Playing with parse.com
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The document discusses Parse, a backend as a service platform bought by Facebook. It is used to build the app Qoffee, which helps users find coffee and track consumption. The document outlines how to get started with Parse on Android, including setting up login screens, connecting to cloud data, using cloud code to build APIs, and scheduling tasks.
Playing with parse.com
- 1. Playing with parse.com Building an app called Qoffee Andrea De Gaetano My Blog: http://pestohacks.blogspot.com Twitter: @dega1999 the app: www.qoffee.it Interests: #mobile #security #linux #robots #drones #parkour #ara
- 2. What is Parse? Backend as a service Bought in 2013 by Facebook SDK for all the major client platforms: android, ios, windows, unity3d, php, iot… blablabla! Useful to build multi-platform apps Simplify APP development “””Free”””(*) Made with Go (previously ruby), C++, Javascript
- 3. What is Qoffee? My side project An app that helps people to find the best coffee in town keep track of Coffee consumption With Achievements Test Parse.com is one of the reason behind this app The app is available on Play Store and Amazon App Store https://play.google.com/store/apps/details? id=com.andrea.degaetano.coffelover
- 4. What we will see: Platform Tools Overview Getting started on Android Build a Multiple-Login screen Fetch Cloud Data from your Android App Build API with Cloud Code Schedule Tasks
- 6. Android: Getting Started Create an account Create an App on parse.com Get App keys (in settings) Download the template APP Import the project in Android Studio You need to create Facebook and Twitter App to use “social” login Template: https://github.com/ParsePlatform/ParseUI-Android
- 7. Social-Login Screen Specify the following in res/values/strings.xml of each sample project: parse_app_id and parse_client_key facebook_app_id twitter_consumer_key and twitter_consumer_secret Your users will be recorded in a “User” table on Cloud Data New User creation is already implemented Email password recovery is already implemented (customizable)
- 9. Connect with Parse Cloud ParseObject is the class representing a single row in a table in the cloud: You can pass any supported cloud data type: number, binary files, coordinates, string… You can view the created data on your parse page
- 10. Connect with Parse Cloud ParseQuery is the class to retrieve data from the cloud: You can add constraint with where clause to ParseQuery like: • whereGreaterThan(String key, Object value) • whereExists(String key) • whereStartsWith(String key, String prefix) • whereWithinKilometers(String k, ParseGeoPoint p, double maxDistance) • whereEqualTo(String key, Object value)
- 11. ListView —> ParseQueryAdapter To display a list of objects you can: build your own adapter and use ParseQuery use the ParseQueryAdapter ParseQueryAdapter paginate results by default You can customize the layout
- 12. Cloud Code All the advantages of the service side code: expose API simplify multiplatform support change app behavior anytime validate pre and post data creation: BeforeSave(object): 3 secs timeout AfterSave (object): 3 secs timeout The language is Javascript: based on backbone.js Function should finish in 15 seconds.
- 13. Cloud Code: function example
- 14. Cloud Code: beforesave example
- 15. Cloud Code ParseQuery typical function used: first: retrieve the first object of a query each: call a callback for each found record find: list of objects that satisfies the query … Query are limited to a max of 1000 results (default is 100) More requests you do —> More money you need!
- 16. Cloud Code You use a terminal tool to upload new code: parse deploy You can chain multiple operations with Promise Hard to debug -> upload code, run and watch the results on the log At least there’s a static analyzer checker You can add external javascript library to your project: underscore.js sax.js xmlreader.js never work out of the box! :D
- 17. Cloud Code: tool
- 18. Schedule Task The code is similar to cloud code, except for the functions declaration Necessary for long running task The job functions require to return status.success o status.error You need to register the task with the platform Debug —> Log
- 20. Schedule Task: rss parsing example
- 21. Thanks you! Andrea De Gaetano My Blog: http://pestohacks.blogspot.com Twitter: @dega1999 the app: www.qoffee.it Interests: #mobile #security #linux #robots #drones #parkour #ara