我正在创建一个实体(Room Persistence Library)类Food,我想在其中设置foodId
作为自动增量.
@Entity
class Food(var foodName: String, var foodDesc: String, var protein: Double, var carbs: Double, var fat: Double)
{
@PrimaryKey
var foodId: Int = 0
var calories: Double = 0.toDouble()
}
如何将foodId
设置为自动增量字段?