android - Realm Kotlin - 删除 Realm 对象

Question

https://www.mongodb.com/docs/realm/sdk/kotlin/realm-database/delete/delete-all-objects-of-a-type/

我正在我的项目中学习新的 kotlin-realm。但我不知道如何删除对象。它一直显示错误 Caused by: io.realm.internal.interop.RealmCoreNotInATransactionException: [5]: Must be in a write transaction

这是代码:

class MainActivity : AppCompatActivity() {
    private lateinit var binding: ActivityMainBinding
    private val realm by lazy { (application as CustomApplication).realm }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        realm.writeBlocking {
            copyToRealm(Buku(
                name = "Perjuangan Menjual Baju"
            ))
            copyToRealm(Buku(
                name = "Perang Saudara"
            ))
        }

        val buku = realm.query<Buku>("name BEGINSWITH $0", "pera")
        Log.i("AOEU", "buku = $buku")

        CoroutineScope(Dispatchers.Main).launch {
            val query = realm.query<Buku>().find()
            realm.write {
                delete(query)
            }
        }
    }
}

Answer 1

经过几天的寻找解决方案。我刚刚意识到我的代码中唯一的错误是

val query = realm.query().find()

应该替换为

val query = this.query().find()