Customizable appstore style download button.

Customizable designable components. Editing with IB.

Usage

To run the example project, clone the repo, and run pod install from the Example directory first. Check example project to see usage.

#import <DownloadButton/PKDownloadButton.h>

Usage for representing network operations:

#pragma mark - PKDownloadButtonDelegate

- (void)downloadButtonTapped:(PKDownloadButton *)downloadButton 
                currentState:(PKDownloadButtonState)state {
    switch (state) {
        case kPKDownloadButtonState_StartDownload:
            self.downloadButton.state = kPKDownloadButtonState_Pending;
            [self.pendingSimulator startDownload];
        break;
        case kPKDownloadButtonState_Pending:
            [self.pendingSimulator cancelDownload];
            self.downloadButton.state = kPKDownloadButtonState_StartDownload;
        break;
            case kPKDownloadButtonState_Downloading:
            [self.downloaderSimulator cancelDownload];
            self.downloadButton.state = kPKDownloadButtonState_StartDownload;
        break;
        case kPKDownloadButtonState_Downloaded:
            self.downloadButton.state = kPKDownloadButtonState_StartDownload;
            self.imageView.hidden = YES;
        break;
        default:
            NSAssert(NO, @"unsupported state");
        break;
    }
}

#pragma mark - DownloaderSimulatorDelegate

- (void)simulator:(PKDownloaderSimulator *)simulator didUpdateProgress:(double)progress {
    if (simulator == self.pendingSimulator) {
        if (progress == 1.) {
            self.downloadButton.state = kPKDownloadButtonState_Downloading;
            [self.downloaderSimulator startDownload];
        }
    }
    else if (simulator == self.downloaderSimulator) {
        self.downloadButton.stopDownloadButton.progress = progress;
        if (progress == 1) {
            self.downloadButton.state = kPKDownloadButtonState_Downloaded;
            self.imageView.hidden = NO;
        }
    }
}

Appearance customization:

#import "UIImage+PKDownloadButton.h"
#import "UIButton+PKDownloadButton.h"

[self.downloadButton.downloadedButton cleanDefaultAppearance];
[self.downloadButton.downloadedButton setBackgroundImage:[UIImage buttonBackgroundWithColor:[UIColor redColor]]
forState:UIControlStateNormal];
[self.downloadButton.downloadedButton setBackgroundImage:[UIImage highlitedButtonBackgroundWithColor:[UIColor redColor]]
forState:UIControlStateHighlighted];
[self.downloadButton.downloadedButton setTitle:@"delete" forState:UIControlStateNormal];
[self.downloadButton.downloadedButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
[self.downloadButton.downloadedButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];

self.downloadButton.stopDownloadButton.tintColor = [UIColor blackColor];
self.downloadButton.stopDownloadButton.filledLineStyleOuter = YES;

self.downloadButton.pendingView.tintColor = [UIColor orangeColor];
self.downloadButton.pendingView.radius = 24.f;
self.downloadButton.pendingView.emptyLineRadians = 2.f;
self.downloadButton.pendingView.spinTime = 3.f;

[self.downloadButton.startDownloadButton cleanDefaultAppearance];
[self.downloadButton.startDownloadButton setImage:[UIImage imageNamed:@"download_default"] forState:UIControlStateNormal];

Requirements

Requires iOS SDK version > 8.0

Installation

DownloadButton is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "DownloadButton"

Author

Pavel Katunin, wk.katunin@gmail.com

License

DownloadButton is available under the Apache License, Version 2.0. See the LICENSE file for more info.