kaleidot725
4/11/2020 - 8:20 AM

2020/04/08 Firebase Cloud Firestore を使ってデータを追加・削除・取得する No6

2020/04/08 Firebase Cloud Firestore を使ってデータを追加・削除・取得する No6

suspend fun fetchTask(limit: Long): List<Task> {
    try {
        val collection = database.collection("CollectionName")
        val documents = collection.limit(limit).get().documents
        return documents.map { it.data }.mapNotNull { it?.toTask() }
    } catch (e: Exception) {
        return listOf()
    }
}
fun Map<String, Any>.toTask(): Task {
    val id = this["id"] as String
    val time = this["time"] as Long
    val name = this["name"] as String
    return Task(id, time, name)
}