asad-noor / bongo-android-code-test Goto Github PK

1. Solution of this problem is added in Problem1.kt file using Kotlin language.

2. Some test cases for this problem is also added in Problem1UnitTest.kt

interface Vehicle {
    int set_num_of_wheels()
    int set_num_of_passengers()
    boolean has_gas()
}

The design pattern that is used in above is Abstract Factory Design Pattern. This pattern is of the most used design patterns in Java. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object.

![Image of UML] (https://i.imgur.com/m689TE4.jpg)

The whole implementation is added into AbstractFactoryDesignPattern folder and Unit Testing code is also attached into the test package for the functions I have implemented.

I have used Builder Design Pattern for this solution which is included into BuilderDesignPattern folder and Unit Testing code is also attached.

A simple video player application is implemented using Android's VideoView and MediaController which is added into Problem #3 folder.

I will use Oberserver Design Pattern and MVVM Architectural pattern to develop these three functionalities.

As this is a videoplayer app so any type of inturptation like device rotation, incoming phone calls, battery low etc. could be smoothly handled by observing from the view which can save this app from memory leakage and lifcycle issues.