(Swift) Circular progress UIView subclass with UIProgressView properties

If one tries to do a pod update (to install Pods) in your Example app directory, you'll likely see this error:

myke$ pod update
Update all pods
Re-creating CocoaPods due to major version update.
Setting up CocoaPods master repo
Setup completed
Updating local specs repositories
Analyzing dependencies
[!] The dependency `SnapKit` is not used in any concrete target.
The dependency `Quick` is not used in any concrete target.
The dependency `Nimble` is not used in any concrete target.

It turns out that each Pod requires a target.

Changing the Podfile to specify targets for pods results in this:

myke$ pod update
Update all pods
Re-creating CocoaPods due to major version update.
Updating local specs repositories
Analyzing dependencies
Downloading dependencies
Installing Nimble (4.1.0)
Installing Quick (0.9.2)
Installing SnapKit (0.21.1)
Generating Pods project
Integrating client project
Sending stats
Pod installation complete! There are 3 dependencies from the Podfile and 3 total pods installed.

I also updated the .gitignore file to ignore those pesky .DS_Store files.

The project file also got magically regenerated in the process as well.

Is there currently an easy way to start the progress animation from lets say .3 to the updated progress?

I am able to get this functionality from changing the current progress in updateProgress to something other than 0 but I figured that I would ask to see if there is better way to do this

I am getting this wierd crash right after installing this as a pod and running the application

dyld: Library not loaded: @rpath/XCTest.framework/XCTest Referenced from: /Users/colworx/Library/Developer/CoreSimulator/Devices/8F5D5AC5-3A58-4577-AAC1-BA1A170D728C/data/Containers/Bundle/Application/E1DE38E0-B483-4CD5-A6E8-2665EF17EEAB/squad.app/Frameworks/libswiftXCTest.dylib Reason: image not found

This pull request contains a change to fix the use of casting to an implicitly unwrapped optional. This will be deprecated in a future Swift release, and this also removes this warning when using this library.

This application is modifying the autolayout engine from a background thread after the engine was accessed from the main thread. This can lead to engine corruption and weird crashes.

There is no UpdateProgress: method in RPCircularProgress-Swift.h. Also the "progress" property is readonly. How can I set a progress value from within Objective C project?

I've added a RPCircularProgress to my view controller via storyboard, and in the view controller's class, I call updateProgress, a white dot appears on the screen. The dot actually moves with the bar as it fills up. I'm using the Swift 2.3 version with the AnimationDelegate commented out as CAAnimation isn't supported by Swift 2.1.

Im trying to use in an old project (Objc one) the library, but i notice that the generated interface didn't show all the methods ( the ones at the extensions).

Basically I invoke the method updateProgress

Question

From an issue via email:

How do I pause and resume an animation (i.e. one that's in the middle of animating)?

Answer

Read Apple's technical note here: https://developer.apple.com/library/content/qa/qa1673/_index.html

e.g.

func pauseAnimation() {
  var pausedTime = layer.convertTime(CACurrentMediaTime(), fromLayer: nil)
  layer.speed = 0.0
  layer.timeOffset = pausedTime
}

func resumeAnimation() {
  var pausedTime = layer.timeOffset
  layer.speed = 1.0
  layer.timeOffset = 0.0
  layer.beginTime = 0.0
  let timeSincePause = layer.convertTime(CACurrentMediaTime(), fromLayer: nil) - pausedTime
  layer.beginTime = timeSincePause
}

Updating progress updateProgress(1.0) calls animate() eventually leading to progressLayer.add(animation, forKey: AnimationKeys.progress)

This leads to high CPU use due system calling draw() repeatedly even after the animation has finished and the progress is set to the final value.

Setting animation.isRemovedOnCompletion = true fixes the issue at my end. Another work around is setting a completion handler and calling updateProgress(1.0, animated: false, ...) to kill the animation, which is not ideal.

I'm unaware of any broader issues setting isRemovedOnCompletion so leaving this as an issue rather than pull request.

First of all, thank you for sharing your awesome work!

While I was using your library, I noticed that I get a little dot on my view when I set clockwiseProgress = false

I get this issue whether I implement it programmatically or using storyboard. It works fine if clockwiseProgress = true. I am using Swift 4, Xcode Version 9.3. Do you have any idea why this would happen?

When i press my home button to turn my app to background, my circular progress completion handler is directly executed without waiting the already set duration . Any solution ?