Objective c wait for method to finish, How do you stop a thread in Objective C? Objective-C Wait for Async Method to Complete Swift 5. I have to run b when a is finished! Thanks. This causes the method calling the function to continue. Waiting for existing threads to complete their execution can be achieved by using the awaitTermination () method. How can i do this? Example : Method a, Method b. Dec 16, 2025 · This blog post explores detailed methods to wait for a background thread to finish in Objective-C. In Objective-C, the equivalents of Java's wait () and notify () are achieved using NSCondition, NSConditionLock, and dispatch semaphores. We’ll cover built-in Foundation classes, Grand Central Dispatch (GCD) techniques, and legacy approaches, along with best practices to avoid common pitfalls like deadlocks or UI freezes. Although, it won't wait until all threads stop executing. My question is how do I ensure that methodA to methodC has finished executing before executing NSLog? I found that a way to solve this problem is to use notification center. Oct 7, 2010 · I'd suggest to use NSThread since it already has isFinished method so you don't need extra flag for that. Because both Swift methods have the same behavior, they share the same page in the documentation. It allows us to wait for multiple asynchronous tasks to finish. Also you can use NSCondition (wait, signal methods) so one thread can wait, and background thread would signal when it's close to finish job, so you don't need to re-check what happens every second. Feb 13, 2012 · How do I wait for a particular method to finish within another method? Asked 13 years, 11 months ago Modified 13 years, 11 months ago Viewed 738 times. But how do i wait for the two async methods to be completed and how do I setup the callb Apr 29, 2015 · I have searched and tried several ways but the program does not want to wait for the asynchronous call to finish. A second later the program gets back into the function CheckForHost setting the correct value into retVal. These synchronization primitives allow for signaling between threads and managing resource access in a multithreaded environment. Oct 4, 2012 · Waiting for methods to finish in iOS Asked 13 years, 2 months ago Modified 13 years, 2 months ago Viewed 6k times How do I wait for an asynchronously dispatched block to finish? Asked 15 years, 3 months ago Modified 5 years, 10 months ago Viewed 128k times Feb 16, 2014 · I'd like to init a model, let the model do some async stuff and present a new viewcontroller once completed. Waitgroups in Objective-C Our first example demonstrates the use of a dispatch group, which is similar to a wait group. How do you wait for threads to finish? When using an Executor, we can shut it down by calling the shutdown () or shutdownNow () methods. When method A is called, it calls method B and then it wait for delegate connectionDidFinish which connectionDidFinish will execute MethodC. Jun 1, 2011 · I need to find a solution for wait for a method or function finish to run its code. 5 and later automatically translates Objective-C methods that take completion handlers into asynchronous methods using Swift’s native concurrency support, in addition to importing the callback-based version of the method into Swift. When debugging, the function CheckForHost first returns -1 as retVal.
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