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POAccessing SQLite database from another class
 

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    <p>I've created a sample SQLite database in Android that reads entries into a ListView. I'm going to add code so that when clicked, each ListView item starts a new activity to display more information. How can I run queries on this database from within another activity? Thanks</p> <pre><code>public class Database extends ListActivity { private final String SAMPLE_DB_NAME = "myFriendsDb"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ArrayList&lt;String&gt; results = new ArrayList&lt;String&gt;(); SQLiteDatabase db = null; try { db = this.openOrCreateDatabase(SAMPLE_DB_NAME, MODE_PRIVATE, null); db.execSQL("CREATE TABLE IF NOT EXISTS people" + " (LastName VARCHAR, FirstName VARCHAR," + " Country VARCHAR, Age INT(3));"); db.execSQL("INSERT INTO people" + " Values ('Jones','Bob','UK',30);"); db.execSQL("INSERT INTO people" + " Values ('Smith','John','UK',40);"); db.execSQL("INSERT INTO people" + " Values ('Thompson','James','UK',50);"); Cursor c = db.rawQuery("SELECT FirstName, LastName FROM people", null); if (c != null ) { if (c.moveToFirst()) { do { String firstName = c.getString(c.getColumnIndex("FirstName")); String lastName = c.getString(c.getColumnIndex("LastName")); results.add("" + firstName + " " + lastName); }while (c.moveToNext()); } } this.setListAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1,results)); } catch (SQLiteException se ) { Log.e(getClass().getSimpleName(), "Could not create or Open the database"); } finally { if (db != null) db.execSQL("DELETE FROM people"); db.close(); } </code></pre> <p>}</p>
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    1. COhttp://www.vogella.com/articles/AndroidSQLite/article.html#databasetutorial is a nice tutorial on all sorts of SQLite related things. You should especially look at `SQLiteOpenHelper` that is used to open a database and the DataSource class that is used to access the data.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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