CODEWITHSUNDEEP
iosiphoneobjective-c
LUI
LUI

Reputation: 95

Unable to call instance method inside performSelectorInBackground

i have a class MatchDayDataController , having a method pushIncompleteDataToServer.

from another class , SummaryVC.m i want to call pushIncompleteDataToServer in performSelectorInBackground.

Code:

 MatchDayDataController *sharedDataController = [MatchDayDataController sharedDataController];
        [self performSelectorInBackground:@selector([sharedDataController pushIncompleteDataToServer]) withObject:nil];

It shows some syntax error in performSelectorInBackground. What i missed here? pls guide.

Upvotes: 0

Views: 157

Answers (3)

A_G
A_G

Reputation: 69

[self performSelectorInBackground:@selector([sharedDataController pushIncompleteDataToServer]) withObject:nil];

This would make the code to search for the method in the same class

It should be:

[sharedDataController performSelectorInBackground:@selector(pushIncompleteDataToServer) withObject:nil];

which would call the method in the sharedDataController class

Also, in the method performSelectorInBackground: withObject: the withObject is for the parameters to be passed to the selector method. I this case, since there are no parameters, we pass nil.

Upvotes: 3

Merlevede
Merlevede

Reputation: 8180

You need to replace self with sharedDataController.

[sharedDataController performSelectorInBackground:@selector(pushIncompleteDataToServer) withObject:nil];

The selector will be performed on the receiver of the performSelectorInBackground message, and self doesn't implement that method.

Upvotes: 0

Akhilrajtr
Akhilrajtr

Reputation: 5182

Try this,

[sharedDataController performSelectorInBackground:@selector(pushIncompleteDataToServer) withObject:nil];

instead of 

[self performSelectorInBackground:@selector([sharedDataController pushIncompleteDataToServer]) withObject:nil];

Upvotes: 0

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