hearthis.at - API Usage example

This android application is a exemple of a simple music streaming player that use a music API from https://hearthis.at/api-v2/.

About the project

The project was build using the MVC design pattern, OOP, Event Oriented Programming and Functional Programming.

Where Event Oriented Programming was primarily used to control independent components asynchronously based on end user action.

NotificationEvent

object NotificationEvent {
    private val publisher : PublishSubject<Pair<String, Any?>> = PublishSubject.create()

    fun post(identifier: String, content: Any? = null) = publisher.onNext(Pair(identifier, content))

    fun <T> listen(identifier: String, contentType: Class<T>): Observable<Pair<String, Any?>> = publisher.filter {
            pair -> pair.first == identifier && (pair.second == null || pair.second!!::class.javaPrimitiveType == contentType || pair.second!!::class.javaObjectType == contentType)
    }
}

Post of a event:

NotificationEvent.post(identifier = "play", content = track.toJson())

Listening a event:

NotificationEvent.listen(identifier = "play", contentType = String::class.java).subscribe { pair ->
  val track = (pair.second as String).objectFromJson(Track::class.java)
  playing_now_frame.play(track = track, full = true)
}

Libraries

KOTLIN
org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.50
org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.1
org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1

ANDROID SUPPORT
com.android.support:appcompat-v7:28.0.0
com.android.support:support-v4:28.0.0
com.android.support:support-v13:28.0.0
com.android.support:recyclerview-v7:28.0.0
com.android.support:cardview-v7:28.0.0
com.android.support:customtabs:28.0.0
com.android.support:design:28.0.0
com.android.support:multidex:1.0.3
com.android.support.constraint:constraint-layout:1.1.3
com.android.support:support-annotations:28.0.0

ANKO
org.jetbrains.anko:anko:0.10.8
org.jetbrains.anko:anko-design:0.10.8

REACTIVEX
io.reactivex.rxjava2:rxjava:2.2.8
io.reactivex.rxjava2:rxandroid:2.1.1
io.reactivex.rxjava2:rxkotlin:2.3.0

GOOGLE
com.google.code.gson:gson:2.8.5

RETROFIT
com.squareup.retrofit2:retrofit:2.6.0
com.squareup.retrofit2:converter-gson:2.6.0
com.squareup.retrofit2:adapter-rxjava2:2.6.0
com.squareup.okhttp3:logging-interceptor:3.7.0

GLIDE
com.github.bumptech.glide:compiler:4.9.0
com.github.bumptech.glide:glide:4.9.0
com.github.bumptech.glide:recyclerview-integration:4.6.1

OTHERS
com.danikula:videocache:2.7.1
com.github.jkwiecien:EasyImage:2.0.4
id.zelory:compressor:1.0.4
com.redmadrobot:inputmask:4.1.0
com.afollestad:assent:0.2.5

MIT License

Copyright (c) 2019 Daniel Sant'Anna de Oliveira

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.