这是我的DataManager类代码的一部分:Android Studio告诉我:(未解决的参考:上下文)
import android.content.Context
import android.database.sqlite.SQLiteDatabase
import android.database.sqlite.SQLiteOpenHelper
import android.util.Log
class DataManager() {
// This is the actual database
private val db: SQLiteDatabase
init {
// Create an instance of our internal
// CustomSQLiteOpenHelper class
val helper = CustomSQLiteOpenHelper(context)
// Get a writable database
db = helper.writableDatabase
}