Android app RESTful API in JSON format - Time Clock In/Out

Build an Android app to allow a user to clock time In and time out like punch cards. The app will interact with a Web database built with Knack.com. See [login to view URL] for details.

The app will communicate with the database using View-based requests with User Token authentification. I will supply the Application ID, Scene keys and view keys for requests such as:

Retrieving One Record: Object-Based GET

curl -X GET "[login to view URL]" \

-H "X-Knack-Application-Id: YOUR-APP-ID" \


View-Based POST

curl -X POST "[login to view URL]" \

-H "X-Knack-Application-Id: YOUR-APP-ID" \

-H "X-Knack-REST-API-Key: knack" \

-H "Content-Type: application/json" \

--data '{

"field_1": "Name of new company",


Remote Login

curl -H "Content-Type: application/json" \

--data '{"email":"email address","password":"password"}' \

"[login to view URL]"

Android app must be able to work offline and store the following:

1- User login credentials or User token

2- Date/time In

3- Date/time Out

4- GPS location In

5- GPS location Out

App functions:

1- User is prompt for email and password on first use

2- Verify and confirm user login credentials through an API call (device must be online)

3-App will display the User Name Company Name ( at all time on top of screen)

4- Clock IN button: Large circle in middle of screen, when pressed, time and location are recorded. API call to CREATE record in database when device in online. Show Clock In time on the screen with a timer (HH:MM:SS). Date/time format is dd/mm/yyyy, HH MM (military).

5- Clock OUT button: Large circle in middle of screen, when pressed, time and location are recorded. API call to UPDATE record in database when device in online. IN and OUT fields are within the same record. Therefore, record ID but be stored when clock IN is triggered.

6- Clock IN and OUT buttons are toggled. After clock IN, then, clock OUT botton appears on the screen. After clock OUT, clock IN button is back on the screen. In and OUT are not showing at the same time. Clock IN is Green, OUT is Red. Real time is shown in the middle of the Clock In and OUT [login to view URL] timer shown in the Clock OUT button.

7- Rectangular button at the bottom of screen to open a full screen web URL. I will specify the URL. Must work with User Token, HTML5 and Javascript. This is to access the full Web App Interface.

8- Need to see confirmation on screen that API call for both IN and OUT are updated in Web database. Subsequent round of IN and OUT cannot be done if previous round is not updated online. Show icon for Online and Offline.

Our API can accept only 10 API calls per second. You must include code to catch 429 errors:

response = [login to view URL](url, headers)

if ([login to view URL] == 429)


now = currentTimeStampInMilliSeconds

retryAfter = (response.x-ratelimit-reset * 1000) - now

log("Rate limited, waiting " + retryAfter + " ms before trying again.")


retry(url, headers, data)


The Android user interface will be in French. The following words are to be used on the user interface with their french translation:

User: Utilisateur

Email: Email

Password: Mot de Passe

Entreprise: Entreprise



Log in: Se Connecter

I will supply the App ID, a valid email & password, Scenes, Views and Field numbers after award.



Evner: Android, Mobile App Development, Java, RESTful API, JSON

Se mere: api json xml iphone app, asp net time clock app, time calculator android app, cloud based time clock canada, time anywhere, d4c time clock, vericlock, cloud based time and attendance systems, phone clock in system, time timer android app, android app php api, smartphone time clock app, best time clock app, punch punch time clock app android, json api android app wordpress, android app restful, json api wordpress native android app, clock in/out, free time clock app for android, android app rating api

Om arbejdsgiveren:
( 5 bedømmelser ) Cornwall, Canada

Projekt ID: #22487369

Tildelt til:


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