Databases
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    <p>I have a DatabaseAdapter class which contains two databases which are opened together.</p> <pre><code>public class DatabaseAdapter { /** Identifier for the internal database */ public static final int INTERNAL = 0; /** Identifier for the external database */ public static final int EXTERNAL = 1; private final SQLiteOpenHelper[] mDatabaseManager = new SQLiteOpenHelper[2]; private final SQLiteDatabase[] mDatabases = new SQLiteDatabase[2]; /** * Constructs the database and open it. */ public DatabaseAdapter() { // Open the internal_db mDatabaseManager[INTERNAL] = new InternalDatabaseManager(MyApplication.getInstance()); mDatabases[INTERNAL] = mDatabaseManager[INTERNAL].getWritableDatabase(); } /** * Checks the database state and throws an {@link IllegalStateException} if database isn't open. * Should always be used before starting to access the database. * * @param type Type of the database. Can be INTERNAL or EXTERNAL. */ public void checkDbState(int type) { if (mDatabases[type] == null || !mDatabases[type].isOpen()) { throw new IllegalStateException("The database has not been opened"); } } /** * Closes the database of the given type. * * @param type Type of the database. Can be INTERNAL or EXTERNAL. */ public void close(int type) { if (mDatabases[type].isOpen()) { mDatabases[type].close(); mDatabases[type] = null; if (mDatabaseManager[type] != null) { mDatabaseManager[type].close(); mDatabaseManager[type] = null; } } } /** * @param type Type of the database. Can be INTERNAL or EXTERNAL. * @return true if the database is open, false otherwise. */ public boolean isOpen(int type) { return mDatabases[type] != null &amp;&amp; mDatabases[type].isOpen(); } /** * Opens the default database. * * @param type Type of the database. Can be INTERNAL or EXTERNAL. */ public void open(int type) { switch (type) { case INTERNAL: mDatabaseManager[INTERNAL] = new InternalDatabaseManager(MyApplication.getInstance()); if (!isOpen(INTERNAL)) { mDatabases[INTERNAL] = mDatabaseManager[INTERNAL].getWritableDatabase(); } break; case EXTERNAL: mDatabaseManager[EXTERNAL] = new ExternalDatabaseManager(MyApplication.getInstance(), Constants.EXTERNAL_DB_PATH, 1); if (!isOpen(EXTERNAL)) { mDatabases[EXTERNAL] = mDatabaseManager[EXTERNAL].getWritableDatabase(); } break; } } } </code></pre> <p>to add a third one should be easy :)</p>
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    1. COThank you for you answer, I will try your databaseHelper too.
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