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MatomoTracker (former PiwikTracker) iOS SDK

The MatomoTracker is an iOS, tvOS and macOS SDK for sending app analytics to a Matomo server. MatomoTracker can be used from Swift and Objective-C.

Fancy help improve this SDK? Check this list to see what is left and can be improved.

Installation

The MatomoTracker can be installed via CocoaPods, Carthage and the Swift Package Manager. In every file you want to use the MatomoTracker, don't forget to import the framework with import MatomoTracker.

pod 'MatomoTracker', '~> 7.5'

github "matomo-org/matomo-sdk-ios"

Usage

Matomo Instance

The Matomo iOS SDK doesn't provide a instance of the PiwikTracker. In order to be able to track data you have to create an instance first.

let matomoTracker = MatomoTracker(siteId: "23", baseURL: URL(string: "https://demo2.matomo.org/piwik.php")!)

The siteId is the ID that you can get if you add a website within the Matomo web interface. The baseURL it the URL to your Matomo web instance and has to include the "piwik.php" or "matomo.php" string.

You can either pass around this instance, or add an extension to the MatomoTracker class and add a shared instance property.

extension MatomoTracker {
    static let shared: MatomoTracker = MatomoTracker(siteId: "1", baseURL: URL(string: "https://example.com/piwik.php")!)
}

The siteId is the ID that you can get if you add a website within the Matomo web interface. The baseURL is the URL to your Matomo web instance and has to include the "piwik.php" or "matomo.php" string.

You can use multiple instances within one application.

Opting Out

The MatomoTracker SDK supports opting out of tracking. Please use the isOptedOut property of the MatomoTracker to define if the user opted out of tracking.

matomoTracker.isOptedOut = true

Tracking Page Views

The MatomoTracker can track hierarchical screen names, e.g. screen/settings/register. Use this to create a hierarchical and logical grouping of screen views in the Matomo web interface.

matomoTracker.track(view: ["path","to","your","page"])

You can also set the url of the page.

let url = URL(string: "https://matomo.org/get-involved/")
matomoTracker.track(view: ["community","get-involved"], url: url)

Tracking Events

Events can be used to track user interactions such as taps on a button. An event consists of four parts:

• Category
• Action
• Name (optional, recommended)
• Value (optional)

matomoTracker.track(eventWithCategory: "player", action: "slide", name: "volume", value: 35.1)

This will log that the user slid the volume slider on the player to 35.1%.

Tracking search

The MatomoTracker can track how users use your app internal search. You can track what keywords were searched for, what categories they use, the number of results for a certain search and what searches resulted in no results.

matomoTracker.trackSearch(query: "Best mobile tracking", category: "Technology", resultCount: 15)

Custom Dimension

The Matomo SDK currently supports Custom Dimensions for the Visit Scope. Using Custom Dimensions you can add properties to the whole visit, such as "Did the user finish the tutorial?", "Is the user a paying user?" or "Which version of the Application is being used?" and such. Before sending custom dimensions please make sure Custom Dimensions are properly installed and configured. You will need the ID of your configured Dimension.

After that you can set a new Dimension,

matomoTracker.set(value: "1.0.0-beta2", forIndex: 1)

or remove an already set dimension.

matomoTracker.remove(dimensionAtIndex: 1)

Dimensions in the Visit Scope will be sent along every Page View or Event. Custom Dimensions are not persisted by the SDK and have to be re-configured upon application startup.

Custom User ID

To add a custom User ID, simply set the value you'd like to use on the userId field of the tracker:

matomoTracker.userId = "coolUsername123"

All future events being tracked by the SDK will be associated with this userID, as opposed to the default UUID created for each Visitor.

Custom Visitor ID persisted on app starts

MatomoTracker will generate an _id upon first usage and will use this value to recognize the current visitor. This _id is persisted over app starts.

If you want to set your own visitor id, you can set your own visitor id with the forcedVisitorId field. Make sure you use a 16 character long hexadecimal string. The forcedVisitorId is persisted over app starts.

matomoTracker.forcedVisitorId = "0123456789abcdef"

Because the SDK persists this visitor id on app start, then we recommend to ask users for consent before tracking your app users.

Campaign Tracking

The Matomo iOS SDK supports campaign tracking.

matomoTracker.trackCampaign(name: "campaign_name", keyword: "campaign_keyword")

Content Tracking

The Matomo iOS SDK supports content tracking.

matomoTracker.trackContentImpression(name: "preview-liveaboard", piece: "Malaysia", target: "https://dummy.matomo.org/liveaboard/malaysia")
matomoTracker.trackContentInteraction(name: "preview-liveaboard", interaction: "tap", piece: "Malaysia", target: "https://dummy.matomo.org/liveaboard/malaysia")

Goal Tracking

The Matomo iOS SDK supports goal tracking.

matomoTracker.trackGoal(id: 1, revenue: 99.99)

Order Tracking

The Matomo iOS SDK supports order tracking.

let items = [
  OrderItem(sku: "product_sku_1", name: "iPhone Xs", category: "phone", price: 999.99, quantity: 1),
  OrderItem(sku: "product_sku_2", name: "iPhone Xs Max", category: "phone", price: 1199.99, quantity: 1)
]

matomoTracker.trackOrder(id: "order_id_1234", items: items, revenue: 2199.98, subTotal: 2000, tax: 190.98, shippingCost: 9)

Advanced Usage

Manual dispatching

The MatomoTracker will dispatch events every 30 seconds automatically. If you want to dispatch events manually, you can use the dispatch() function.

Session Management

The MatomoTracker starts a new session whenever the application starts. If you want to start a new session manually, you can use the startNewSession() function. You can, for example, start a new session whenever the user enters the application.

func applicationWillEnterForeground(_ application: UIApplication) {
  matomoTracker.startNewSession()
}

Logging

The MatomoTracker per default logs warning and error messages to the console. You can change the LogLevel.

matomoTracker.logger = DefaultLogger(minLevel: .verbose)
matomoTracker.logger = DefaultLogger(minLevel: .debug)
matomoTracker.logger = DefaultLogger(minLevel: .info)
matomoTracker.logger = DefaultLogger(minLevel: .warning)
matomoTracker.logger = DefaultLogger(minLevel: .error)

You can also write your own Logger and send the logs wherever you want. Just write a new class/struct and let it conform to the Logger protocol.

Custom User Agent

The MatomoTracker will create a default user agent derived from the WKWebView user agent. You can instantiate the MatomoTracker using your own user agent.

let matomoTracker = MatomoTracker(siteId: "5", baseURL: URL(string: "http://your.server.org/path-to-matomo/piwik.php")!, userAgent: "Your custom user agent")

Sending custom events

Instead of using the convenience functions for events and screen views for example you can create your event manually and even send custom tracking parameters. This feature isn't available from Objective-C.

func sendCustomEvent() {
  guard let matomoTracker = MatomoTracker.shared else { return }
  let downloadURL = URL(string: "https://builds.matomo.org/piwik.zip")!
  let event = Event(tracker: matomoTracker, action: ["menu", "custom tracking parameters"], url: downloadURL, customTrackingParameters: ["download": downloadURL.absoluteString])
  matomoTracker.track(event)
}

All custom events will be URL-encoded and dispatched along with the default Event parameters. Please read the Tracking API Documentation for more information on which parameters can be used.

Also: You cannot override Custom Parameter keys that are already defined by the Event itself. If you set those keys in the customTrackingParameters they will be discarded.

Automatic url generation

You can define the url property on every Event. If none is defined, the SDK will try to generate a url based on the contentBase of the MatomoTracker. If the contentBase is nil, no url will be generated. If the contentBase is set, it will append the actions of the event to it and use it as the url. Per default the contentBase is generated using the application bundle identifier. For example http://org.matomo.skd. This will not result in resolvable urls, but enables the backend to analyse and structure them.

Event dispatching

Whenever you track an event or a page view it is stored in memory first. In every dispatch run a batch of those events are sent to the server. If the device is offline or the server doesn't respond these events will be kept and resent at a later time. Events currently aren't stored on disk and will be lost if the application is terminated. #137

Contributing

Please read CONTRIBUTING.md for details.

License

MatomoTracker is available under the MIT license.