Top Android Chart Libraries

A look at some of the best libraries for creating charts in android.

(a). Spark

Spark is an Android library that enables the creation of sparkline charts. It simplifies the process of graphing data by taking a series of x,y points and drawing them as a sparkline chart.

How can I download it?

Spark is available for download via Gradle. You can add an implementation statement to your build.gradle file and sync.

implementation 'com.robinhood.spark:spark:1.2.0'

Usage?

To use Spark, add a SparkView to your layout by setting up with reasonable default values out of the box.

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.robinhood.spark.SparkView
        android:id="@+id/sparkview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

Then, give it a SparkAdapter to graph your data. The adapter takes a float array which represents the series of y-axis values.

SparkView sparkView = (SparkView) findViewById(R.id.sparkview);
sparkView.setAdapter(new MyAdapter(data));
...
public class MyAdapter extends SparkAdapter {
    private float[] yData;

    public MyAdapter(float[] yData) {
      this.yData = yData;
    }

    @Override
    public int getCount() {
      return yData.length;
    }

    @Override
    public Object getItem(int index) {
      return yData[index];
    }

    @Override
    public float getY(int index) {
      return yData[index];
    }
}

Additionally, you can show a base line, apply custom themes, animate the changes, and even customize the data boundaries. It is licensed under the Apache License, Version 2.0 which allows you to use, modify, and distribute the software commercially or non-commercially.

This library seems to provide an easy and efficient way to graph your data using sparkline charts, and with its easy-to-use interface, anyone can create a chart in no time. To learn more and download the library, visit this page: https://github.com/robinhood/spark.

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