Adding On-Site Messaging is as easy as it gets. To achieve this tailor made experience for the user you just need to:

• Request access to On-Site Messaging
• Create the native view
• Set the parameters
• Render the view

If you are using a version of the SDK prior to 2.3.2, to be able to integrate On-site Messaging our team needs to enable the access for it. You can request access through your dedicated Delivery Manager. Please refer the Merchant ID (MID) and/or the name of your brand/company (merchant name), the countries you request access and the environment (playground or production).

The On-Site Messaging native view in Android is called KlarnaOSMView. You can create KlarnaOSMView programmatically or inflate it from an XML file. Additionally you can also set the parameters from the XML.

You can create the native view programmatically and add it to your layout with your desired layout options.

// Create an instance of OSM view
val osmView = KlarnaOSMView(context)

// Add it to your layout with desired layout parameters
val osmLayoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT)
containerViewGroup.addView(osmView, osmLayoutParams)

You can also add the native view in your XML like below:

<com.klarna.mobile.sdk.api.osm.KlarnaOSMView
    android:id="@+id/klarnaOsmView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    ... />

Now you can access the view like this:

val osmView = findViewById<KlarnaOSMView>(R.id.klarnaOsmView)

Parameters used for KlarnaOSMView are set as variables of the View instance or as attributes in the XML declaration. These can be identifier string values, amount or enumeration values (parameters marked with * are mandatory).

Environment enumeration will be used to define whether to use a demo placement or fetch placement configurations from either playground or production.

Region enumeration will be used to define which endpoint to connect as a source for the placement configurations.

Theme enumeration will be used to define which style of OSM to be used, depending on either the app’s configuration or the system setting. Each style has a predefined set of values for background color, text color, text size, ... that will be used to style the OSM view.

By using KlarnaOSMStyleConfiguration you can customize the appearance of the OSM view to some extend. As of now, you can customize the following:

• Background color
• Text color
• Text size
• Text size unit
• Text font

To set a custom style for the OSM view you can do like the following:

val klarnaOSMStyleConfiguration = KlarnaOSMStyleConfiguration.Builder()
    .setBackgroundColor(0xFFFFFF)
    .setTextStyle(
        KlarnaTextStyleConfiguration.Builder()
            .setTextColor(0x000000)
            .setTextSize(unit = TypedValue.COMPLEX_UNIT_SP, size = 16f)
            .setTextFont(ResourcesCompat.getFont(this, R.font.merriweather_regular)) // assuming that there's a font file in the 'res/font' directory with the name 'merriweather_regular'
            .build()
    )
    .build()

All of the parameters for On-Site Messaging are stored as variables on the KlarnaOSMView instance. The required ones need to be set before calling the render method, otherwise the RenderResult will return a validation error for the missing parameter.

Most of the parameters can be set either programmatically or in the XML layout file. The only two exceptions are hostActivity and styleConfiguration that you can only set them programatically. In both cases, the parameters will be stored in the View instance.

osmView.clientId = "<client-id>"
osmView.placementKey = "<placement-key>"
osmView.locale = "en-US"
osmView.purchaseAmount = 10000
osmView.environment = KlarnaOSMEnvironment.PRODUCTION
osmView.region = KlarnaOSMRegion.NA
osmView.theme = KlarnaOSMTheme.DARK
osmView.styleConfiguration = ...
osmView.hostActivity = this // assuming that 'this' refers to the current Activity

<com.klarna.mobile.sdk.api.osm.KlarnaOSMView
    ...
    app:klarnaOsmClientId="<client-id>"
    app:klarnaOsmPlacementKey="<placement-key>"
    app:klarnaOsmLocale="en-US"
    app:klarnaOsmPurchaseAmount="1000"
    app:klarnaOsmEnvironment="production"
    app:klarnaOsmRegion="na"
    app:klarnaOsmTheme="dark"/>

Once you have set all the parameters to the KlarnaOSMView, you are ready to render the actual placement view. To do that, you need to call the render method of the view with the RenderResult callback parameter.

Once the render method is called, first the view will validate all the parameters. If there is a missing parameter the RenderResult callback will be invoked with corresponding error values. If parameters are valid then the view will try to fetch placement configuration from On-Site Messaging API. Any errors or failures from this network request will also invoke RenderResult callback if necessary. If the placement configuration is fetched and valid then the KlarnaOSMView will render it and invoke the RenderResult callback with a null value.

The RenderResult callback can be used for logging purposes or to make the KlarnaOSMView visible or not, according to the error.

osmView.render(RenderResult { error ->
    ...
})

Similar to other parts of the SDK, On-Site Messaging also makes use of the KlarnaMobileSDKError class. To read more about the error handling and error object properties refer to the On-Site Messaging Error Handling guide.

These are the predefined names for errors that can happen during the placement render flow. These names are available as static variables inside KlarnaOSMError class.