How to make primary key as autoincrement for Room Persistence lib
You need to use the autoGenerate property
Your primary key annotation should be like this:
@PrimaryKey(autoGenerate = true)
Reference for PrimaryKey.
You can add @PrimaryKey(autoGenerate = true) like this:
@Entity
data class Food(
var foodName: String,
var foodDesc: String,
var protein: Double,
var carbs: Double,
var fat: Double
){
@PrimaryKey(autoGenerate = true)
var foodId: Int = 0 // or foodId: Int? = null
var calories: Double = 0.toDouble()
}