccurrencesofstring:@" " withstring:@""]; 

then, in devicetokenstring end having full value without whitespaces or other character. ready trigger push notifications.