Entering data manually into a table (Android)

Question

My project has a Textview that should already start displaying a value to the user, this will only have to change it. But, this value is not being displayed. I believe it is not being saved. How do I insert this initial value into the table?

This is the code I’m using and it doesn’t work:

public void onCreate(SQLiteDatabase bd) {
    bd.execSQL("create table dados(_id integer primary key autoincrement, data text not null);");
    String sql = "INSERT INTO dados (data) values('DD/MM/AAAA')";
    bd.execSQL(sql);
}