Storing accessToken in Facebook iOS SDK -


i have facebook ios sdk set in app. however, have trouble determining when session finished. how check if it's finished, , (how) store access token received login?

i need determine whether have access token or not right beginning know whether log in again, or go forward in app.

are familiar nsuserdefaults ? storing preferences app.

they extremely easy use, , looking for. it's ..

nsuserdefaults *factoids; nsstring *whateveridstring; // make property convenience    factoids = [nsuserdefaults standarduserdefaults]; self.whateveridstring = [factoids stringforkey:@"storethestringhere"];  if ( ( whateveridstring == nil ) || ( [whateveridstring isequaltostring:@""] ) )     // not yet exist, try make new one... else     // made 1 last time program ran  // when make new one, save in prefs file this...    [factoids setobject:yournewstring forkey:@"storethestringhere"]; [factoids synchronize];

hope helps!

one preferences in 'factoids' in example above

two decide on name preference. 'storethestringhere' in example.

three string 'whateveridstring' in example using stringforkey:

four check if either nil or blank. if so, start fresh.

five once value, save shown!

hope helps!


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