Android Development 2: Notepad Application
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Android Development 2: Notepad Application
- 1. Android Basic Course © 2012 University of Science – HCM City. M.Sc. Bui Tan Loc btloc@fit.hcmus.edu.vn Department of Software Engineering, Faculty of Information Technology, University of Science – Ho Chi Minh City, Viet Nam Lab 2: Notepad application
- 2. Android Basic Course © 2012 University of Science – HCM City. Pre-requirements • Module 4: User Interfaces - Activity
- 3. Android Basic Course © 2012 University of Science – HCM City. Notepad Exercise 1 • Do the tutorial for exercise 1: • http://developer.android.com/resources/tutorials/notepad/notepa d-ex1.html • After completing this tutorial, you will have practiced about: • Creating xml-based layout files such as notepad_list.xml, notes_row.xml. • Modifying string.xml resource. • Creating options menu by using code. • Handling options menu selections. • Creating and loading resources for a ListView. • Filling data into a ListView.
- 4. Android Basic Course © 2012 University of Science – HCM City. Notepad Exercise 2 • Do the tutorial for exercise 2: • http://developer.android.com/resources/tutorials/notepad/notepa d-ex2.html • After completing this tutorial, you will have practiced about: • Creating context menu by using code. • Handling context menu selections. • Using Intent object to start an activity for a result. • Starting an activity for passing values by putting values into Intent object. • Using layout_weight attribute. • Loading views from xml-based layout file by using findViewById() method. • Using Intent object to read passed values. • Using event listeners. • Declaring a new activity in AndroidManifest.xml file.
- 5. Android Basic Course © 2012 University of Science – HCM City. Notepad Exercise 3 • Do the tutorial for exercise 3: • http://developer.android.com/resources/tutorials/notepad/notepa d-ex3.html • After completing this tutorial, you will have practiced about: • Managing the Activity lifecycle with onCreate(), onPause(), onResume(), and onSaveInstancesState() method.
- 6. Android Basic Course © 2012 University of Science – HCM City. Notepad Extra Credit • Do the tutorial: • http://developer.android.com/resources/tutorials/notepad/notepa d-extra-credit.html • After completing this tutorial, you will have: • Practiced about using DMMS tools to emulate voice calls or SMS messages. • Learned about the time which onCreate(), onPause(), onResume(), or onSaveInstancesState() method is called.
- 7. Android Basic Course © 2012 University of Science – HCM City. More requirements • Try creating menus by loading from xml resources (not using code to create menu items). • Try adding icons (images) for menu items. • Try using event listener technique for menu item selections (not using onOptionsItemSelected or onContextItemSelected function)
- 8. Android Basic Course © 2012 University of Science – HCM City. Questions or Discussions • Why do we not use onRestoreInstancesState() to manage the Activity lifecycle in this Notepad application? • What is the difference between using event handlers (onOptionsItemSelected, onContextItemSelected) and using event listeners (setOnMenuItemClickListener)?