The NSInvocationOperation class is a concrete subclass of NSOperation that manages the execution of a single encapsulated task specified as an invocation.
Questions tagged [nsinvocationoperation]
35 questions
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Correct usage: NSOperation and NSInvocationOperation
I am studing about NSOperation and I have a doubt about the correct way of implementing it for my situation.
In my app I want to perfom a lot of operations in background. Since my app can import data from a desktop software, my database can become…
Rafael
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3 answers
Setting more than one argument for NSInvocationOperation
-[NSInvocationOperation initWithTarget:selector:object:] only accepts one object to be passed as an argument for the method that will be called. I want to use two arguments; how can I do that?
This is my code:
- (void)loadImage:(NSURL *)imageURL
{
…
Khalid
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NSInvocationOperation with bad access crash
I got a big problem with NSInvocationOperation. When I run on my iPod 4, firmware 5.0.1, it's OK. But on my iPhone 4, iOS 4.1, it crashed. This is my code:
CustomAnnotation *annotation = [[[ModelManager defaultModelManager]…
Tớ Tên Là Chíp
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Hide a UIlabel after some seconds
I'm using this following code to hide a UILabel after some seconds. Unfortunately if the user close the view during the NSInvocation is in progress the app crashes
- (void)showStatusBarwithText:(NSString*)text{
lblNotification.hidden=NO;
…
Usi Usi
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Get UIImageView animation for at least one cycle before terminating
I'm new to Objective C and X-code and I'm having trouble getting my UIImageView animation to stay on screen for at least one complete cycle. I am using it as a custom wait animation for when a button is tapped and a bunch of saving and processing…
benzo
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