Unrecognized selector to an openfeint unlock achievement call

Question

I use the call as it is supposed to be used, but it causes a crash.

//someId is a correct achievement ID
[OFAchievementService unlockAchievement:@"someId"];

and I get the following error

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[OFAchievementService unlockAchievement:]: unrecognized selector sent to class 0x26f1c8'

I also get a warning

warning: 'OFAchievementService' may not respond to '+unlockAchievement:'

How is one supposed to call this function? This looks correct according to examples.

Using OpenFeint version 12102010 (2.8). https://api.openfeint.com/ — some_id, Jan 26 '11 at 22:53
Pretty sure they changed the achievement API bits in 2.7 - I'd be tempted to check the API docs to make sure that method is still valid. — John Parker, Jan 26 '11 at 22:56

WrightsCS · Accepted Answer · 2011-12-13T05:59:42.147

2

Try:

OFAchievementService *openfeint = [[OFAchievementService alloc] init];
[openfeint unlockAchievement:@"someId"];
[openfeint release];

instance methods begin with - class level methods begin with +.

With OpenFeint SDK 2.7+ try:

/* The following example shows how to unlock an achievement completely in one step without bothering to show a notification: */
[[OFAchievement achievement: achievementId] updateProgressionComplete: 100.0f andShowNotification: NO];

edited Dec 13 '11 at 05:59

answered Jan 26 '11 at 22:44

WrightsCS

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Nope. doesnt work. :( same kind of error . '-[OFAchievementService unlockAchievement:]: unrecognized selector sent to instance 0x734b290' – some_id Jan 26 '11 at 22:48
what version of the OF SDK are you using? – WrightsCS Jan 26 '11 at 22:53
Nice1. It worked. Thanks. Do you know how notifications can be set to the orientation of the current view?Thanks – some_id Jan 26 '11 at 23:06

score 1 · Answer 2 · edited Dec 16 '11 at 06:36

1

The following line just worked well enough for me (in OpenFeint SDK version 2.10i):

[[OFAchievement achievement:@"achievementID"] unlock];

edited Dec 16 '11 at 06:36

WrightsCS

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answered Apr 10 '11 at 17:12

Erfan

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Unrecognized selector to an openfeint unlock achievement call

2 Answers2