I've an Android SQLite Database and that i placed some rows. Once I erased these rows the ID column continues in the last ID and I must restart the counting from 1.

Try:

delete from sqlite_sequence where name='your_table';

Within your .db file there's an table known as sqlite_sequence

Each row has two posts 'name' the title on the table 'seq' a integer showing the present last value only at that table

You are able to update it to

But beware in case your table make use of this id because the unique identifier.

Have a look only at that answer: SQLite Reset Primary Key Field