ActiveAndroid Pre populate table using schema migration

问题

I want to create a table for the first time (DB version = 1), and insert into it 2 rows by default. The table needs to be created automatically by ActiveAndroid, and the records should be inserted by the SQL I wrote in 1.sql file.

The table looks fine, but the rows are not inserted at all (no errors thrown).

The model looks like this:

@Table(name = "leagues")
public class League extends Model implements Serializable{

    @Column(name = "name")
    public String name;

    public static List<League> getAll() {
        return new Select()
                .from(League.class)
                .orderBy("name ASC")
                .execute();
    }
}

and the 1.sql:

INSERT INTO leagues (Id, name) VALUES (1, 'Premier league');

回答1:

Apparently that ActiveAndroid thinks the version of the DB is 0 in the initial setup of the app. So, the file "1.sql" has a bigger version than the DB number and it will be skipped!

To make it work, the script name should be "0.sql".

回答2:

If you have initialised ActiveAndroid both with Configuration namely code below and Android Manifest "AA_DB_VERSION"; this is the reason. Remove Configuration.Builder. If you initialise with configuration, ActiveAndroid doesn't get version number from AA_DB_VERSION.

CoConfiguration.Builder(this).setDatabaseName("XXXX.db").create();

来源：https://stackoverflow.com/questions/27153002/activeandroid-pre-populate-table-using-schema-migration