Questions tagged [completion-block]
54 questions
28
votes
5 answers
Stop an auto-reverse / infinite-repeat UIView animation with a BOOL / completion block
I'm setting up the following UIView animateWithDuration: method, with the intention of setting my animationOn BOOL elsewhere in the program to cancel that infinite looped repeat. I was under the impression that the completion block would be called…
Luke
- 9,512
- 15
- 82
- 146
8
votes
1 answer
ios 8 completion block not called
In my app I am using TTOpenInAppActivity to insert "Open in" action inside UIActivityController.
Inside it works like this:
Some view controller presents UIActivityController with TTOpenInActivity already built in.
-(void)openWithAction
{
NSURL…
Yevgeniy Leychenko
- 1,287
- 11
- 25
6
votes
3 answers
User interaction with uiview and animation completion blocks
I have the following code:
[UIView animateWithDuration:2.0 delay:0.0 options:UIViewAnimationOptionAllowUserInteraction
animations:^{
imageView.bounds = endBounds;
}
completion:^(BOOL finished) {
[UIView…
Justin Miller
- 757
- 2
- 8
- 19
5
votes
2 answers
Swift presentViewController completion block working only in debug not called in release
I have a strange behaviour with a completion block in Debug and Release.
For example:
sourceViewController.presentViewController(ccVC, animated: true, completion: { () -> Void in
…
Andrea Bozza
- 1,374
- 2
- 12
- 31
4
votes
3 answers
How to have a completion handler/block after Alamofire Post request?
I have a method which handles a Apple Push Notification Service remote notification. When this method is executed, I want it to call my server and do a HTTP POST request using the Alamofire library. I want to execute another method that will handle…
The Nomad
- 7,155
- 14
- 65
- 100
4
votes
1 answer
How do I use a completionBlock in swift?
I'm trying to utilize swift's SKStoreProductViewController, but am getting errors with my syntax, specifically with my completion block.
Here is my code:
let storeViewController:SKStoreProductViewController =…
krisacorn
- 831
- 2
- 13
- 23
4
votes
1 answer
NSOperation completionBlock is called twice
I'm working on a NSOperation subclass and I came across this very weird issue were the completion block is called twice in a row. The KVO calls seem fine but the completionBlock is still strangely called twice. Am I misunderstanding NSOperation? The…
JonasG
- 9,274
- 12
- 59
- 88
3
votes
3 answers
swift 4.2 Cannot convert value of type '(_) -> Void' to expected argument type '(() -> Void)?'
==> swift 3 version in perfect work but swift 4 and swift 4.2 in now working.
static func animate(_ duration: TimeInterval,
animations: (() -> Void)!,
delay: TimeInterval = 0,
options:…
Digvijaysinh Gida
- 381
- 1
- 7
- 20
3
votes
2 answers
Using Obj-C completion block in Swift
In Objective-C, I have a completion block class defined as:
File.h
typedef void (^MYCompletionBlock)(BOOL success, NSDictionary *result, NSError *error);
Then, in a Swift file, I try to use the completion block as follows:
Swift.swift
class…
Vee
- 1,821
- 3
- 36
- 60
3
votes
1 answer
CKModifyRecordsOperation completion Swift 2.0
I have the code below but I am shown an error when building with Xcode 7 and Swift 2.0
The error is Cannot call value non-function type (([CKRecord]?, [CKRecordID]?, NSError?) -> Void)?
Thanks
let saveRecordsOperation =…
Tom Coomer
- 6,227
- 12
- 45
- 82
2
votes
1 answer
Swift Async With Completion Block
I have two functions that executes async.
I tried to "syncronize" them with: DispatchGroup and DispatchQueue
let queue = DispatchQueue(label: "com.company.app.queue", attributes: .concurrent)
let group = DispatchGroup()
queue.async(group: group) {
…
adi pslr
- 55
- 6
2
votes
1 answer
Completion block never gets called?
We have a function that when it finishes another function should be called in it's completion block but whatever is inside the completion block is never called. Here is the function:
func appendAllData (completion: () -> Void) {
guard let…
SwiftyJD
- 5,257
- 7
- 41
- 92
2
votes
2 answers
How to perform another method after finishing a method using completion block in objective c?
I have two methods. I want to execute one after finishing task of first one. How can i do this?
Saad
- 235
- 2
- 12
2
votes
2 answers
How to make one method wait for another (async) method to finish before continuing execution?
I have searched a lot to find out how others have solved this problem, but unfortunately, I didn't find the answer to this specific question. I would really appreciate your help.
Here's a summary:
I have two methods in my class, method1 and method2.…
makingCodeWork
- 21
- 4
2
votes
2 answers
How to Supress implicit return from a closure with Void return type in Swift
lets consider we have a closure like: (used as completionHandler)
func doSomething (completionHandler : (done : Bool)->Void )->Void {
...
completionHandler(true)
}
now if we want to do something like that :
doSomething({ (done : Bool)->…
M Abdul Sami
- 1,522
- 1
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- 16