Simplified shopping application
The requirements raised for this assignment shall test concepts of:
|REQ001||Get products||Application must be able to read an URL and parse url to get products|
|REQ002||Display list products||Display list when click in item on drawer menu|
|REQ003||Display list transactions||Display list when click in item on drawer menu|
|REQ004||Allow information caching||All information once loaded from web into app must be persisted locally and accessible offline(only to transactions)|
|REQ005||Refresh items||You can execute pull to refresh|
One of the most importants gains that the Clean architecture pattern brings to the project is the fact that all business logic gets isolated on Presenter Layer, Domain layer, Data layer, it means, all code worthy to be tested is well encapsulated on classes with low dependency on OS components. This pattern alied with a Dependency Injection Container and Mock Frameworks (such as Mockito allows the developer to take full advantage of Unit Tests.
OkHttp: “(...) HTTP is the way modern applications network. It’s how we exchange data & media. Doing HTTP efficiently makes your stuff load faster and saves bandwidth. OkHttp is an HTTP client that’s efficient by default:
OkHttp perseveres when the network is troublesome: it will silently recover from common connection problems. If your service has multiple IP addresses OkHttp will attempt alternate addresses if the first connect fails. This is necessary for IPv4+IPv6 and for services hosted in redundant data centers. OkHttp initiates new connections with modern TLS features (SNI, ALPN), and falls back to TLS 1.0 if the handshake fails. Using OkHttp is easy. Its request/response API is designed with fluent builders and immutability. It supports both synchronous blocking calls and async calls with callbacks. OkHttp supports Android 2.3 and above. For Java, the minimum requirement is 1.7…”_ RxAndroid: “(...) ReactiveX is a combination of the best ideas from the Observer pattern, the Iterator pattern, and functional programming...”
In order to make this application work, follow the steps below:
Copyright 2017 Uzias Santos Ferreira
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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