This example demonstrates how to create an Android Donut Chart in code.

See Documentation on how to use this type here:

The Android Donut Chart Documentation.

The SciPieChartSurface can be used to render either Pie, Donut or Nested Pie charts in Java.

Donut charts can be animated on show, have legends and support selection of segments, as well as showing and hiding of labels. Data is provided by a number of PieSegments, which are stored in a IPieRenderableSeries.

// DonutChartFragment.java

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//
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//
// DonutChartFragment.java is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
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package com.scichart.examples.fragments;

import android.util.TypedValue;

import com.scichart.charting.SizingMode;
import com.scichart.charting.modifiers.PieSegmentSelectionModifier;
import com.scichart.charting.visuals.SciPieChartSurface;
import com.scichart.charting.visuals.legend.SciChartLegend;
import com.scichart.charting.visuals.renderableSeries.IPieRenderableSeries;
import com.scichart.examples.R;
import com.scichart.examples.fragments.base.ExampleBaseFragment;

import java.util.Collections;

import butterknife.BindView;

public class DonutChartFragment extends ExampleBaseFragment {
    @BindView(R.id.pieChart)
    SciPieChartSurface pieChartSurface;

    @BindView(R.id.pieChartLegend)
    SciChartLegend legend;

    @Override
    protected int getLayoutId() {
        return R.layout.example_single_pie_chart_with_legend_fragment;
    }

    @Override
    protected void initExample() {
        final float donutSeriesHeight = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50, getActivity().getResources().getDisplayMetrics());

        final IPieRenderableSeries donutSeries = sciChartBuilder.newDonutSeries().withSegments(
                sciChartBuilder.newPieSegment().withValue(40).withTitle("Green").withRadialGradientColors(0xff84BC3D, 0xff5B8829).build(),
                sciChartBuilder.newPieSegment().withValue(10).withTitle("Red").withRadialGradientColors(0xffe04a2f, 0xffB7161B).build(),
                sciChartBuilder.newPieSegment().withValue(20).withTitle("Blue").withRadialGradientColors(0xff4AB6C1, 0xff2182AD).build(),
                sciChartBuilder.newPieSegment().withValue(15).withTitle("Yellow").withRadialGradientColors(0xffFFFF00, 0xfffed325).build()
        ).withHeightSizingMode(SizingMode.Absolute).withHeight(donutSeriesHeight).build();

        Collections.addAll(pieChartSurface.getRenderableSeries(), donutSeries);
        Collections.addAll(pieChartSurface.getChartModifiers(), sciChartBuilder.newLegendModifier(legend).withSourceSeries(donutSeries).build(), new PieSegmentSelectionModifier());

        donutSeries.animate(800);
    }
}

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