Well-tested GCD Timer in Swift

Related tags

GCD swift timer dispatch gcd
Overview

Carthage compatible

GCDTimer

Well tested Grand Central Dispatch (GCD) Timer in Swift. Checkout the test file.

Usage

Long running timer

import GCDTimer

class Demo {

  init() {
    let timer = GCDTimer(intervalInSecs: 20)
    
    timer.Event = {
      println("Hello World")
      
      // Send some data to the server
    }
    
    timer.start()
    
    //Don't forget to pause the timer in the AppDelegate:applicationWillResignActive(application: UIApplication) method.
  }

}

Autofinishing timer

import GCDTimer

class Demo {

  init() {
    let timer = GCDTimer(intervalInSecs: 2)
    
    timer.Event = {
      timer.pause()
      //Process after finishing the timer
    }
    
    timer.start()
  }
  
}

Dispatch After - Delay

var index = 0
GCDTimer.delay(2) {
    index += 1
}

Installation

  • Add github "hemantasapkota/GCDTimer" to your cartfile
  • Execute carthage update

Example

The example shows how to use GCDTimer to periodically poll newly submitted items from Hacker News.

ExampleSS

Author

License

The MIT License (MIT)

Copyright (c) 2021 Hemanta Sapkota

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Comments
  • Retain cycle

    Retain cycle

    timerSource retains self while self retains timerSource.

    private let timerSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, GCDTimer.gcdTimerQueue)

dispatch_source_set_event_handler(timerSource, { () -> Void in
                self.event()
 })

    Something like this should break retain cycle:

    dispatch_source_set_event_handler(timerSource, { [weak self] () -> Void in
        self?._event()
})
    opened by S2Ler 1
  • Better Installation Section

    Better Installation Section

    Hey, your library is really interesting. I created this iOS Open source Readme Template so you can take a look on how make your Installation Section better If you want, I can help you to organize the lib.

    What are your thoughts? 😄

    opened by lfarah 0
Owner
Hemanta Sapkota
Software Architect. React Native, React, Golang, Swift, Objective-C, Android, Java, Kotlin, AWS.
Hemanta Sapkota
GitHub
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