Tracking Uninstalls

To let Singular track your app's uninstalls:

1. Make sure uninstall tracking is enabled for your app in Singular. See Setting Up iOS Install Tracking for instructions.
2. In the app, send Singular the device token returned from the Apple Push Notification Service (APNS). To pass the device token to Singular use the registerDeviceTokenForUninstall or registerDeviceToken method. Do this before the Singular StartSession call.

If your app doesn't support push notifications yet, see Apple's guide to implementing APNS.

NSString* apns = @"b0adf7c9730763f88e1a048e28c68a9f806ed032fb522debff5bfba010a9b052";
NSData* data = [apns dataUsingEncoding:NSUTF8StringEncoding];
[Singular registerDeviceTokenForUninstall:data];

Using the Singular SDK JavaScript Interface

Singular provides a JavaScript interface that you can use in order to call Singular from within javaScript code in your app.

For example, if you set up the JavaScript interface, you can send events to Singular from JavaScript code as follows:

Singular.event('event'); 
Singular.event('test', JSON.stringify({"a1":"bar",
    "a2":"boo", "a3":"baz"})); 

The interface supports the following SDK methods:

• setCustomUserID
• unsetCustomUserID
• event
• revenue

Enabling the JavaScript Interface

To enable the JavaScript interface when using WKWebView , you need to add some code to the webView method of the WKNavigationDelegate protocol (this protocol helps you implement custom behaviors triggered when a web view handles a navigation request).

Swift:

extension ViewController: WKNavigationDelegate { 
 func webView(_: WKWebView, decidePolicyFor: WKNavigationAction, 
    decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { 

// Singular handler 
 let js = "typeof(Singular)" 
 webView.evaluateJavaScript(js) { (result, error) -> Void in 
     if let resultString = result as? String { 
         if resultString.isEqual("undefined") { 
         do { 
             let contents = try String(contentsOfFile: 
                 Bundle.main.path(forResource: "Singular", ofType: "js")!) 
         self.webView.evaluateJavaScript(contents, 
             completionHandler: nil) 
         } catch { 
         } 
     } 
                 else { 
                     print(decidePolicyFor.request) 
                     Singular.processJSRequestWK(self.webView, 
                         withURL:decidePolicyFor.request) 
                 } 
             }  
         } 
      
 // rest of your code goes here   
} 

If you are using the older UIWebView (deprecated in iOS 8.0), update the method webView:shouldStartLoadWithRequest:navigationType: in your UIWebViewDelegate file as follows:

Objective-C:

- (BOOL)webView:(UIWebView *)webView 
    shouldStartLoadWithRequest:(NSURLRequest *)request
    navigationType:(UIWebViewNavigationType)navigationType{ 
   if([[webView stringByEvaluatingJavaScriptFromString:@"typeof(Singular)"] isEqualToString:@"undefined"]) { 

   // Inject Singular.js into the HTML 
   [webView stringByEvaluatingJavaScriptFromString:[NSString
       stringWithContentsOfFile:[[NSBundle mainBundle] 
       pathForResource:@"Singular" ofType:@"js"] usedEncoding:nil error:nil]]; 
   } else { 
   // process request in Singular.js 
   [Singular processJSRequest:webView withURL:request]; 
   } 

   // The rest of your code goes here 

   return true; 
}

GDPR Compliance

The Singular SDK provides several methods to help you comply with GDPR policies and let Singular know about user consent or non-consent for tracking.

[Singular trackingOptIn];

Singular.trackingOptIn()

[Singular trackingUnder13];

Singular.trackingUnder13()

[Singular stopAllTracking];

Singular.stopAllTracking()

[Singular resumeAllTracking];

Singular.resumeAllTracking()

[Singular isAllTrackingStopped]; // returns true/false

Singular.isAllTrackingStopped() // returns true/false