Android Kotlin上报Analytics PURCHASE事件含items数组时Tag Manager报错

问题场景 #

使用Kotlin开发Android应用，记录Firebase Analytics的PURCHASE事件时，仅当传入FirebaseAnalytics.Param.ITEMS数组参数时触发如下错误：

E/GoogleTagManager: Internal error - Function call: __md_main
    Type not supported: class [Landroid.os.Parcelable;
E/GoogleTagManager: Internal error - Function call: __md_main
    Type not supported: class [Landroid.os.Parcelable;
E/GoogleTagManager: Internal error - Function call: __fm_sendFirebaseEvent
    Type not supported: class [Landroid.os.Parcelable;

相关代码 #

val firebaseAnalytics = Firebase.analytics

val itemJeggings = Bundle().apply {
    putString(FirebaseAnalytics.Param.ITEM_ID, "SKU_123")
    putString(FirebaseAnalytics.Param.ITEM_NAME, "jeggings")
    putString(FirebaseAnalytics.Param.ITEM_CATEGORY, "pants")
    putString(FirebaseAnalytics.Param.ITEM_VARIANT, "black")
    putString(FirebaseAnalytics.Param.ITEM_BRAND, "Google")
    putDouble(FirebaseAnalytics.Param.PRICE, 9.99)
}

val itemJeggingsCart = Bundle(itemJeggings).apply {
    putLong(FirebaseAnalytics.Param.QUANTITY, 2)
}

firebaseAnalytics.logEvent(FirebaseAnalytics.Event.PURCHASE) {
    param(FirebaseAnalytics.Param.TRANSACTION_ID, "T12345")
    param(FirebaseAnalytics.Param.AFFILIATION, "Google Store")
    param(FirebaseAnalytics.Param.CURRENCY, "USD")
    param(FirebaseAnalytics.Param.VALUE, 14.98)
    param(FirebaseAnalytics.Param.TAX, 2.58)
    param(FirebaseAnalytics.Param.SHIPPING, 5.34)
    param(FirebaseAnalytics.Param.COUPON, "SUMMER_FUN")
    param(FirebaseAnalytics.Param.ITEMS, arrayOf(itemJeggingsCart))
}

解决方案 #

错误原因是ITEMS参数传入了Bundle[]数组，而Firebase Analytics要求该参数接收ArrayList<Bundle>类型。只需将数组转换为ArrayList即可：

修改ITEMS参数的传入代码：

param(FirebaseAnalytics.Param.ITEMS, arrayListOf(itemJeggingsCart))

若有多个商品，直接添加到ArrayList中：

val items = arrayListOf(
    itemJeggingsCart,
    // 其他商品Bundle
)
param(FirebaseAnalytics.Param.ITEMS, items)

内容的提问来源于stack exchange，提问作者Sergio Rivas