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Weinan Qiu
3,283 PointsApp crash (unrecognized selector) for setting like button text
Using XCode6, downloaded the project from the download section of this unit.
Swapped app token and callback url.
And then run into a weird problem inside the THMetadataView:
If I do
[self.likesButton setTitle:@"2" forState:UIControlStateNormal];
the app runs fine and 2 actually shows up.
if I do
[self.likesButton setTitle:self.photo[@"likes"][@"count"] forState:UIControlStateNormal];
Then the app crashes after exiting setPhoto, it complains about "unrecognized selector"
In addition,
NSString *likeCount = self.photo[@"likes"][@"count"];
NSLog(@"%@ likes", likeCount);
It can totally be printed out normally. Just when it is added to the button title text, it causes the crashing
2 Answers
Weinan Qiu
3,283 PointsFigured it out!
The likeCount I got out of the NSDictionary is not a NSString, it is a NSNumber!
Andres Oliva
7,810 PointsWhy are you accessing the instance variable? You should never do that! Use your property's getter!
Weinan Qiu
3,283 PointsI was just trying different stuff... yes, I did used the getter before, but it produced the same crashing result.