Practical Programming on Android

What is Android
• Linux kernel and Dalvik virtual machine, application runs in process
• Develop in Java source code, compiled to Dalvik bytecode
• Java 5: annotations, generics
• You can use regular debugger in Eclipse with Android plugin
• NextAction – started in october 2008, todo lists
• Google developer phone - synchronisation Gmail and contacts, Google calendar
• Android is attractive for developers:
• Java source code, familiar development environment
• Open platform

…
UI
Layout widgets
- AbsoluteLayout – x/y coordinates, inflexible
- LinearLayout – horizontal/vertical, simple, flexible
- RelativeLayout – position relative to other components, flexible, more complex
- TableLayout – rows/columns
View components:
List
Button
Text view/edit
Spinner
Google map, and more…

Navigation
With parameters
Bundle bundle = new Bundle();
bundle.putString(”myparameter”, “Hello world”);
intent.putExtras(bundle);
You can use Parcelable interface to add other classes to bundle.
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