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README.md

The SoundCloud API for Cocoa

So you want to share your tracks in your iOS Application to SoundCloud? With this project you only need a few lines of code for doing that. The SoundCloud API supports iOS from Version 4.0 and MacOS X from Leopard (10.6). It uses SoundClouds OAuth2 API and henceforth includes the NXOAuth2Client project.

Afraid of doing the journey alone? Don't be, there's a lot of places where you can find help:

Please keep in mind that all of this is under heavy development, and things might change from time to time. Please update your frameworks often, and keep this space in mind.

We document the changes to the different versions. If you've used a previous version, please read it.

This guide assumes a few things:

  • You are using Xcode 4
  • You are using Git.

Demo

Cocoa SoundCloud API from Tobias on Vimeo.

Setup

We're taking a fresh new iOS Project as an example. Integration into an existing project and/or a Desktop project should be similar.

In the Terminal

  1. Go to your project directory.

  2. Add the required GIT Submodules

    // For the API
    git submodule add git://github.com/nxtbgthng/OAuth2Client.git
    git submodule add git://github.com/soundcloud/CocoaSoundCloudAPI.git
    
    // For the UI (iOS only)
    git submodule add git://github.com/nxtbgthng/JSONKit.git
    git submodule add git://github.com/nxtbgthng/OHAttributedLabel.git
    git submodule add git://github.com/soundcloud/CocoaSoundCloudUI.git
    

In Xcode

  1. Create a Workspace containing all those submodules added above.

  2. To be able to find the Headers, you still need to add ../** (or ./** depending on your setup) to the Header Search Path of the main project.

  3. Now the Target needs to know about the new libraries it should link against. So in the Project, select the Target, and in Build Phases go to the Link Binary with Libraries section. Add the following:

    • libSoundCloudAPI.a (SoundCloudAPI.framework on Mac OS X)
    • libOAuth2Client.a (OAuth2Client.framework on Mac OS X)
    • libJSONKit.a (iOS only)
    • libOHAttributedLabel.a (iOS only)
    • libSoundCloudUI.a (iOS only)
    • QuartzCore.framework
    • AddressBook.framework
    • AddressBookUI.framework
    • CoreLocation.framework
    • Security.framework
    • CoreGraphics.framework
    • CoreText.framework
  4. Next step is to make sure that the Linker finds everything it needs: So go to the Build settings of the project and add the following to Other Linker Flags

    -all_load -ObjC
    
  5. On iOS we need a few graphics: Please move the SoundCloud.bundle from the CocoaSoundCloudUI/ directory to your Resources.

Yay, done! Congrats! Everything is set up, and you can start using it.

Usage

The Basics

You only need to #import "SCUI.h" to include the UI headers (or #import <SoundCloudAPI/SCAPI.h> on Desktop).

Configure your App

To configure you App you have to set your App's Client ID, it's Client Secret and it's Redirect URL. The best way to do this is in the initialize class method in your app delegate.

+ (void)initialize;
{
    [SCSoundCloud  setClientID:@"<Client ID>"
                        secret:@"<Client Secret>"
                   redirectURL:[NSURL URLWithString:@"<Redirect URL>"]];
}

You will get your App's Client ID, it's Client Secret from the SoundCloud page where you registered your App. There you should register your App with it's name and a Redirect URL. That Redirect URL should comply to a protocol that is handled by your app. See this page on how to set up the protocol in your App. For the curious: in the wrapper we're using Redirect URL instead of Redirect URI because the underlying type is of NSURL.

Using the Share UI (iOS only)

To share a track you just have to create a SCShareViewController with the URL to the file you want to share and present it on the current view controller. After a successful upload, the track info can be accessed in the completion handler.

- (void)upload;
{
    NSURL *trackURL = // ... an URL to the audio file

    SCShareViewController *shareViewController;
    shareViewController = [SCShareViewController shareViewControllerWithFileURL:trackURL
                                                              completionHandler:^(NSDictionary *trackInfo, NSError *error){

                                        if (SC_CANCELED(error)) {
                                            NSLog(@"Canceled!");
                                        } else if (error) {
                                            NSLog(@"Ooops, something went wrong: %@", [error localizedDescription]);
                                        } else {
                                            // If you want to do something with the uploaded
                                            // track this is the right place for that.
                                            NSLog(@"Uploaded track: %@", trackInfo);
                                        }
    }];

    // If your app is a registered foursquare app, you can set the client id and secret.
    // The user will then see a place picker where a location can be selected.
    // If you don't set them, the user sees a plain plain text filed for the place.
    [shareViewController setFoursquareClientID:@"<foursquare client id>"
                                  clientSecret:@"<foursquare client secret>"];

    // We can preset the title ...
    [shareViewController setTitle:@"Funny sounds"];

    // ... and other options like the private flag.
    [shareViewController setPrivate:NO];

    // Now present the share view controller.
    [self presentModalViewController:shareViewController animated:YES];
}

Optionally you can preset set the title, a cover image, a creation date and a flag indicating if the track should be public or private. Look at SCShareViewController.h for details.

Using the API

If you want to provide your own UI for sharing a track or you want to use the SoundCloud API for other purposes, have a look at the General Usage or at Sharing.

Thats it!

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