Stack Overflow
Stack Overflow

Questions tagged [nsinvocationoperation]

The NSInvocationOperation class is a concrete subclass of NSOperation that manages the execution of a single encapsulated task specified as an invocation.

Resource

35 questions
0
votes
1 answer

Asynchronous connection not getting called

I want to create two connections in a single view controller class. I am using NSOperationQueue for this purpose. The two connections are created in two functions and push inside the queue .The problem is delegates are not called. Please help me…
Anil Kothari
  • 7,653
  • 4
  • 20
  • 25
0
votes
1 answer

NSInvocationOperation - Does not call method on a different thread?

So I have a service clint class that has a method called fetch. I am invoking this method using NSInvocationOperation. and when I check the thread it seems like it's callin the mthod on the main thread. Isn't the whole point of using…
aryaxt
  • 76,198
  • 92
  • 293
  • 442
0
votes
2 answers

How to pass object in NSInvocationOpreation

I have created an NSInvocationOpertion object as follows NSString *myString = @"Jai Hanuman"; NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(taskMethod) object:myString]; NSOperationQueue…
Captain Buck
  • 679
  • 1
  • 5
  • 17
0
votes
2 answers

Adding information returned by threads to an array

I am relatively new to Objective C and I am trying to read information from a URL then add its info to my Name object then add the name objects to an array. I am able to read the info from the URLs fine and furthermore I am successful in adding…
kpce
  • 35
  • 9
0
votes
1 answer

NSInvocationOperation Cancel usage

Is it right if I cancel an NSInvocationOperation inside the operation? example: .h file: //defined in the interface NSInvocationOperation *op1; NSOperationQueue *loadQueue; .m file: -(id)init{ op1 = [NSInvocationOperation new]; loadQueue =…
Siddharthan Asokan
  • 4,321
  • 11
  • 44
  • 80
0
votes
1 answer

Uploading files in background mode

I have two views: myFristView and mySecondView, in myFristView I have a code which can read the fields in my database and then send to a PHP server, this code NSInvocationOperation using this class to send the files in background mode. The process…
user3781174
  • 245
  • 5
  • 16
0
votes
1 answer

How to get object from NSInvocationOperation called method?

I have written code in my project [NSInvocationOperation alloc] initWithTarget:self selector:@selector(loadImage) object:ob in…
Sami
  • 139
  • 2
  • 8
0
votes
2 answers

UIImageView Takes Time To Load Image

I wanted to download image from internet from particular link Downloading this image take place in other class which is Singleton class name moreAppInternet.m My moreAppInterNet.m file is as follow //finishedImgDling is bool //mutableData is…
chavo218
  • 1
  • 1
0
votes
0 answers

NSInvocation crashes the app

My project is a calculation based criteria,where we populate list of mandatory fields from the coredata that were first fetched through webservice. There is an option to calculate and reset the field. Since the calculation takes much time and…
Nassif
  • 1,113
  • 2
  • 14
  • 34
0
votes
1 answer

Access to NSUInteger property

I've some problem with accessing NSUInteger property in my code, which look like that: MyController.h @interface MyController : UIViewController @property (retain, nonatomic) NSArray *updatesArray; @property (nonatomic) NSUInteger…
Gie
  • 1,907
  • 2
  • 24
  • 49
0
votes
1 answer

Where to create a NSManagedObjectContext for an NSInvocationOperation

I have multiple NSInvocationOperations created and added to an NSOperationQueue. Two of these NSInvocationOperations create lots of objects of the same parent class (Country and City which subclass Location). It has mostly gone well except that…
rob5408
  • 2,972
  • 2
  • 40
  • 53
0
votes
1 answer

why won't these NSInvocationOperation's actually run?

Just trying to do a simple example with NSOperationQueue & NSInvocationOperation. Here's my code: - (void) runMethodsViaOperationQueue { NSOperationQueue *thisQueue = [[NSOperationQueue alloc] init]; NSInvocationOperation…
pteeter
  • 31
  • 4
0
votes
0 answers

Core data error while using nsoperation

I'm using some core-data entities in a method that is concurrent, (it's in a NSInocationOperation object)... and I'm getting this error: CoreData: error: NULL _cd_rawData but the object is not being turned into a fault How to avoid this? The method…
user1028028
  • 6,323
  • 9
  • 34
  • 59
0
votes
1 answer

how to use asynchronous NSURLConnection for multiple urls

First, I think iPad has only single NIC (or what ever hardware) for handling connection. So requests are queued and serviced sequentially and there can't be 2 connections running at the same time. Is this guess true? I have UITabBar controller,…
Hana Ibrahim
  • 3
  • 3
0
votes
1 answer

NSDictionary passed to NSOperation is null inside the invoked method

I'm using the code below to pass multiple values to NSOperation. I have defined an NSDictionary but I can't access on it (it returns always null) within the method called. Below is my code to invoke the method NSDictionary *params = [[NSDictionary…
Mario Catena
  • 575
  • 1
  • 8
  • 20
1
2
3