Step 1 : Choose a swatch orientation
Step 2 : Line the test strip up with
reference dots
Step 3 : Take a picture
Step 4 : Receive an
instant diagnosis

Image taken from the camera

Activity starter

Using the activity starter: Web search
Action: android.intent.action.
WEB_SEARCH

Using the activity starter: Map
Action: android.intent.action.
VIEW

Using the activity starter: YouTube
Action: android.intent.action.
VIEW

Using the activity starter: WEB_SEARCH
Action: android.intent.action.
WEB_SEARCH

Using the activity starter: SEARCH
Action: android.intent.action.
SEARCH

Apps with multiple screens

Accessing a Web service with HTTP GET
•
URL: http://finance.yahoo.com/d/quotes.csv?
f=l1&s=MSFT
•
Result:
42.36

Accessing a Web service with HTTP GET
•
URL: http://finance.yahoo.com/d/quotes.csv
?
f=l1&s=MSFT
Base URL
•
Result:
42.36

Accessing a Web service with HTTP GET
•
URL: http://finance.yahoo.com/d/quotes.csv
?
f=l1&s=MSFT
? marks start of arguments
•
Result:
42.36

Accessing a Web service with HTTP GET
•
URL: http://finance.yahoo.com/d/quotes.csv?
f=l1 &s=MSFT
First arg
•
Result:
42.36

Accessing a Web service with HTTP GET
•
URL: http://finance.yahoo.com/d/quotes.csv?
f=l1 & s=MSFT
& character separates args
•
Result:
42.36

•
Yahoo finance API (old version)
•
URL: http://finance.yahoo.com/d/quotes.csv?
f=l1& s=MSFT
Second arg
•
Result:
42.36

Execution proceeds immediately.
There is no waiting here.

New style Yahoo finance API http://query.yahooapis.com/v1/public/yql?
q=select%20*%20from%20yahoo.finance.
quotes%20where%20symbol%20in%20%28%
22MSFT%22%29&env=store://datatables.
org/alltableswithkeys
Result returned in XML

New style Yahoo finance API http://query.yahooapis.com/v1/public/yql?
q=select%20*%20from%20yahoo.finance.
quotes%20where%20symbol%20in%20%28%
22MSFT%22%29&env=store://datatables.
org/alltableswithkeys% format=json
Result returned in JSON

Takes JSON object –
{"symbol":"MSFT","Ask":"42.59“, "AverageDailyVolume":"
35207200",
"Bid":"42.58“, ... }
Returns a list of key, value pairs:
Takes list of key, value pairs and a key
((symbol MSFT) (Ask 42.59) ... )
Ask
Returns the corresponding value
42.59

https://api.nutritionix.com/v1_1/search/?
the_food
?results=0:5
&fields=item_name,brand_name,brand_id,item_id,nf_calories
&appkey= the_API _key
&appId= the_App_Id