Android SQLite数据库存储，怎样创建一个的数据库？

SQLiteOpenHelper类的构造方法中传入db名称自然就会创建数据库了，然后在SQLiteOpenHelper.onCreate()方法里创建表。

// A string that defines the SQL statement for creating a table
private static final String SQL_CREATE_MAIN = "CREATE TABLE " +

"main " +                       // Table's name
"(" +                           // The columns in the table
" _ID INTEGER PRIMARY KEY, " +
" WORD TEXT"
" FREQUENCY INTEGER " +
" LOCALE TEXT )";

...
/**

• Helper class that actually creates and manages the provider's underlying data repository.
  */

protected static final class MainDatabaseHelper extends SQLiteOpenHelper {

/*
 * Instantiates an open helper for the provider's SQLite data repository
 * Do not do database creation and upgrade here.
 */
MainDatabaseHelper(Context context) {
    super(context, DBNAME, null, 1);
}

/*
 * Creates the data repository. This is called when the provider attempts to open the
 * repository and SQLite reports that it doesn't exist.
 */
public void onCreate(SQLiteDatabase db) {

    // Creates the main table
    db.execSQL(SQL_CREATE_MAIN);
}

}