Build compelling Java-based mobile applications using the Android SDK and the Eclipse open-source software development platform. Android: A Programmer's Guide shows you, step-by-step, how to download and set up all of the necessary tools, build and tune dynamic Android programs, and debug your results. Discover how to provide web and chat functions, interact with the phone dialer and GPS devices, and access the latest Google services. You'll also learn how to create custom Content Providers and database-enable your applications using SQLite.
* Install and configure Java, Eclipse, and Android plugin
* Create Android projects from the Eclipse UI or command line
* Integrate web content, images, galleries, and sounds
* Deploy menus, progress bars, and auto-complete functions
* Trigger actions using Android Intents, Filters, and Receivers
* Implement GPS, Google Maps, Google Earth, and GTalk
* Build interactive SQLite databases, calendars, and notepads
* Test applications using the Android Emulator and Debug Bridge
There has been a change in the data connection state DATE_CHANGED_ACTION The phone’s system date has changed FOTA_CANCEL_ACTION Cancel pending system update downloads FOTA_INSTALL_ACTION An update has been downloaded and must be installed immediately (sent by the system) FOTA_READY_ACTION An update has been downloaded and can be installed—but does not need to be installed immediately (sent by the system) FOTA_RESTART_ACTION Restart a system update download
the way the project is currently written, it allows you to input any type of value into the EditText View and try to send it to the Call Activity. This is really not an optimal approach to application development. Do some research and add some validation to the EditText. Use the following parameters to modify your project: Use a regular expression to validate that a phone number was entered in the EditText (package java.regex). Use the showAlert( ) syntax to display a message telling the user
Intent(this, testSpinner.class); startActivity(spinner); } } Launch your application and select the Spinner option from the Menu (shown earlier in Figure 8-1). The following illustration shows what the Spinner Activity looks like. Try clicking the Set isEnabled and Change Background Color Buttons. The results are depicted in the following illustrations. Try This Modify More View Attributes Modify the Button actions for the Activities to change different attributes on each View: Use
url.getPathSegments().get(1); rowId = Long.parseLong(segment); count = mDB .delete("friends", "_id=" + segment + (!TextUtils.isEmpty(where) ? " AND (" + where + ')' : ""), whereArgs); break; default: throw new IllegalArgumentException("Unknown URL " + url); } getContext().getContentResolver().notifyChange(url, null); return count; } @Override public int update(Uri url, ContentValues values, String where, String[] whereArgs) { int count; switch (URL_MATCHER.match(url)) { case FRIENDS: count =
option launches the custom View you created. Enter a friend’s name on the line provided, as shown here, and return to the main Activity by clicking the back arrow on the Emulator. You should now have a friend’s name in the ListView. Click the Menu button again; you clearly have more options now, as shown in this illustration. Select the Edit Location option. This should bring up your custom control yet again. Enter a coordinate-based location, as shown here. Finally, return to the main
