GA4 - Android - Java - view_item

// Products can be instrumented as an array of items that can be added to prescribed ecommerce events.

//To measure how many times product details are viewed, log a view_item event whenever a user views a product’s details screen.

// A pair of jeggings (product1)
Bundle itemJeggings = new Bundle();
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_ID, "SKU_123");                     //Item ID (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_NAME, "jeggings");                  //Item Name (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_CATEGORY, "pants");                 //Item category (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_CATEGORY2, "sub-cat1");             //Item sub-category (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_CATEGORY3, "sub-cat2");             //Item sub-category (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_CATEGORY4, "sub-cat3");             //Item sub-category (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_CATEGORY5, "sub-cat4");             //Item sub-category (context-specific) (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_VARIANT, "black");                  //Item variant (String).
itemJeggings.putString(FirebaseAnalytics.Param.ITEM_BRAND, "Google");                   //Item brand. The parameter expects a string value
itemJeggings.putDouble(FirebaseAnalytics.Param.PRICE, 9.99);                            //Product price (double). Expecting a double value

Bundle viewItemParams = new Bundle();
viewItemParams.putString(FirebaseAnalytics.Param.CURRENCY, "USD");      //Currency of the purchase or items associated with the event, in 3-letter ISO_4217 format (String). The parameter expects a string value set with BaseBundle.putString(String, String)
viewItemParams.putDouble(FirebaseAnalytics.Param.VALUE, 9.99);
        new Parcelable[] { itemJeggings });                         //A context-specific numeric value which is accumulated automatically for each event type. Value should be specified with BaseBundle.putLong(String, long) or BaseBundle.putDouble(String, double). Note: Values for pre-defined currency-related events should be accompanied by a CURRENCY param.
viewItemParams.putParcelableArray(FirebaseAnalytics.Param.ITEMS,        //The list of items involved in the e-commerce action. (Parcelable[]). The parameter expects a Parcelable Array set with Bundle.putParcelableArray(String, Parcelable[]):

analytics.logEvent(FirebaseAnalytics.Event.VIEW_ITEM, viewItemParams);