# SwiftyTimer
[](https://travis-ci.org/radex/SwiftyTimer)
[](https://cocoapods.org/pods/SwiftyTimer)
[](#carthage)
#### Modern Swifty API for `NSTimer`
###### SwiftyTimer allows you to instantly schedule delays and repeating timers using convenient closure syntax. It's time to get rid of Objective-C cruft.
Read [Swifty APIs: NSTimer](http://radex.io/swift/nstimer/) for more information about this project.
## Usage
You can easily schedule repeating and non-repeating timers (repeats and delays) using `NSTimer.every` and `NSTimer.after`:
```swift
NSTimer.every(0.7.seconds) {
statusItem.blink()
}
NSTimer.after(1.minute) {
println("Are you still here?")
}
```
You can specify time intervals with these intuitive helpers:
```swift
100.ms
1.second
2.5.seconds
5.seconds
10.minutes
1.hour
2.days
```
You can pass method references instead of closures:
```swift
NSTimer.every(30.seconds, align)
```
### Manual scheduling
If you want to make a timer object without scheduling, use `new(after:)` and `new(every:)`:
```swift
let timer = NSTimer.new(every: 1.second) {
println(self.status)
}
```
(This should be defined as an initializer, but [a bug in Swift](http://www.openradar.me/18720947) prevents this)
Call `start()` to schedule timers created using `new`. You can optionally pass the run loop and run loop modes:
```swift
timer.start()
timer.start(modes: NSDefaultRunLoopMode, NSEventTrackingRunLoopMode)
```
### Invalidation
If you want to invalidate a repeating timer on some condition, you can take an `NSTimer` argument in the closure you pass in:
```swift
NSTimer.every(5.seconds) { (timer: NSTimer) in
// do something
if finished {
timer.invalidate()
}
}
```
## Installation
If you're using CocoaPods, just add this line to your Podfile:
```ruby
pod 'SwiftyTimer'
```
Install by running this command in your terminal:
```sh
pod install
```
Then import the library in all files where you use it:
```swift
import SwiftyTimer
```
#### Carthage
Just add to your Cartfile:
```ruby
github "radex/SwiftyTimer"
```
#### Manually
Simply copy `Sources/SwiftyTimer.swift` to your Xcode project.
## More like this
If you like SwiftyTimer, check out [SwiftyUserDefaults](https://github.com/radex/SwiftyUserDefaults), which applies the same swifty approach to `NSUserDefaults`.
You might also be interested in my blog posts which explain the design process behind those libraries:
- [Swifty APIs: NSTimer](http://radex.io/swift/nstimer/)
- [Swifty APIs: NSUserDefaults](http://radex.io/swift/nsuserdefaults/)
- [Statically-typed NSUserDefaults](http://radex.io/swift/nsuserdefaults/static)
- [Swifty methods](http://radex.io/swift/methods/)
### Contributing
If you have comments, complaints or ideas for improvements, feel free to open an issue or a pull request.
### Author and license
Radek Pietruszewski
* [github.com/radex](http://github.com/radex)
* [twitter.com/radexp](http://twitter.com/radexp)
* [radex.io](http://radex.io)
* this.is@radex.io
SwiftyTimer is available under the MIT license. See the LICENSE file for more info.