Databases
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    <p>I've used this approach:</p> <p>Create a class responsible for managing the db, let's call it <code>DBUtil</code>. This class will extend <code>android.database.sqlite.SQLiteOpenHelper</code>. You can pass a reference to the application context to the constructor of this class. This class will contain methods for creating the db, adding, removing and retrieving items.</p> <p>Create another class, let's call it <code>AppCore</code>, create a static instance of the <code>DBUtil</code> and a static <code>init()</code> method that accepts an <code>ApplicationContext</code> object</p> <pre><code>public class AppCore { public static var dbUtil:DBUtil; public static void init( ApplicationContext context ) { dbUtil = new DBUtil( context ); } } </code></pre> <p>Then in the onCreate() method of our your application's main <code>Activity</code>, initialize the <code>AppCore</code> class.</p> <pre><code>@Override protected void onCreate(Bundle savedInstanceState) { AppCore.init( getApplicationContext() ); } </code></pre> <p>So, it's not really a Singleton. Instead, the DBUtil instance is maintained as a static property, yet still accessible throughout your application, such as this:</p> <pre><code>AppCore.dbUtil.createNewRecord( params ); </code></pre> <p>Also, I found this tutorial to be very helpful when getting started with this topic: <a href="http://developer.android.com/guide/tutorials/notepad/index.html" rel="nofollow noreferrer">http://developer.android.com/guide/tutorials/notepad/index.html</a></p>
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    1. POHow to make an Android singleton and custom data class with database?
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    1. USJeremyFromEarth
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    1. COThanks for the tip & example code, but may I ask whether this approach has benefits/disadvantages over the one I'm considering? It seems to eliminate the singleton, but as I mentioned previously, I'd like to stick with that if possible (unless I'm missing something very important that would change my mind).
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      1. USjust_another_coder
    2. COThis is just my preferred approach. I've used it in multiple projects and it has worked out well. I would recommend extending SQLiteOpenHelper though as it has some convenient hooks. http://developer.android.com/reference/android/database/sqlite/SQLiteOpenHelper.html
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    3. COoooh wow! thank you Jeremy!
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      1. USJorgesys
 

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