Leonardo

A chart drawing library for Android

License	The MIT License (MIT)
GroupId	tech.harmonysoft
ArtifactId	leonardo
Last Version	3
Release Date	Feb 16, 2020
Type	aar
Description	Leonardo A chart drawing library for Android
Project URL	https://github.com/denis-zhdanov/leonardo-android
Source Code Management	https://github.com/denis-zhdanov/leonardo-android

Download leonardo

Filename	Size
leonardo-3.pom
leonardo-3.aar	193 KB
leonardo-3-sources.jar	44 KB
leonardo-3-javadoc.jar	217 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/tech.harmonysoft/leonardo/ -->
<dependency>
    <groupId>tech.harmonysoft</groupId>
    <artifactId>leonardo</artifactId>
    <version>3</version>
    <type>aar</type>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/tech.harmonysoft/leonardo/
implementation 'tech.harmonysoft:leonardo:3'

Gradle Kotlin

// https://jarcasting.com/artifacts/tech.harmonysoft/leonardo/
implementation ("tech.harmonysoft:leonardo:3")

Apache Buildr

'tech.harmonysoft:leonardo:aar:3'

Apache Ivy

<dependency org="tech.harmonysoft" name="leonardo" rev="3">
  <artifact name="leonardo" type="aar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='tech.harmonysoft', module='leonardo', version='3')
)

Scala SBT

libraryDependencies += "tech.harmonysoft" % "leonardo" % "3"

Leiningen

[tech.harmonysoft/leonardo "3"]

Dependencies

compile (3)

Group / Artifact	Type	Version
org.jetbrains.kotlin : kotlin-android-extensions-runtime	jar	1.3.41
org.jetbrains.kotlin : kotlin-stdlib-jdk8	jar	1.3.41
androidx.appcompat » appcompat	jar	1.1.0

Project Modules

There are no modules declared in this project.

Tl;DR

A chart drawing kotlin Android library designed to work with dynamic data loading and unloading.

Rationale

Originally this library was created Telegram chart contest. However, when the contest was done, it looked like it was worth to made it production-ready and open-source. The rationale is simple - there is a number of great chart libraries, but they work with static data, i.e. it's developer's responsibility to pre-load target data points, feed them into a library and build a more or less static chart.

With this library we have a dedicated ChartView with highly customizable ChartConfig and powerful ChartModel. The model should be provided by ChartDataLoader by the application (data loading strategy interface). It's already guaranteed to be called from a background thread. The library also takes care of applying loaded data points in the main thread.

Example

A sample application which illustrates the library in action can be found on Play Market. It uses infinite on-the-fly data loading strategy.

Versions

Version
3 Feb 16, 2020
2 Feb 16, 2020
1 Feb 16, 2020