Summary

This is the iOS SDK of adjust™. You can read more about adjust™ at adjust.com.

Example app

There is an example app inside the example directory. You can open the Xcode project to see an example on how the adjust SDK can be integrated.

Basic integration

We will describe the steps to integrate the adjust SDK into your iOS project. We are going to assume that you use Xcode for your iOS development.

If you're using CocoaPods, you can add the following line to your Podfile and continue with step 3:

pod 'Adjust', :git => 'git://github.com/adjust/ios_sdk.git', :tag => 'v4.0.5'

1. Get the SDK

Download the latest version from our releases page. Extract the archive into a directory of your choice.

2. Add it to your project

In Xcode's Project Navigator locate the Supporting Files group (or any other group of your choice). From Finder, drag the Adjust subdirectory into Xcode's Supporting Files group.

In the dialog Choose options for adding these files make sure to check the checkbox to Copy items if needed and select the radio button to Create groups.

3. Add the AdSupport and iAd framework

Select your project in the Project Navigator. In the left hand side of the main view, select your target. In the tab Build Phases expand the group Link Binary with Libraries. On the bottom of that section click on the + button. Select the AdSupport.framework and click the Add button. Repeat the same steps to add the iAd.framework. Change the Status of both frameworks to Optional.

4. Integrate Adjust into your app

To start with, we'll set up basic session tracking.

Basic Setup

In the Project Navigator, open the source file of your application delegate. Add the import statement at the top of the file, then add the following call to Adjust in the didFinishLaunching or didFinishLaunchingWithOptions method of your app delegate:

#import "Adjust.h"
// ...
NSString *yourAppToken = @"{YourAppToken}";
NSString *environment = ADJEnvironmentSandbox;
ADJConfig *adjustConfig = [ADJConfig configWithAppToken:yourAppToken
                                            environment:environment];
[Adjust appDidLaunch:adjustConfig];

Replace {YourAppToken} with your app token. You can find this in your dashboard.

Depending on whether you build your app for testing or for production, you must set environment with one of these values:

NSString *environment = ADJEnvironmentSandbox;
NSString *environment = ADJEnvironmentProduction;

Important: This value should be set to ADJEnvironmentSandbox if and only if you or someone else is testing your app. Make sure to set the environment to ADJEnvironmentProduction just before you publish the app. Set it back to ADJEnvironmentSandbox when you start developing and testing it again.

We use this environment to distinguish between real traffic and test traffic from test devices. It is very important that you keep this value meaningful at all times! This is especially important if you are tracking revenue.

Adjust Logging

You can increase or decrease the amount of logs you see in tests by calling setLogLevel: on your ADJConfig instance with one of the following parameters:

[adjustConfig setLogLevel:ADJLogLevelVerbose]; // enable all logging
[adjustConfig setLogLevel:ADJLogLevelDebug];   // enable more logging
[adjustConfig setLogLevel:ADJLogLevelInfo];    // the default
[adjustConfig setLogLevel:ADJLogLevelWarn];    // disable info logging
[adjustConfig setLogLevel:ADJLogLevelError];   // disable warnings as well
[adjustConfig setLogLevel:ADJLogLevelAssert];  // disable errors as well

5. Build your app

Build and run your app. If the build succeeds, you should carefully read the SDK logs in the console. After the app launched for the first time, you should see the info log Install tracked.

Troubleshooting

If your build failed with the error Adjust requires ARC, it looks like your project is not using ARC. In that case we recommend transitioning your project to use ARC. If you don't want to use ARC, you have to enable ARC for all source files of adjust in the target's Build Phases:

Expand the Compile Sources group, select all adjust files (Adjust, ADJ..., ...+ADJAdditions) and change the Compiler Flags to -fobjc-arc (Select all and press the Return key to change all at once).

Additional features

Once you integrate the adjust SDK into your project, you can take advantage of the following features.

6. Set up event tracking

You can use adjust to track events. Lets say you want to track every tap on a particular button. You would create a new event token in your dashboard, which has an associated event token - looking something like abc123. In your button's buttonDown method you would then add the following lines to track the tap:

ADJEvent *event = [ADJEvent eventWithEventToken:@"abc123"];
[Adjust trackEvent:event];

When tapping the button you should now see Event tracked in the logs.

The event instance can be used to configure the event even more before tracking it.

Add callback parameters

You can register a callback URL for your events in your dashboard. We will send a GET request to that URL whenever the event gets tracked. You can add callback parameters to that event by calling addCallbackParameter on the event before tracking it. We will then append these parameters to your callback URL.

For example, suppose you have registered the URL http://www.adjust.com/callback then track an event like this:

ADJEvent *event = [ADJEvent eventWithEventToken:@"abc123"];
[event addCallbackParameter:@"key" value:@"value"];
[event addCallbackParameter:@"foo" value:@"bar"];
[Adjust trackEvent:event];

In that case we would track the event and send a request to:

http://www.adjust.com/callback?key=value&foo=bar

It should be mentioned that we support a variety of placeholders like {idfa} that can be used as parameter values. In the resulting callback this placeholder would be replaced with the ID for Advertisers of the current device. Also note that we don't store any of your custom parameters, but only append them to your callbacks. If you haven't registered a callback for an event, these parameters won't even be read.

You can read more about using URL callbacks, including a full list of available values, in our callbacks guide.

Track revenue

If your users can generate revenue by tapping on advertisements or making in-app purchases you can track those revenues with events. Lets say a tap is worth one Euro cent. You could then track the revenue event like this:

ADJEvent *event = [ADJEvent eventWithEventToken:@"abc123"];
[event setRevenue:0.01 currency:@"EUR"];
[Adjust trackEvent:event];

This can be combined with callback parameters of course.

Please note that while the currency token must be set, adjust will not perform a currency conversion. You should always transmit revenues in the currency that you have set in your adjust dashboard.

You can read more about revenue and event tracking in the event tracking guide.

Revenue deduplication

You can also pass in an optional transaction ID to avoid tracking duplicate revenues. The last ten transaction IDs are remembered and revenue events with duplicate transaction IDs are skipped. This is especially useful for in-app purchase tracking. See an example below.

If you want to track in-app purchases, please make sure to call trackEvent after finishTransaction in paymentQueue:updatedTransaction only if the state changed to SKPaymentTransactionStatePurchased. That way you can avoid tracking revenue that is not actually being generated.

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
    for (SKPaymentTransaction *transaction in transactions) {
        switch (transaction.transactionState) {
            case SKPaymentTransactionStatePurchased:
                [self finishTransaction:transaction];

                ADJEvent *event = [ADJEvent eventWithEventToken:...];
                [event setRevenue:... currency:...];
                [event setTransactionId:transaction.transactionIdentifier]; // avoid duplicates
                [Adjust trackEvent:event];

                break;
            // more cases
        }
    }
}

7. Set up deep link reattributions

You can set up the adjust SDK to handle deep links that are used to open your app via a custom URL scheme. We will only read certain adjust specific parameters. This is essential if you are planning to run retargeting or re-engagement campaigns with deep links.

In the Project Navigator open the source file your Application Delegate. Find or add the method openURL and add the following call to adjust:

- (BOOL)  application:(UIApplication *)application openURL:(NSURL *)url
    sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    [Adjust appWillOpenUrl:url];
}

8. Enable event buffering

If your app makes heavy use of event tracking, you might want to delay some HTTP requests in order to send them in one batch every minute. You can enable event buffering with your ADJConfig instance:

[adjustConfig setEventBufferingEnabled:YES];

9. Implement the attribution callback

You can register a delegate callback to be notified of tracker attribution changes. Due to the different sources considered for attribution, this information can not by provided synchronously. Follow these steps to implement the optional delegate protocol in your app delegate:

Please make sure to consider our applicable attribution data policies.

1. Open AppDelegate.h and add the import and the AdjustDelegate declaration.

   #import "Adjust.h"
   
   @interface AppDelegate : UIResponder <UIApplicationDelegate, AdjustDelegate>

2. Open AppDelegate.m and add the following delegate callback function to your app delegate implementation.

   - (void)adjustAttributionChanged:(ADJAttribution *)attribution {
   }

3. Set the delegate with your ADJConfig instance:

   [adjustConfig setDelegate:self];

The delegate function will get when the SDK receives final attribution data. Within the delegate function you have access to the attribution parameter. Here is a quick summary of its properties:

• NSString trackerToken the tracker token of the current install.
• NSString trackerName the tracker name of the current install.
• NSString network the network grouping level of the current install.
• NSString campaign the campaign grouping level of the current install.
• NSString adgroup the ad group grouping level of the current install.
• NSString creative the creative grouping level of the current install.

10. Disable tracking

You can disable the adjust SDK from tracking any activities of the current device by calling setEnabled with parameter NO. This setting is remembered between sessions, but it can only be activated after the first session.

[Adjust setEnabled:NO];

You can check if the adjust SDK is currently enabled by calling the function isEnabled. It is always possible to activate the adjust SDK by invoking setEnabled with the enabled parameter as YES.

11. Partner parameters

You can also add parameters to be transmitted to network partners, for the integrations that have been activated in your adjust dashboard.

This works similarly to the callback parameters mentioned above, but can be added by calling the addPartnerParameter method on your ADJEvent instance.

ADJEvent *event = [ADJEvent eventWithEventToken:@"abc123"];
[event addPartnerParameter:@"key" value:@"value"];
[Adjust trackEvent:event];

You can read more about special partners and these integrations in our guide to special partners.

License

The adjust-SDK is licensed under the MIT License.

Copyright (c) 2012-2014 adjust GmbH, http://www.adjust.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.