Beginning Android Application Development (Wrox Programmer by Wei-Meng Lee

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By Wei-Meng Lee

Create must-have functions for the newest Android OS
The Android OS is a well-liked and versatile platform for lots of of today's so much in-demand cellular units. This full-color consultant will give you a hands-on advent to making Android functions for the most recent cellular units. Veteran writer Wei Meng Lee accompanies each one lesson with real-world examples to force domestic the content material he covers. starting with an summary of middle Android positive factors and instruments, he strikes at a gradual speed whereas educating every little thing you must be aware of to effectively boost your individual Android applications.* Explains what an task is and studies its lifecycle* Zeroes in on customizing actions by means of using kinds and issues* seems to be on the elements of a reveal, together with LinearLayout, AbsoluteLayout, and RelativeLayout, between others* info how one can adapt to diverse monitor sizes and modify exhibit orientation* stories the diversity of perspectives similar to TextView, ProgressBar, TimePicker, and more
Beginning Android software Development pares down the main crucial steps you must be aware of so that you can begin developing Android functions at the present time.

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Additional resources for Beginning Android Application Development (Wrox Programmer to Programmer)

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When the first activity is loaded, click the center of the directional pad (see Figure 2-13; on a real device this can be achieved by pressing down the trackball). The second activity will now be loaded. java). Hence, if you want to add another activity to a project, you need to create these two components. DEFAULT” /> Here, you have added a new activity to the application. Note the following: ➤ The name of the new activity added is “Activity2”. ➤ The label for the activity is named “Activity 2”.

When you debug the application on the Android Emulator, the application is automatically installed on the emulator. And that’s it — you have developed your first Android application! The next section unravels how all the various files in your Android project work together to make your application come alive. Anatomy of an Android Application Now that you have created your first Hello World Android application, it is time to dissect the innards of the Android project and examine all the parts that make everything work.

44 ❘ Chapter 2 Activities and Intents 4. xml file by right-clicking on it and selecting Copy. Then, right-click on the res/layout folder and select Paste. xml. xml file (see Figure 2-12). Figure 2-10 Figure 2-11 5. ” /> 6. activity2); } } 7. Intent; public class MainActivity extends Activity { String tag = “Events”; /** Called when the activity is first created. ACTIVITY2”)); ❘ 45 46 ❘ Chapter 2 Activities and Intents } return false; } public public public public public public } 8.

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