Session 4 report (Retrofit)

Android Development/2020-21/Session 4.md

@@ -0,0 +1,95 @@
+# Session 4
+*Topic:* Retrofit
+
+*Conducted on:* 16-06-2021 19:00
+
+## Agenda
+A Session on understanding and implementation of Retrofit
+
+## Summary
+
+//Repo For reference -- https://github.com/mrinalpathak16/RecyclerViewDemo
+
+//A practical class on implementing Retrofit to intigrate an API in the project present in refrence repo.
+
+### Important concepts discussed :
+
+#### changes made in grade(dependencies for Retrofit)
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+
+#### changes made in manifest file
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+#### Source of JSON data
+    https://jsonplaceholder.typicode.com/
+
+#### Who handles which part of project:
+    Frontend -> Web/App Developer
+    Backend -> Web Developer
+    Database -> Web Developer
+
+#### Data Interaction:
+    Frontend -> Requests to Backend <-> Database -> Response to Frontend 
+#### All about API
+    API = Application Programming Interface
+    Here we are refering only web APIs.
+
+    API Development -> Backend Web Developer
+    Frontend Developers(We) -> Consumes API
+
+    Parts of API -> URL, Request Format, Response Format.
+
+    An API URL have 2 parts :
+    Base URL (https://jsonplaceholder.typicode.com ) + Route (/post , /comments , etc.)
+
+
+#### JSON
+    JSON = JavaScript Object Notation
+
+    {
+        "title" : "Sea Food",
+        "blog-content": "I had a nice time experiencing sea food at XYZ restaurent!"
+        "likes": 5,
+        "date-created": "2021-06-16",
+        "tags": ["cuisine","travelling","blog"]
+    } 
+
+
+#### Request Types ->
+
+    GET = Fetch certain data based on some parameters.
+    POST = Send some data for including into database.
+    (Above are the mainly used request types.)
+    PATCH, PUT, DELETE
+
+#### Steps to integrate API in a project->
+
+    * Get the URL, request format, response format
+    * Test it on Postman
+    * Create Response Model Class(and Request Model Class in case of POST requests)
+    * Define an Interface-> function (request type (GET, POST), request model, response model).
+    * Instantiate a Retrofit and the interface.
+    * Call the API.
+#### What exactly Retrofit does?
+    Retrofit -> Requests response -> use GSON Converter Factory to convert response into Java Object .
+
+
+### Resources provided :
+
+Articles:
+
+* Retrofit -- https://futurestud.io/tutorials/retrofit-getting-started-and-android-client
+
+
+# Credits
+
+*Conducted by*: Akash Mahapatra and Bhavesh Sharma
+
+*Report compiled by*: Abdullah
+
+*Attendees*: Abdullah, Anisha Dutta, Ansh Tandon, Bhavya Agarwal, Ganta Nikhil, Garvit Dua, Saurav Kumar, Tarun Shrivastava
+
+
+
+