My app was running smoothly but I am getting this error now.I am getting an error in Kapt Debug Kotlin. I have update versions of dependencies in gradle file. still facing this issue. How it can be resolved? I saw somewhere to see your room database , dao and data class. still not able to figure out what is the issue.
The error is showing this file
ROOM DATABASE
@Database(entities = [Transaction::class], version = 1, exportSchema = false)
abstract class MoneyDatabase : RoomDatabase(){
abstract fun transactionListDao():transactionDetailDao
companion object {
// Singleton prevents multiple instances of database opening at the
// same time.
@Volatile
private var INSTANCE: MoneyDatabase? = null
fun getDatabase(context: Context): MoneyDatabase {
// if the INSTANCE is not null, then return it,
// if it is, then create the database
return INSTANCE ?: synchronized(this) {
val instance = Room.databaseBuilder(
context.applicationContext,
MoneyDatabase::class.java,
"transaction_database"
).build()
INSTANCE = instance
// return instance
instance
}
}
}
}
DAO
@Dao
interface transactionDetailDao {
@Insert(onConflict = OnConflictStrategy.IGNORE)
suspend fun insert(transaction : Transaction)
@Delete
suspend fun delete(transaction : Transaction)
@Update
suspend fun update(transaction: Transaction)
@Query("SELECT * FROM transaction_table ORDER BY id ASC")
fun getalltransaction(): LiveData<List<Transaction>>
}
DATA CLASS
enum class Transaction_type(){
Cash , debit , Credit
}
enum class Type(){
Income, Expense
}
@Entity(tableName = "transaction_table")
data class Transaction(
val name : String,
val amount : Float,
val day : Int,
val month : Int,
val year : Int,
val comment: String,
val datePicker: String,
val transaction_type : String,
val category : String,
val recurring_from : String,
val recurring_to : String
){
@PrimaryKey(autoGenerate = true) var id :Long=0
}
2
Answers
The error is resolved. I was using the kotlin version 1.6.0. I reduced it to 1.4.32. As far as I understood, above(latest) version of Kotlin along with Room and coroutines doesn’t work well.
I believe that your issue is due to the use of an incorrect class being inadvertently used, a likely culprit being Transaction as that it also a Room class
Perhaps in transactionDetailDao (although it might be elsewhere)
See if you have
import androidx.room.Transaction
? (or any other imports with Transaction)?If so delete or comment out the import
As an example with, and :-
And with the import commented out :-
Imported from github, had a play issue definitely appears to be with co-routines. commented out suspends in the Dao :-
Compiled ok and ran and had a play e.g. :-