By Chris Haseman

ISBN-10: 143021063X

ISBN-13: 9781430210634

ISBN-10: 1430210648

ISBN-13: 9781430210641

Android necessities is a no–frills, no–nonsense, code–centric run throughout the guts of software improvement on Google’s cellular OS. This ebook makes use of the advance of a pattern program to paintings via issues, concentrating on giving builders the basic instruments and examples required to make manageable advertisement purposes paintings. overlaying the whole lot of the Android catalog in lower than one hundred fifty pages is just most unlikely. as an alternative, this e-book specializes in simply 4 major subject matters: the appliance existence cycle and OS integration, person interface, location–based companies, and networking. Thorough, entire, and valuable paintings at the nuts and bolts of software improvement in Android instance pushed and essentially minded a device for hobbyists and pros who are looking to create production–quality purposes What you’ll research know how an Android program capabilities and communicates with the handset that hosts it. understand the complexities of timers, companies, and multimedia playback. Create and reveal a wealthy mixture of custom–rendered monitors and adapted Android widgets. know the way location–based providers have gotten progressively more very important within the cellular global. See tips to use Google’s robust Map device. discover the intricacies of community connectivity within the cellular international. Who this e-book is for This ebook is for pro software program engineers trying to stream their rules and functions into the cellular area with Android. the writer assumes the reader has a satisfactory knowing of Java. they need to be capable to write sessions and deal with uncomplicated inheritance constructions. This ebook additionally pursuits hobbyist builders seeking to negotiate the complicated minefield of cellular software program. desk of Contents creation the applying consumer Interface place, place, place Taking Android Out for a stroll Tying on a Bow

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URL + " ASC"); I’ll now break down what’s happening. You’ll first get the column index of the bookmark URL. Again, because Android provides access to most of its internal data in a SQL format, you should get used to referring to your saved information in a database-centric way. Next you’ll set up the cursor, an object similar to a Java ME RecordStore enumerator and set up your projection string array. Because you’re interested only in the columns containing the URL, you can keep it very simple.

To do this, you’ll make sure that each XML widget you want to access has an android:id parameter. java file has the ID you need. The following is an example of how to get a pointer to the View object when your application starts up. loginbutton); } Here you’ve acquired a pointer to the login button by calling findViewById. This allows you to add a click listener so that you’ll be notified when the button is selected (on a touch screen with a stylus) or selected by the center softkey. You’ll extend the ClickListener class inline as follows: public class loginScreen extends Activity { private OnClickListener buttonListener = new OnClickListener() 56 Android Essentials { public void onClick(View v) { grabEnteredText(); } }; ...

You’ll need to do this any time you want to send out an intent action that will start a new activity. Additionally, just as you did in the splash screen example application, you’ll have to add a new action to the intent filter of your activity. DEFAULT" /> Now, if you’ve correctly added the earlier code in place, when you send a SMS message from the DDMS perspective, you should see your application come to the foreground and the “Hello World, PrankActivity” text display proudly on the screen.

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Android Essentials (Firstpress) by Chris Haseman

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