A (175)

Contents xi

Coding Galaxy Objects: Constructor Method  158

Creating Galaxy Functions: Coding Your Methods  158

Creating a Java Class in Eclipse: Galaxyjava  160

Coding Your Galaxyjava Class with Eclipse ADT  163

Summary  164

■ Chapter 6: Android Screen Design: Writing to the Display Using Activity and View ����� 167

How Activity, View, and ViewGroup Relate  168

The ViewGroup Class: A Subclass of View  170

Customizing Your UI Design: Galaxy Screen  172

Eclipse Clean Project: Sanitizing Your Project  173

Using the Galaxy Class: Creating a Galaxy Object  175

Using LinearLayout: Creating Linear UI Designs  180

Using Digital Imagery: Adding a Galaxy Background  186

Creating UI Contrast: The TextView Color Parameter  189

Nested LinearLayout Containers: Creating a More Complex UI  190

Interfacing with UI Elements: The ID Parameter  196

Creating Modular Code: createDefaultGalaxy( )  197

Updating the UI in Java: Using UI Objects  198

A UI Instantiation Method: createUiTextViews( )  200

Creating the transferDataValues( ) Method  202

Testing and Debugging your Application  206

Using the LogCat  207

Summary  211

■ Chapter 7: Making Apps Interactive: Intents, Event Handling, and Menus �������������������� 213

The Menu Class and Interface: Android Menus  214

Designing Menus in XML Using <menu> and <item>  215

AVD Is Not Starting App: Using the Eclipse AVD Manager  217

Inflating the Menu: onCreateOptionsMenu( )  219

The MenuItem Class: onOptionsItemSelected( ) 220

The Java Switch Statement: Choosing a MenuItem  222

Using Intent Objects: The Android Intent Class  224