Android: MapMe

This application is based on BrowseMap by Davanum Srinivas, a simple Google Maps viewer for Android which lets you:

• Browse Google maps on Android
• Zoom in and out
• Move around with the mouse (could be touchscreen on a real device)
• Toggle traffic and satellite view
• Find location

(The basic functionality is the same as the Maps application that already ships with Android)

However MapMe adds several features on top of this basic functionality thanks to db4o object persistence engine such as:

• Bookmark location to db4o (full map persistence including zoom levels and satellite & traffic view)
• Browse list of bookmarks
• Edit bookmark
• Navigate to location on map from bookmark
• Center map on current GPS reported location

Screenshots

To see the application in action you can watch the MapMe video on YouTube, a high resolution video (30 Mb) on an external server or the following screenshots:

db4o headquarters (satellite + traffic view)

MapMe main menu:

Creation of bookmark/navpoint:

List of saved bookmarks/navpoints:

More info!

Android Password Manager

This is an adaptation of PasswordSafe by Steven Osborn (released under the Apache License) which is basic password manager for the Android platform. The source code have been adapted to use db4o instead of SQLite which makes the handling of persistence much more intuitive while still being fast.

Details

The application basically stores login information for websites such as url, username and password in a secure way using 128 Bit AES Encryption. The user must provide the correct password in order to access the application and this password is then used to encrypt/decrypt the data.

This is a sample video of the db4o powered application running on the Android Emulator:

http://www.youtube.com/watch?v=UFSD44AcBwM

If you check the source code (see the end of this page) you'll see that the the DBHelper class (SQLite persistence) has been replaced by the Db4oHelper class (db4o persistence). Let me now show you some of the differences between handling persistence with db4o and SQLite.

Link for more info and download:

http://developer.db4o.com/ProjectSpaces/view.aspx/Android_Password_Manager

db4o - the database for Android

db4o: Persistence for Android

• Native Java queries
• 600K footprint
• Easiest database you have ever used
• Object persistence out-of-the-box

db4o - the database for Android
Google has created a stir with the release of the Android SDK, a comprehensive software platform for mobile phones that was recently announced at the Open Handset Alliance. The Java programming API and the fact that it is free makes it an ideal platform for millions of application developers - and immediately compatible to db4o.

Only hours after the Android release the db4objects team had some quick evaluations of the SDK running with db4o. The result: db4o runs without a snag on Android and is much easier to use than SQLite.

Important Links:

• Android Incubator ProjectSpace
• Android Discussion Forum
• Why Android will start the mobile Tornado
• Android brings handsets to the next level - and open doors a mile wide for db4o
• db4A - database for Android
• Android Password Manager demo application

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db4o for Android
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