Saving Data on Android

model
 package by right-clicking on 
model
 and 
selecting 
New 
▸
 Kotlin File/Class
, and name it 
Question
.
Fill or replace the file content with the following code:
@Entity(tableName = "questions")
 
// 1
 
data
 
class
 
Question
( 
    
@PrimaryKey(autoGenerate = true)
 
// 2
 
    
@ColumnInfo(name = "question_id")
 
// 3
 
    
var
 questionId: 
Int
, 
    
val
 text: String 
)
Note
: Remember to use 
Alt
 + 
Enter
 on PC or 
Option
 + 
Return/Enter
 on a 
Mac to import any missing dependencies.
The code does the following, step by step:
1. The 
@Entity
 annotation tells Room that this data class should be converted into 
an entity. The 
tableName
 property indicates that the table name should be 
questions
.
2.
@PrimaryKey
 makes the 
questionId
 field of your 
Question
 class a primary key 
of the table. The 
autogenerate
 property declares that Room will generate the 
primary key for you as an auto-incremented integer.
3.
@ColumnInfo
 allows you to customize your column's properties like the name or 
the type affinity - 
Integer
, 
Text
, 
Float
, etc.
Now, create another class under the