How to Create a Pie Chart with Kotlin

scripts>Build.gradle app module and add the below dependencies.

implementation ‘com.github.PhilJay:MPAndroidChart:v3.1.0’// add latest version of MPAndroidChart

<uses-permission android:name="android.permission.INTERNET" />

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentEnd="true"

android:layout_marginTop="60dp"

android:text="Pie chart demo"

android:textSize="18sp"

android:textStyle="bold"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

//Pie Chart display

<com.github.mikephil.charting.charts.PieChart

android:id="@+id/pieChart"

android:layout_width="300dp"

android:layout_height="300dp"

android:layout_centerHorizontal="true"

android:layout_marginTop="52dp"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@+id/textView"

tools:ignore="MissingClass,MissingConstraints" />

<ImageView

android:id="@+id/glideimageloaderr"

android:layout_width="55dp"

android:layout_height="48dp"

android:layout_margin="15dp"

android:src="@drawable/company_logo"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

import android.graphics.Color

import android.graphics.Typeface

import android.os.Bundle

import androidx.activity.enableEdgeToEdge

import androidx.appcompat.app.AppCompatActivity

import androidx.core.view.ViewCompat

import androidx.core.view.WindowInsetsCompat

import com.github.mikephil.charting.animation.Easing

import com.github.mikephil.charting.charts.PieChart

import com.github.mikephil.charting.data.PieData

import com.github.mikephil.charting.data.PieDataSet

import com.github.mikephil.charting.data.PieEntry

import com.github.mikephil.charting.formatter.PercentFormatter

import com.github.mikephil.charting.utils.MPPointF

class MainActivity2: AppCompatActivity() {

lateinit var pieChart: PieChart

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_main)

pieChart = findViewById(R.id.pieChart)

// setting description as enabled and offset for pie chart

pieChart.setUsePercentValues(true)

pieChart.getDescription().setEnabled(false)

pieChart.setExtraOffsets(5f, 10f, 5f, 5f)

// on below line we are setting drag for our pie chart

pieChart.setDragDecelerationFrictionCoef(0.95f)

// on below line we are setting hole

// and hole color for pie chart

pieChart.setDrawHoleEnabled(true)

pieChart.setHoleColor(Color.WHITE)

// on below line we are setting circle color and alpha

pieChart.setTransparentCircleColor(Color.WHITE)

pieChart.setTransparentCircleAlpha(110)

pieChart.setHoleRadius(58f)

pieChart.setTransparentCircleRadius(61f)

// on below line we are setting center text

pieChart.setDrawCenterText(true)

// rotation for our pie chart

pieChart.setRotationAngle(0f)

// enable rotation of the pieChart by touch

pieChart.setRotationEnabled(true)

pieChart.setHighlightPerTapEnabled(true)

// on below line we are setting animation for our pie chart

pieChart.animateY(1400, Easing.EaseInOutQuad)

// on below line we are disabling our legend for pie chart

pieChart.legend.isEnabled = false

pieChart.setEntryLabelColor(Color.WHITE)

pieChart.setEntryLabelTextSize(12f)

// adding data to it to display in pie chart

val entries: ArrayList<PieEntry> = ArrayList()

entries.add(PieEntry(40f))

entries.add(PieEntry(30f))

entries.add(PieEntry(30f))

// on below line we are setting pie data set

val dataSet = PieDataSet(entries, "Mobile OS")

dataSet.setDrawIcons(false)

// on below line we are setting slice for pie

dataSet.sliceSpace = 3f

dataSet.iconsOffset = MPPointF(0f, 40f)

dataSet.selectionShift = 5f

// add a lot of colors to list

val colors: ArrayList<Int> = ArrayList()

colors.add(resources.getColor(R.color.purple_200))

colors.add(resources.getColor(R.color.yellow))

colors.add(resources.getColor(R.color.red))

// on the below line we are setting colors.

dataSet.colors = colors

// on below line we are setting pie data set

val data = PieData(dataSet)

data.setValueFormatter(PercentFormatter())

data.setValueTextSize(15f)

data.setValueTypeface(Typeface.DEFAULT_BOLD)

data.setValueTextColor(Color.WHITE)

pieChart.setData(data)

pieChart.highlightValues(null)

// loading chart

pieChart.invalidate()

}

}