The project lacks an actual framework target so that it can be linked dynamically to apps and app extensions. "CocoaPods only" distribution makes this code hard to use by developers whose dependencies are dynamic frameworks.

P.S. It will be possible to use this code with Carthage package manager

Is there any reason support for iOS 7 can't be added? It would be helpful since the button changes were made back in 7 and continue in 8.

Hi,

after I upgraded from 6866d4d to ff72143, my app started crashing. I discovered that it is due to me setting attributedTitle of the startDownloadButton to nil, and this code thus initializing an NSAttributedString with a nil string.

I think the solution is quite easy - in [PKDownloadButton updateButton:title:], check if the passed title is nil. If yes, initialize attrTitle itself as nil.

Hi,

Thanks for this awesome component.
I have a situation where I have added a DownloadButton to each row of a UITableView. Imagine I tap on one of them and a download starts and the button gets updated when the download progresses. Now If I scroll, the cells get reused. How can I restore the state of each DownloadButton? (Showing download progress to be exact)

I have review the code in the Classes file.didn't seen any api is only for ios SDK version 8.0 or later.
can you tell me Requires iOS SDK version > 8.0.
PS:my app need support ios sdk version >=7.0.
thanks.

Just added DownloadButton to my project. Have to say, it is great. Thank you, Pavel, for this awesome soluton! But still there are some things, I'd like to ask:

1. How can I access UIImage+PKDownloadButton in Swift? When I try customising the button as in the example (calling UIImage initialiser with method buttonBackgroundWithColor), that initialiser in unaccessible. (I add DownloadButton as accessoryView to my UITableViewCell in cellForRowAtIndex method)
2. In UITableViewController class, when I implement PKDownloadButtonDelegate, downloadButtonTapped method is never called when I tap the button. (I have a button in each row of my tableView). How should I properly implement it?
3. When I programmatically change the DownloadButton state to .Downloading and the circle comes out, how can this circle be moved to the right side of the button corner? (Now it is on the left side)
4. Maybe this one is not about this library, but still, is it possible to implement AppStore-like cloud button with the same functions? For example, when I tap the button and the Downloading circle comes out?
5. How can I localise DownloadButton?

Sorry for the very long text, but I think this would be useful for many beginnes, like me

Thank you in advance.

Hey,
So I added your button to my table view in IB and created an IB outlet but when I try changing the start download title in viewDidLoad, nothing happens at all.
downloadButton.startDownloadButton.setTitle("Hello", forState: .Normal)
downloadButton.startDownloadButton.titleLabel?.text = "GET"

Hi PK,
I'm using PKDownloadButton within table view cells, at first those buttons are good and the delegate get called perfectly, but I observed that if a PKDownloadButton is reused, it won't animate anymore. Am I doing anything wrong? Is there any work around for it? Thank you!

I use this lib in swift, and add some constraints for PKDownloadButton, but I find the side of stopDownloadButton is not changed.
Who knows some way to change the size of stopDownloadButton?

Thanks

I have tried [self.downloadButton.startDownloadButton.titleLabel setFont: [UIFont systemFontOfSize: 14]];

but it's not working

Could you add Swift Example Code ?
to make me understand how to use it in swift .

Thank you

Hi,

I m trying to set the progress to the stopDownloadButton in a NSURLSessionDownloadTask . I see the stopDownloadButton, but the progress is not increasing. Here is my block:

progress:^(NSProgress * _Nonnull downloadProgress) {
     self.downloadButton.stopDownloadButton.progress = downloadProgress.fractionCompleted;
}                                                                

What am I doing wrong?

Thanks in advance,

When I tried to compile it on Xcode 8, the compiling fails, and here is the error description:

CodeSign /Users/xxx/Library/Developer/Xcode/DerivedData/YYY-devhhrztnwiafzdnbmqgugeublld/Build/Products/Debug-iphonesimulator/DownloadButton.bundle
cd /Users/ydong/Documents/codebase/YYY/YYY/Pods
export CODESIGN_ALLOCATE=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"

Signing Identity: "-"

/usr/bin/codesign --force --sign - --timestamp=none /Users/xxx/Library/Developer/Xcode/DerivedData/YYY-devhhrztnwiafzdnbmqgugeublld/Build/Products/Debug-iphonesimulator/DownloadButton.bundle

/Users/xxx/Library/Developer/Xcode/DerivedData/YYY-devhhrztnwiafzdnbmqgugeublld/Build/Products/Debug-iphonesimulator/DownloadButton.bundle: bundle format unrecognized, invalid, or unsuitable
Command /usr/bin/codesign failed with exit code 1

Does anyone knows what's the going wrong?

In UIButton+PKDownloadButton.m, the -tintColorDidChange method is reimplemented. This replaced the default implementation of the said method, and makes all UIButtons without a custom -tintColorDidChange to gain the rounded border whenever their tintColor is changed.

It is better to create a UIButton subclass for the "startDownloadButton" and "downloadedButton" and override -tintColorDidChange in the subclass to avoid the global effect.

I find the default color of the empty line is gray, and I want to change it to red. and implement the following code.
self.btnDownload.stopDownloadButton.tintColor = UIColor.red

But it does not work, it only makes the filledLine color changed.

Who knows how to change the color of empty line?

2018-05-28 20:04:20.696946+0800 DownloadButton_Example[22493:1707307] +[CATransaction synchronize] called within transaction
2018-05-28 20:04:21.066380+0800 DownloadButton_Example[22493:1707307] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x60400028d4d0 PKCircleView:0x7fe842d1c7a0.width == 0 (active)>",
"<NSLayoutConstraint:0x60400028d750 H:|-(0)-[PKCircleView:0x7fe842d1c7a0] (active, names: '|':PKStopDownloadButton:0x7fe842d1b980 )>",
"<NSLayoutConstraint:0x60400028d7a0 H:[PKCircleView:0x7fe842d1c7a0]-(0)-| (active, names: '|':PKStopDownloadButton:0x7fe842d1b980 )>",
"<NSLayoutConstraint:0x60000028a5f0 PKDownloadButton:0x7fe842c0d800.width == 93 (active)>",
"<NSLayoutConstraint:0x60000028a730 H:|-(0)-[PKStopDownloadButton:0x7fe842d1b980] (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>",
"<NSLayoutConstraint:0x60000028a780 H:[PKStopDownloadButton:0x7fe842d1b980]-(0)-| (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x60400028d4d0 PKCircleView:0x7fe842d1c7a0.width == 0 (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2018-05-28 20:04:21.070967+0800 DownloadButton_Example[22493:1707307] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x60400028d520 PKCircleView:0x7fe842d1c7a0.height == 0 (active)>",
"<NSLayoutConstraint:0x60400028d7f0 V:|-(0)-[PKCircleView:0x7fe842d1c7a0] (active, names: '|':PKStopDownloadButton:0x7fe842d1b980 )>",
"<NSLayoutConstraint:0x60400028d840 V:[PKCircleView:0x7fe842d1c7a0]-(0)-| (active, names: '|':PKStopDownloadButton:0x7fe842d1b980 )>",
"<NSLayoutConstraint:0x60000028a460 PKDownloadButton:0x7fe842c0d800.height == 30 (active)>",
"<NSLayoutConstraint:0x60000028a7d0 V:|-(0)-[PKStopDownloadButton:0x7fe842d1b980] (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>",
"<NSLayoutConstraint:0x60000028a820 V:[PKStopDownloadButton:0x7fe842d1b980]-(0)-| (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x60400028d520 PKCircleView:0x7fe842d1c7a0.height == 0 (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2018-05-28 20:04:21.072207+0800 DownloadButton_Example[22493:1707307] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x60400028de30 PKCircleView:0x7fe842d20e40.width == 26 (active)>",
"<NSLayoutConstraint:0x60400028de80 H:|-(0)-[PKCircleView:0x7fe842d20e40] (active, names: '|':PKPendingView:0x7fe842d202e0 )>",
"<NSLayoutConstraint:0x600000289f60 H:[PKCircleView:0x7fe842d20e40]-(0)-| (active, names: '|':PKPendingView:0x7fe842d202e0 )>",
"<NSLayoutConstraint:0x60000028a5f0 PKDownloadButton:0x7fe842c0d800.width == 93 (active)>",
"<NSLayoutConstraint:0x60000028a9b0 H:|-(0)-[PKPendingView:0x7fe842d202e0] (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>",
"<NSLayoutConstraint:0x60000028aa00 H:[PKPendingView:0x7fe842d202e0]-(0)-| (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x60400028de30 PKCircleView:0x7fe842d20e40.width == 26 (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2018-05-28 20:04:21.073154+0800 DownloadButton_Example[22493:1707307] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x60400028dde0 PKCircleView:0x7fe842d20e40.height == 26 (active)>",
"<NSLayoutConstraint:0x600000283a70 V:|-(0)-[PKCircleView:0x7fe842d20e40] (active, names: '|':PKPendingView:0x7fe842d202e0 )>",
"<NSLayoutConstraint:0x600000289a10 V:[PKCircleView:0x7fe842d20e40]-(0)-| (active, names: '|':PKPendingView:0x7fe842d202e0 )>",
"<NSLayoutConstraint:0x60000028a460 PKDownloadButton:0x7fe842c0d800.height == 30 (active)>",
"<NSLayoutConstraint:0x60000028aa50 V:|-(0)-[PKPendingView:0x7fe842d202e0] (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>",
"<NSLayoutConstraint:0x60000028aaa0 V:[PKPendingView:0x7fe842d202e0]-(0)-| (active, names: '|':PKDownloadButton:0x7fe842c0d800 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x60400028dde0 PKCircleView:0x7fe842d20e40.height == 26 (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

Hello,
I am not able to see the progress. I am just able to see the circle with stop button but no progress even though the app is downloading the content. I have manually added classes from the Download button folder under the Example app. Below is the relevant code:
if (self.progress.fractionCompleted > 0){
DLog(@"***** %f",self.progress.fractionCompleted);
self.downloadProgress.stopDownloadButton.progress = self.progress.fractionCompleted;
}

kPKDownloadButtonState_Pending for PKDownloadButton state not rotating.

I think the podspec file is not set correctly. It targets iOS and 7.0 only. I think it should have the greater than or equal to 7.0 in the podspec so it can support all versions.

I currently get an error when trying to add it to my project.

[!] Unable to satisfy the following requirements:

• 'DownloadButton' required by 'Podfile'

My Podfile targets 7.1 and up.

Needs to be tested.