It is a simple chart for background display of your activity or fragment. You can choose colors with gradient to display pn your chart the most customize or choose what kind your chart needs now, simple lines or bezier. Best it usage and good luck ;)

How use

<com.fdev.backgroundchart.GradientChart  
  android:id="@+id/gradientChart"  
  android:layout_width="0dp"  
  android:layout_height="0dp"  
  app:layout_constraintBottom_toBottomOf="parent"  
  app:layout_constraintEnd_toEndOf="parent"  
  app:layout_constraintStart_toStartOf="parent"  
  app:layout_constraintTop_toTopOf="parent"  
  app:plusColorStart="#2196F3"  
  app:plusColorEnd="#90CAF9"  
  app:minusColorStart="#90CAF9"  
  app:minusColorEnd="#90CAF9"  
  app:zoom="10"  
  app:isBezier="true"/>

And for appent your data just write for example

gradientChart.chartValues = arrayOf(  
  10f, 30f, 25f, 32f, 13f, 5f, 18f, 36f, 20f, 30f, 28f, 27f, 29f  
)

Gradle

Step 1. Add the JitPack repository to your build file

Add it in your root build.gradle at the end of repositories:

    allprojects {
        repositories {
            ...
            maven { url 'https://jitpack.io' }
        }
    }

Step 2. Add the dependency

    dependencies {
            implementation 'com.github.JastAir:Android-BackgroundChart:{version}'
    }