CSC 349: Week of 02/03/14

CSC 349: The Week beginning Feb. 3

Homework:

Do the exercise on Returning Results from an Intent on pp. 59-63 of Beginning Android 4 Application Development (Wei-Ming Lee). It uses the startActivityForResult method. Submit screen captures of activities running/emulating and java code

Do the exercise on Passing Data Using an Intent on pp. 63-69 of Beginning Android 4 Application Development (Wei-Ming Lee). It uses the Bundle object as well as the putExtra, setData methods. Submit screen captures of activities running/emulating and java code

Due: Feb. 11
Tuesday:

SlideShow: Android app that reads a text file located in res/raw all at once (as opposed to line by line)

Android Application: Read a JSON file from res/raw and parse the JSON using JSONObject, .getJSONObject, JSONArray, .getJSONArray, and .getString

Android Application: Simple Slide Show (use getResources().getIdentifier() to change images based on file name rather than by resource id -- also points some layout features with comments in the xml)

Lab: NFL from JSON Use the files in NFL files to design an app that has a Spinner, an ImageView, and a TextView. In the onCreate method read the JSON file. Use the City and TeamName properties to populate the Spinner. Place the logo for the first team (Philadelphia Eagles) in the ImageView and the remaining data (Conference, Division, and Coach) in the TextView. When the user changes the team using the Spinner, replace the image and and data to correspond to the selected team.

I revised the NFL.zip file above so that the image file names are not just numbers which Android did not like. I also updated the json file to change the file name and eliminate the file extension (again which Android does not like).

Due: Feb. 11
Thursday:

Android App: Demos a SeekBar (slider) also shows code to ]determine the size of the screen and code to change the size of a TextView dynamically

Lab: Color Selector using SeekBar widgets. Design a layout like that above with a TextView that starts with a midtone gray and then uses three SeekBars (with Max's of 255) to change the amount of red, green and blue in the color of the TextView. I used code like:
```
            tvColor.setBackgroundColor(Color.rgb(myRed, myGreen, myBlue));
        
```
Also have three TextViews next to the SeekBars that display the hex code for the value (progress) of the SeekBar. I used code like:
```
            tvBlue.setText(Integer.toHexString(progress));
        
```
Due: Feb. 13